cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Cloud Condensation Nuclei Activity and Droplet Formation of Primary and Secondary Organic Aerosol Mixtures
Creators: name: E. A. Fofie
name: N. M. Donahue
name: A. Asa-Awuku
Publisher: name: Taylor & Francis
Year: 2017
Subjects: subject: Biochemistry
subject: Space Science
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Science Policy
subject: 20199 Astronomical and Space Sciences not elsewhere classified
subject: FOS: Physical sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Computational Biology

description: Understanding the mixing behavior of anthropogenic primary and biogenic secondary organic aerosol (POA and SOA) is important for characterizing their interactions with water vapor. The following work expands upon previous studies and investigates cloud condensation nuclei (CCN) activity and droplet kinetics of α-pinene SOA formed in an environmental chamber and mixed with diesel or motor oil-diesel fuel POA. The changes in the aerosol mixing are similar to previously published work but this study provides new CCN activity and droplet information. The CCN activity of the unmixed aerosol systems are measured separately; κ = 0.15, 0.11, 0.022 for α-pinene SOA, diesel POA and motor oil-diesel fuel POA, respectively. In the α-pinene SOA + diesel POA mixture, the CCN activity, characterized by κ-hygroscopicity, decreases from κ = 0.15 to 0.06 after an initial injection of the POA but increases to κ = 0.12. The increase in CCN activity occurs after particle collision (coagulation and wall-loss) rates dominate aerosol processes in the chamber. The α-pinene SOA + motor oil-fuel POA does not readily mix and the CCN activity of the complex system increases with time (from κ = 0.022 to 0.10). An empirical equation using unit mass resolution (UMR) AMS data of two different ion fragments reasonably predicts CCN activity of the POA and SOA mixtures. CCN measurement may be a promising tool to gain additional insight into the complex mixtures of organic aerosol and subsequent interactions with water vapor.
Discovery, Timing, and Multiwavelength Observations of the Black Widow Millisecond Pulsar PSR J1555-2908
Creators: name: Ray, Paul S.
name: Nieder, Lars
name: Clark, Colin J.
name: Ransom, Scott M.
name: Cromartie, H. Thankful
name: Frail, Dale A.
name: Mooley, Kunal P.
name: Intema, Huib
name: Jagannathan, Preshanth
name: Demorest, Paul
name: Stovall, Kevin
name: Halpern, Jules P.
name: Deneva, Julia
name: Guillot, Sebastien
name: Kerr, Matthew
name: Swihart, Samuel J.
name: Bruel, Philippe
name: Stappers, Ben W.
name: Lyne, Andrew
name: Mickaliger, Mitch
name: Camilo, Fernando
name: Ferrara, Elizabeth C.
name: Wolff, Michael T.
name: Michelson, P. F.
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We report the discovery of PSR J1555-2908, a 1.79 ms radio and gamma-ray pulsar in a 5.6 hr binary system with a minimum companion mass of 0.052 $M_\odot$. This fast and energetic ($\dot E = 3 \times 10^{35}$ erg/s) millisecond pulsar was first detected as a gamma-ray point source in Fermi LAT sky survey observations. Guided by a steep spectrum radio point source in the Fermi error region, we performed a search at 820 MHz with the Green Bank Telescope that first discovered the pulsations. The initial radio pulse timing observations provided enough information to seed a search for gamma-ray pulsations in the LAT data, from which we derive a timing solution valid for the full Fermi mission. In addition to the radio and gamma-ray pulsation discovery and timing, we searched for X-ray pulsations using NICER but no significant pulsations were detected. We also obtained time-series r-band photometry that indicates strong heating of the companion star by the pulsar wind. Material blown off the heated companion eclipses the 820 MHz radio pulse during inferior conjunction of the companion for ~10% of the orbit, which is twice the angle subtended by its Roche lobe in an edge-on system.
description: 15 pages, 6 figures, accepted by ApJ
GeV $γ$-ray Emission of Compact Steep-Spectrum Source 4C +39.23B
Creators: name: Gu, Ying
name: Zhang, Hai-Ming
name: Gan, Ying-Ying
name: Zhang, Jin
name: Sun, Xiao-Na
name: Liang, En-Wei
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Thirteen yr observation data of 4FGL J0824.9+3915 with the Large Area Telescope on board the Fermi Gamma Ray Space Telescope (Fermi/LAT) are analyzed for revisiting whether 4C +39.23B, a compact steep-spectrum (CSS) source closed to a flat-spectrum radio quasar (FSRQ) 4C +39.23A in the $γ$-ray emitting region of 4FGL J0824.9+3915, is a $γ$-ray emitter. We find that the time-integrated $γ$-ray emission of 4FGL J0824.9+3915 is overwhelmingly dominated by 4C +39.23A. It shows significant variability at a 6.7$σ$ confidence level and the average $γ$-ray flux in the 0.1--300 GeV energy band is $(1.60\pm 0.15)\times10^{-8}$ ph cm$^{-2}$ s$^{-1}$ with a power-law photon spectral index of $2.48\pm0.05$. During MJD 57500--58500, 4FGL J0824.9+3915 is in a low state with a steady $γ$-ray flux. Analyzed the Fermi/LAT observation data in this time interval, it is found that the TS values of the $γ$-ray emission from 4C +39.23A and 4C +39.23B are $\sim5$ and $\sim 31$, respectively, indicating that the $γ$-ray emission in this time interval is dominated by the CSS 4C +39.23B. The derived average flux in this time interval for 4C +39.23B is $(9.40\pm4.10)\times 10^{-9}$ ph cm $^{-2}$ s$^{-1}$ with $Γ_γ=2.45\pm0.17$. Attributing the spectral energy distribution (SED) of 4C +39.23B to the radiations from its core and extended region, we show that the SED can be represented with a two-zone leptonic model. Its $γ$-ray emission is contributed by the core region. The derived magnetic field strength and Doppler boosting factor of the core are 0.13 G and 6.5. Comparing 4C +39.23B with other $γ$-emitting CSSs and compact symmetric objects (CSOs) in the $Γ_γ-L_γ$ plane, it resembles CSSs.
description: 12 Pages, 6 Figures, 2 Tables, accepted for publication in ApJ
title: ADCO, Cartulaire général de Cîteaux, dit de Jean de Cirey, (XVe siècle), tome V, Cart. 189 (11 H 74), 316 folios, f.79-03r
Creators: name: de la Côte d'Or, Archives départementales
name: Archives Départementales De La Côte-D'Or
name: Petot, Frédérique
name: Projet CBMA
name: CG21/F.PETOT/2012
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2020
Subjects: subject: Laboratoire de Médiévistique Occidentale de Paris
subject: cartulaire
subject: Corpus Burgundiae Medii Aevi
subject: Chartes de la Bourgogne du Moyen Âge
subject: LaMOP

description: Cartulaire général de Cîteaux, dit de Jean de Cirey, (XVe siècle), tome V, Archives départementales de la Côte-d'Or, Cart. 189 (11 H 74), 316 folios, f. 79-03r, Numérisation en mode image.
description: Relation: http://www.cbma-project.eu/
description: Bibliographic citation: Cartulaire général de Cîteaux, dit de Jean de Cirey, (XVe siècle), tome V, Archives départementales de la Côte-d'Or, Cart. 189 (11 H 74), 316 folios, f. 79-03r, in Projet CBMA - Corpus Burgundiae Medii Aevi [Ressource en ligne], https:// manuscrits.cbma-project.eu/
description: Provenance: https://www.geonames.org/3024876
description: Provenance: http://www.idref.fr/030974844/id
description: Provenance: https://catalogue.bnf.fr/ark:/12148/cb12228351v
description: Provenance: abbaye de Cîteaux
description: Provenance: http://www.wikidata.org/entity/Q843261
title: Cartulaire du comté de Bourgogne - Archives départementales de la Côte-d'Or, B 10440
Creators: name: de la Côte d'Or, Archives départementales
name: Archives Départementales De La Côte-D'Or
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2022
Subjects: subject: LaMOP
subject: Laboratoire de médiévistique occidentale de Paris

description: Cartulaire du comté de Bourgogne Copies de 1444
Archives départementales de la Côte-d'Or, B 10440 (Cartulaire 10)
Document transcrit dans le cadre des ateliers de paléographie du Chancelier Rolin des Archives départements des Côtes d’Or.
description: Source: https://archives.cotedor.fr/v2/site/AD21/web/media/04_apprendre/02_ateliers_chancelier_rolin/paleographie/intermediaires/2015_2016/document_03.pdf
description: Source: https://www.nakala.fr/10.34847/nkl.b65cok2m
Examining Educators’ Attitudes Toward Multiracial Students in Michigan Charter Schools: A Quantitative Survey Design
Creators: name: Turner, Rachel L.
Publisher: name: My University
Year: 2024
Subjects: subject: cultural awareness
subject: educator training
subject: multiracial learners
subject: teacher attitudes
subject: charter school
subject: Educational leadership
subject: Education
subject: Multicultural education

description: Current research provides little insight into educators’ attitudes toward multiracial learners. This lack of insight may impede the unique needs of multiracial learners, universal planning, and professional attitudes of educators. This survey design study addressed that problem by analyzing educators’ attitudes in Michigan charter schools. Rooted in Whiteness theoretical framework, two research questions centered on whether there was a difference among White and non-White educators' attitudes toward multiracial students. Four months of survey data, using the Attitudes toward Multiracial Children Scale (AMCS) distributed randomly across all 380 Michigan charter schools were collected and analyzed using survey design methodology. The results of the study did not align with the literature. The results offer guidance as to how to alter the study as the current literature provided merit for continued study. This study provides promise and contributes to the body of survey design research through the expansion of methodological tools available for educational research.
Food groups and risk of coronary heart disease, stroke and heart failure: A systematic review and dose-response meta-analysis of prospective studies
Creators: name: Bechthold, Angela
name: Boeing, Heiner
name: Schwedhelm, Carolina
name: Hoffmann, Georg
name: Knüppel, Sven
name: Iqbal, Khalid
name: Henauw, Stefaan De
name: Michels, Nathalie
name: Devleesschauwer, Brecht
name: Schlesinger, Sabrina
name: Schwingshackl, Lukas
Publisher: name: Taylor & Francis
Year: 2017
Subjects: subject: Genetics
subject: FOS: Biological sciences
subject: Physiology
subject: Immunology
subject: FOS: Clinical medicine
subject: 69999 Biological Sciences not elsewhere classified
subject: Cancer
subject: Science Policy

description: Background: Despite growing evidence for food-based dietary patterns' potential to reduce cardiovascular disease risk, knowledge about the amounts of food associated with the greatest change in risk of specific cardiovascular outcomes and about the quality of meta-evidence is limited. Therefore, the aim of this meta-analysis was to synthesize the knowledge about the relation between intake of 12 major food groups (whole grains, refined grains, vegetables, fruits, nuts, legumes, eggs, dairy, fish, red meat, processed meat, and sugar-sweetened beverages [SSB]) and the risk of coronary heart disease (CHD), stroke and heart failure (HF). Methods: We conducted a systematic search in PubMed and Embase up to March 2017 for prospective studies. Summary risk ratios (RRs) and 95% confidence intervals (95% CI) were estimated using a random effects model for highest versus lowest intake categories, as well as for linear and non-linear relationships. Results: Overall, 123 reports were included in the meta-analyses. An inverse association was present for whole grains (RRCHD: 0.95 (95% CI: 0.92–0.98), RRHF: 0.96 (0.95–0.97)), vegetables and fruits (RRCHD: 0.97 (0.96–0.99), and 0.94 (0.90–0.97); RRstroke: 0.92 (0.86–0.98), and 0.90 (0.84–0.97)), nuts (RRCHD: 0.67 (0.43–1.05)), and fish consumption (RRCHD: 0.88 (0.79–0.99), RRstroke: 0.86 (0.75–0.99), and RRHF: 0.80 (0.67–0.95)), while a positive association was present for egg (RRHF: 1.16 (1.03–1.31)), red meat (RRCHD: 1.15 (1.08–1.23), RRstroke: 1.12 (1.06–1.17), RRHF: 1.08 (1.02–1.14)), processed meat (RRCHD: 1.27 (1.09–1.49), RRstroke: 1.17 (1.02–1.34), RRHF: 1.12 (1.05–1.19)), and SSB consumption (RRCHD: 1.17 (1.11–1.23), RRstroke: 1.07 (1.02–1.12), RRHF: 1.08 (1.05–1.12)) in the linear dose-response meta-analysis. There were clear indications for non-linear dose-response relationships between whole grains, fruits, nuts, dairy, and red meat and CHD. Conclusion: An optimal intake of whole grains, vegetables, fruits, nuts, legumes, dairy, fish, red and processed meat, eggs and SSB showed an important lower risk of CHD, stroke, and HF.
Exploring societal perceptions of forests, ecosystem benefits, and restoration. A case study in Sweden, Scotland, Germany, Serbia, Croatia, and Spain
Creators: name: Kazungu, Moses
name: Hunziker, Marcel
Publisher: name: Taylor & Francis
Year: 2025
Subjects: subject: Ecology
subject: FOS: Biological sciences
subject: Sociology
subject: FOS: Sociology
subject: Biological Sciences not elsewhere classified
subject: Science Policy

description: Forests provide essential ecological and socio-economic benefits, yet forest restoration efforts often overlook how people perceive and engage with these ecosystems. Understanding public perceptions is crucial for designing effective restoration strategies, particularly in Europe, given its social, and ecological diversity. While previous research has recorded forest and restoration benefits, less is known about how individuals perceive these benefits, engage with forests, and participate in restoration efforts. We conducted structured key informant interviews with twenty individuals from selected regions in Sweden, Scotland, Germany, Serbia/Croatia, and Spain. Thematic analysis revealed two predominant perspectives on forests: one as “encompassing everything” and the other as “unique places.” Furthermore, results indicate that past restoration efforts often prioritised biodiversity conservation and hazard mitigation, while other forest benefits and uses were less integrated into these efforts. These findings highlight the need for inclusive restoration that reflects societal attitudes and aligns with community values.
Analytical expression for the rotational friction coefficient of DLCA aggregates over the entire Knudsen regime
Creators: name: Corson, James
name: Mulholland, George W.
name: Zachariah, Michael R.
Publisher: name: Taylor & Francis
Year: 2017
Subjects: subject: Biophysics
subject: Space Science
subject: Medicine
subject: Cell Biology
subject: Pharmacology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: 20199 Astronomical and Space Sciences not elsewhere classified
subject: FOS: Physical sciences
subject: Cancer
subject: Inorganic Chemistry
subject: 60506 Virology
subject: FOS: Biological sciences

description: We apply a self-consistent field method (Corson et al. 2017c) to calculate the rotational friction coefficient for fractal aerosol particles in the transition flow regime. Our method considers hydrodynamic interactions between spheres in a rotating aggregate due to the linear velocities of the spheres. Results are consistent with electro-optical measurements of soot alignment. Calculated rotational friction coefficients are also in good agreement with continuum and free molecule results in the limits of small (Kn = 0.01) and large (Kn = 100) primary sphere Knudsen numbers. As we previously demonstrated (Corson et al. 2017b) for the translational friction coefficient, the rotational friction coefficient approaches the continuum limit as either the primary sphere size and the number of primary spheres increases. We apply our results to develop an analytical expression Equation (26) for the rotational friction coefficient as a function of the primary sphere size and number of primary spheres. One important finding is that the ratio of the translation to rotational diffusion times is nearly independent of cluster size. We include an extension of previous scaling analysis for aerosol aggregates to include rotational motion. Copyright © 2018 American Association for Aerosol Research
title: ADCO, Boursier de Cîteaux : comptes (1489-1493) (11 H 1166), f. 00218
Creators: name: de la Côte-d'Or, Archives départementales
name: Petot, Frédéric
name: Archives Départementales De La Côte-D'Or
name: Petot, Frédérique
name: Projet CBMA
name: CBMA/CG21/F.PETOT/2019
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2020
Subjects: subject: comptes
subject: LaMOP
subject: Laboratoire de Médiévistique Occidentale de Paris
subject: Corpus Burgundiae Medii Aevi
subject: Chartes de la Bourgogne du Moyen Âge

description: Boursier de Cîteaux : comptes (1489-1493), Archives départementales de la Côte-d'Or, (11 H 1166). Numérisation en mode image.
description: Relation: http://www.cbma-project.eu/
description: Bibliographic citation: Boursier de Cîteaux : comptes (1489-1493), Archives départementales de la Côte-d'Or, (11 H 1166), f. 00218, in Projet CBMA - Corpus Burgundiae Medii Aevi \[Ressource en ligne\], https:// manuscrits.cbma-project.eu/
description: Provenance: abbaye de Cîteaux
description: Provenance: http://www.wikidata.org/entity/Q843261
description: Provenance: https://www.geonames.org/3024876
description: Provenance: http://www.idref.fr/030974844/id
description: Provenance: https://catalogue.bnf.fr/ark:/12148/cb12228351v
Dust Mass Associated with the Supernova Remnant IC 443 when Emission Meets Extinction
Creators: name: Li, Jun
name: Jiang, Biwei
name: Zhao, He
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The dust mass of the well-known supernova remnant (SNR) IC 443 is estimated from both the infrared emission and the visual extinction. With photometry to the images taken by \emph{Spitzer}, \emph{WISE}, \emph{IRAS}, \emph{AKARI} and \emph{Planck}, the spectral energy distribution (SED) of the dust is obtained after subtracting the synchrotron radiation and considering the spectral line emission. The dust mass is derived from fitting the SED by a two-component model, which results in a warm component of the temperature of $\sim$ 53 K and the mass of 0.1 $M_\odot$, and a cold component of the temperature of $\sim 17$ K and the mass of 46 $M_\odot$. On the other hand, the dust mass is derived to be $\sim$ 66 $M_\odot$ from the visual extinction of IC 443 which is identified from the 3D Bayestar extinction map and its coincidence with the infrared emission morphology. Roughly the dust mass derived from the infrared emission and the extinction agree mutually. However, the dust mass derived from the infrared emission can be adjusted to be more consistent with that from the extinction by using different dust opacity property or considering optically thick radiation. In addition, the distribution of dust temperature and mass is analyzed by fitting the SED pixel by pixel.
description: 21 pages, 9 figures, accepted for publication in ApJ
Congenital Prosopagnosia without Object Agnosia? A Literature Review
Creators: name: Geskin, Jacob
name: Behrmann, Marlene
Publisher: name: Carnegie Mellon University
Year: 2017
Subjects: Neuroscience and Physiological Psychology

description: One of the longstanding controversies in the neuropsychology literature concerns the functional organization of high-level vision, and the extent to whichthe recognition of different classes of visual stimuli engage a single or multiple, independent underlying mechanisms. We explore this issue in the contextof congenital prosopagnosia (CP), a neurodevelopmental disorder in which individuals, without a history of brain damage and with normal sensory andcognitive abilities, are impaired at face recognition. Whereas many researchers have asserted that individuals with CP have face-selective deficits, othershave claimed that the deficit extends to the recognition of stimuli from other visual classes as well. This paper reviews 119 published reports of CP (atotal of 716 cases) from 1976 to 2016, and examines the evidence for associations or dissociations of face and object recognition behavior. The resultsrevealed that, of the 238 CP cases with data permitting a satisfactory evaluation of behavior, 80.3% had an associated face and object recognition deficitwhereas 19.7% evinced a dissociation between face and object recognition. We evaluate the strength of the evidence and correlate the face and objectrecognition behavior where possible. We discuss the frequent pattern of an association between face and object recognition deficits along with the lessfrequent case of dissociation, consider the implications for theories of functional organization of the visual system, and make suggestions for furtheradjudication of the relationship between face and object recognition in prosopagnosia and object agnosia.
X-ray emission from candidate stellar merger remnant TYC 2597-735-1 and its Blue Ring Nebula
Creators: name: Günther, Hans Moritz
name: Hoadley, Keri
name: Günther, Maximilian N.
name: Metzger, Brian D.
name: Schneider, P. C.
name: Shen, Ken J.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Tight binary or multiple star systems can interact through mass transfer and follow vastly different evolutionary pathways than single stars. The star TYC 2597-735-1 is a candidate for a recent stellar merger remnant resulting from a coalescence of a low-mass companion with a primary star a few thousand years ago. This violent event is evident in a conical outflow ("Blue Ring Nebula") emitting in UV light and surrounded by leading shock filaments observed in H$α$ and UV emission. From Chandra data, we report the detection of X-ray emission from the location of TYC 2597-735-1 with a luminosity $\log(L_\mathrm{X}/L_\mathrm{bol})=-5.5$. Together with a previously reported period around 14~days, this indicates ongoing stellar activity and the presence of strong magnetic fields on TYC 2597-735-1. Supported by stellar evolution models of merger remnants, we interpret the inferred stellar magnetic field as dynamo action associated with a newly formed convection zone in the atmosphere of TYC 2597-735-1, though internal shocks at the base of an accretion-powered jet cannot be ruled out. We speculate that this object will evolve into an FK Com type source, i.e. a class of rapidly spinning magnetically active stars for which a merger origin has been proposed but for which no relic accretion or large-scale nebula remains visible. We also detect likely X-ray emission from two small regions close to the outer shock fronts in the Blue Ring Nebula, which may arise from either inhomogenities in the circumstellar medium or in the mass and velocity distribution in the merger-driven outflow.
description: accepted by AJ, 15 pages, 5 figures
The discovery of a radio galaxy of at least 5 Mpc
Creators: name: Oei, Martijn S. S. L.
name: van Weeren, Reinout J.
name: Hardcastle, Martin J.
name: Botteon, Andrea
name: Shimwell, Tim W.
name: Dabhade, Pratik
name: Gast, Aivin R. D. J. G. I. B.
name: Röttgering, Huub J. A.
name: Brüggen, Marcus
name: Tasse, Cyril
name: Williams, Wendy L.
name: Shulevski, Aleksandar
Publisher: name: arXiv
Year: 2022
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We discover what is in projection the largest known structure of galactic origin: a giant radio galaxy with a projected proper length of $4.99 \pm 0.04\ \mathrm{Mpc}$. The source, named Alcyoneus, was first identified in low-resolution LOFAR Two-metre Sky Survey images from which angularly compact sources had been removed. Being an extreme example in its class, Alcyoneus could shed light on the main mechanisms that drive radio galaxy growth. We find that - beyond geometry - Alcyoneus and its host galaxy appear suspiciously ordinary: the total low-frequency luminosity density, stellar mass and supermassive black hole mass are all lower than, though similar to, those of the medial giant radio galaxy (percentiles $45 \pm 3\%$, $25 \pm 9 \%$ and $23 \pm 11 \%$, respectively). The source resides in a filament of the Cosmic Web, with which it might have significant thermodynamic interaction. At $5 \cdot 10^{-16}\ \mathrm{Pa}$, the pressures in the lobes are the lowest hitherto found, and Alcyoneus therefore represents one of the most promising radio galaxies yet to probe the warm-hot intergalactic medium.
description: 18 pages, 14 figures, 3 tables, accepted for publication in Astronomy & Astrophysics
Discovery of hot subdwarfs with extremely high carbon and oxygen abundances
Creators: name: Werner, Klaus
name: Reindl, Nicole
name: Geier, Stephan
name: Pritzkuleit, Max
Publisher: name: arXiv
Year: 2022
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Helium rich subdwarf O stars (sdOs) are hot compact stars in a pre-white dwarf evolutionary state. Most of them have effective temperatures and surface gravities in the range Teff = 40,000-50,000 K and log g = 5.5-6.0. Their atmospheres are helium dominated. If present at all, C, N, and O are trace elements. The abundance patterns are explained in terms of nucleosynthesis during single star evolution (late helium core flash) or a binary He-core white dwarf merger. Here we announce the discovery of two hot hydrogen-deficient sdOs (PG1654+322 and PG1528+025) that exhibit unusually strong carbon and oxygen lines. A non-LTE model atmosphere analysis of spectra obtained with the Large Binocular Telescope and by the LAMOST survey reveals astonishingly high abundances of C (~20%) and O (~20%) and that the two stars are located close to the helium main sequence. Both establish a new spectroscopic class of hot H-deficient subdwarfs (CO-sdO) and can be identified as the remnants of a He-core white dwarf that accreted matter of a merging low-mass CO-core white dwarf. We conclude that the CO-sdOs represent an alternative evolutionary channel creating PG1159 stars besides the evolution of single stars that experience a late helium-shell flash.
description: Accepted for publication in MNRAS Letters. This Letter is accompanied by a paper entitled "An evolutionary channel for CO-rich and pulsating He-rich subdwarfs" by Miller Bertolami et al., appearing in the same issue of MNRAS Letters and on arxiv
Model-independent reconstruction of the cosmological scale factor as a function of lookback time
Creators: name: Zhang, Jian-Chen
name: Zheng, Jing
name: Zhang, Tong-Jie
Publisher: name: arXiv
Year: 2022
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We present a model-independent method of reconstructing scale factor against lookback time from the Observational Hubble parameter Data (OHD). The reconstruction method is independent of dynamical models and is only based on the Friedmann-Robertson-Walker metric. We also calculate the propagation of error in the reconstruction process. The reconstruction data errors mainly come from trapezoidal rule approximation and the uncertainty from OHD. Furthermore, the model discrimination ability of original OHD and reconstructed a-t data is discussed under a dimensionless standard method. a-t data can present the differences between cosmology models more clearly than H-z data by comparing their coefficients of variations. Finally, we add fifty simulated H(z) data to estimate the influence of future observation. More Hubble measurements in the future will help constrain cosmological parameters more accurately.
description: 9 pages, 8 figures, 3 tables. Accepted for publication in ApJ
Tree of PIDful Life
Creators: name: Paglione, Laura
name: Chodacki, John
Publisher: name: Zenodo
Year: 2020
Subjects: PID
metadata
persistent identifier

description: PIDs and their related Metadata can enable so much - even more than each of us can imagine! Let’s watch our future vision grow and flourish as we add our visions of a world rich with PIDs and Metadata to our Tree of PID-ful Life. Grab a leaf sticky note (or 3 or 10!) and write your vision of a world where PIDs run free, and Metadata is plentiful.
A new estimation of astrometric exoplanet detection limits in the habitable zone around nearby stars
Creators: name: Meunier, Nadège
name: Lagrange, Anne-Marie
Publisher: name: arXiv
Year: 2022
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Astrometry is less sensitive to stellar activity than the radial velocity technique when attempting to detect Earth mass planets in the habitable zone of solar-type stars. This is due to a smaller number of physical processes affecting the signal, and a larger ratio of the amplitude of the planetary signal to the stellar signal. A few high-precision astrometric missions have therefore been proposed over the past two decades. We aim to re-estimate the detection limits in astrometry for the nearby stars which are the main targets proposed for the THEIA astrometric mission, the most elaborate mission to search for planets, and to characterise its performance. This analysis is performed for the 55 F-G-K stars in the THEIA sample. We used realistic simulations of stellar activity and selected those that correspond best to each star in terms of spectral type and average activity level. Then, we performed blind tests to estimate the performance. We find worse detection limits compared to those previously obtained for that sample based on a careful analysis of the false positive rate, with values in the Earth-mass regime for most stars of the sample. The difference is attributed to the fact that we analysed full time series, adapted to each star in the sample, rather than using the expected solar jitter only. Although these detection limits have a relatively low signal-to-noise ratio, the fitted parameters have small uncertainties. We confirm the low impact of stellar activity on exoplanet detectability for solar-type stars, although it plays a significant role for the closest stars such as alpha Cen A and B. However, for the few stars in the sample with a habitable zone corresponding to long periods, namely subgiants, the THEIA observational strategy is not well adapted and should prevent the detection of planets in the habitable zone, unless a longer mission can be proposed.
description: Accepted in Astronomy and Astrophysics
Coupling matter and curvature in Weyl geometry: conformally invariant $f\left(R,L_m\right)$ gravity
Creators: name: Harko, Tiberiu
name: Shahidi, Shahab
Publisher: name: arXiv
Year: 2022
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We investigate the coupling of matter to geometry in conformal quadratic Weyl gravity, by assuming a coupling term of the form $L_m\tilde{R}^2$, where $L_m$ is the ordinary matter Lagrangian, and $\tilde{R}$ is the Weyl scalar. The coupling explicitly satisfies the conformal invariance of the theory. By expressing $\tilde{R}^2$ with the help of an auxiliary scalar field and of the Weyl scalar, the gravitational action can be linearized, leading in the Riemann space to a conformally invariant $f\left(R,L_m\right)$ type theory, with the matter Lagrangian nonminimally coupled to the Ricci scalar. We obtain the gravitational field equations of the theory, as well as the energy-momentum balance equations. The divergence of the matter energy-momentum tensor does not vanish, and an extra force, depending on the Weyl vector, and matter Lagrangian is generated. The thermodynamic interpretation of the theory is also discussed. The generalized Poisson equation is derived, and the Newtonian limit of the equations of motion is considered in detail. The perihelion precession of a planet in the presence of an extra force is also considered, and constraints on the magnitude of the Weyl vector in the Solar System are obtained from the observational data of Mercury. The cosmological implications of the theory are also considered for the case of a flat, homogeneous and isotropic Friedmann-Lemaitre-Robertson-Walker geometry, and it is shown that the model can give a good description of the observational data for the Hubble function up to a redshift of the order of $z\approx 3$.
description: 22 pages, 2 figures, accepted for publication in EPJC
title: ADCO, Cart. 186 (11 H 71), f. 0156v
Creators: name: de la Côte d'Or, Archives départementales
name: Petot, Frédéric
name: Archives Départementales De La Côte-D'Or
name: Petot, Frédérique
name: Projet CBMA
name: CBMA/CG21/F.PETOT/2012
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2020
Subjects: subject: LaMOP
subject: Laboratoire de Médiévistique Occidentale de Paris
subject: Corpus Burgundiae Medii Aevi
subject: Chartes de la Bourgogne du Moyen Âge
subject: cartulaire

description: Cartulaire général de Cîteaux, dit de Jean de Cirey, t. II (XVe siècle), tome II, Archives départementales de la Côte-d'Or, C
art. 186 (11 H 71). Numérisation en mode image.
description: Relation: http://www.cbma-project.eu/
description: Bibliographic citation: Cartulaire général de Cîteaux, dit de Jean de Cirey, t. II (XVe siècle), tome II, Archives départementales de la
 Côte-d'Or, Cart. 186 (11 H 71), f. 0156v, in Projet CBMA - Corpus Burgundiae Medii Aevi [Ressource en ligne], https://manuscrits.cbma-
project.eu/
description: Provenance: abbaye de Cîteaux
description: Provenance: http://www.wikidata.org/entity/Q843261
description: Provenance: https://www.geonames.org/3024876
description: Provenance: http://www.idref.fr/030974844/id
description: Provenance: https://catalogue.bnf.fr/ark:/12148/cb12228351v
Characterization of a cytoplasmic glucosyltransferase that extends the core trisaccharide of the Toxoplasma Skp1 E3 ubiquitin ligase subunit
Creators: name: Rahman, Kazi
Publisher: name: figshare
Year: 2017
Subjects: subject: 60502 Infectious Agents
subject: FOS: Biological sciences
subject: 60503 Microbial Genetics
subject: 110309 Infectious Diseases
subject: FOS: Health sciences
subject: Microbiology
subject: Pathology
subject: Cell Biology
subject: Genetics
subject: Molecular Biology
subject: 60102 Bioinformatics
subject: FOS: Computer and information sciences
subject: Evolutionary Biology
subject: 60199 Biochemistry and Cell Biology not elsewhere classified
subject: Parasitology

description: Skp1 is a subunit of the SCF (Skp1/Cullin-1/F-box protein) class of E3 ubiquitin ligases that are important for eukaryotic protein degradation. Unlike its animal counterparts, Skp1 from Toxoplasma gondii is hydroxylated by an O2-dependent prolyl-4-hydroxylase (PhyA), and the resulting hydroxyproline can subsequently be modified by a five-sugar chain. A similar modification is found in the social amoeba Dictyostelium, where it regulates SCF assembly and O2-dependent development. Homologous glycosyltransferases assemble a similar core trisaccharide in both organisms, and a bifunctional α-galactosyltransferase from CAZy family GT77 mediates addition of the final two sugars in Dictyostelium, generating Galα1,3Galα1,3Fucα1,2Galβ1,3GlcNAcα1-. Here, we found that Toxoplasma utilizes a cytoplasmic glycosyltransferase from an ancient clade of CAZy family GT32 to catalyze transfer of the fourth sugar. Catalytically active Glt1 was required for addition of the terminal disaccharide in cells, and cytosolic extracts catalyzed transfer of [3H]glucose from UDP-[3H]glucose to the trisaccharide form of Skp1 in a glt1-dependent fashion. Recombinant Glt1 catalyzed the same reaction, confirming that it directly mediates Skp1 glucosylation, and NMR demonstrated formation of a Glcα1,3Fuc linkage. Recombinant Glt1 strongly preferred the full core trisaccharide attached to Skp1, and labeled only Skp1 in glt1Δ extracts, suggesting specificity for Skp1. glt1-knockout parasites exhibited a growth defect not rescued by catalytically inactive Glt1, indicating that the glycan acts in concert with the first enzyme in the pathway, PhyA, in cells. A genomic bioinformatics survey suggested that Glt1 belongs to the ancestral Skp1 glycosylation pathway in protists and evolved separately from related Golgi-resident GT32 glycosyltransferases.
Equivalent widths of Lyman $α$ emitters in MUSE-Wide and MUSE-Deep
Creators: name: Kerutt, J.
name: Wisotzki, L.
name: Verhamme, A.
name: Schmidt, K. B.
name: Leclercq, F.
name: Herenz, E. C.
name: Urrutia, T.
name: Garel, T.
name: Hashimoto, T.
name: Maseda, M.
name: Matthee, J.
name: Kusakabe, H.
name: Schaye, J.
name: Richard, J.
name: Guiderdoni, B.
name: Mauerhofer, V.
name: Nanayakkara, T.
name: Vitte, E.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The aim of this study is to better understand the connection between the Lyman $α$ rest-frame equivalent width (EW$_0$) and spectral properties as well as ultraviolet (UV) continuum morphology by obtaining reliable EW$_0$ histograms for a statistical sample of galaxies and by assessing the fraction of objects with large equivalent widths. We used integral field spectroscopy from MUSE combined with broad-band data from the Hubble Space Telescope (HST) to measure EW$_0$. We analysed the emission lines of $1920$ Lyman $α$ emitters (LAEs) detected in the full MUSE-Wide (one hour exposure time) and MUSE-Deep (ten hour exposure time) surveys and found UV continuum counterparts in archival HST data. We fitted the UV continuum photometric images using the Galfit software to gain morphological information on the rest-UV emission and fitted the spectra obtained from MUSE to determine the double peak fraction, asymmetry, full-width at half maximum, and flux of the Lyman $α$ line. The two surveys show different histograms of Lyman $α$ EW$_0$. In MUSE-Wide, $20\%$ of objects have EW$_0 > 240$ Å, while this fraction is only $11\%$ in MUSE-Deep and $\approx 16\%$ for the full sample. This includes objects without HST continuum counterparts (one-third of our sample), for which we give lower limits for EW$_0$. The object with the highest securely measured EW$_0$ has EW$_0=589 \pm 193$ Å (the highest lower limit being EW$_0=4464$ Å). We investigate the connection between EW$_0$ and Lyman $α$ spectral or UV continuum morphological properties. The survey depth has to be taken into account when studying EW$_0$ distributions. We find that in general, high EW$_0$ objects can have a wide range of spectral and UV morphological properties, which might reflect that the underlying causes for high EW$_0$ values are equally varied. (abridged)
description: 28 pages, 21 + 1 figures, 7 + 1 tables, accepted for publication in A&A
Circumbinary disk evolution in the presence of an outer companion star
Creators: name: Martin, Rebecca G.
name: Lepp, Stephen
name: Lubow, Stephen H.
name: Kenworthy, Matthew A.
name: Kennedy, Grant M.
name: Vallet, David
Publisher: name: arXiv
Year: 2022
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We consider a hierarchical triple system consisting of an inner eccentric binary with an outer companion. A highly misaligned circumbinary disk around the inner binary is subject to two competing effects: (i) nodal precession about the inner binary eccentricity vector that leads to an increase in misalignment (polar alignment) and (ii) Kozai-Lidov (KL) oscillations of eccentricity and inclination driven by the outer companion that leads to a reduction in the misalignment. The outcome depends upon the ratio of the timescales of these effects. If the inner binary torque dominates, then the disk aligns to a polar orientation. If the outer companion torque dominates, then the disk undergoes KL oscillations. In that case, the highly eccentric and misaligned disk is disrupted and accreted by the inner binary, while some mass is transferred to the outer companion. However, when the torques are similar, the outer parts of the circumbinary disk can undergo large eccentricity oscillations while the inclination remains close to the polar orientation. The range of initial disk inclinations that evolve to a polar orientation is smaller in the presence of the outer companion. Disk breaking is also more likely, at least temporarily, during the polar alignment process. The stellar orbits in HD 98800 have parameters such that polar alignment of the circumbinary disk is expected. In the absence of the gas, solid particles are unstable at much smaller radii than the gas disk inner tidal truncation radius because KL driven eccentricity leads to close encounters with the binary.
description: Accepted for publication in ApJL
The Habitable Zones of Rapidly Rotating Main Sequence A/F Stars
Creators: name: Ahlers, John P.
name: Fromont, Emeline F.
name: Kopparappu, Ravi
name: Cauley, P. Wilson
name: Haqq-Misra, Jacob
Publisher: name: arXiv
Year: 2022
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We investigate how rapid stellar rotation commonly seen in A/F stars can influence planet habitability. Specifically, we model how rapid rotation influences a planet's irradiation and determine the location of the habitable zone for stars in the mass range $1.3M_\odot\leq M_\star\leq 2.2M_\odot$. Rapid stellar rotation can dramatically change a star's luminosity and spectral energy distribution and, therefore, can impact the habitability of any surrounding planets. Stars of mass $M_\star\gtrsim1.3M_\odot$ commonly rotate near their breakup speeds, which causes two effects relevant to planet habitability. First, these stars flatten into oblate spheroids with shorter polar radii and elongated equatorial radii. Second, rapid rotation induces a pole-to-equator temperature gradient on the surface of these stars. Using a 1D climate model, we calculate the inner and outer edges of the habitable zone of well-known rapid rotators and average theoretical stars in our stellar mass range. We find that, in general, rapid rotation causes the habitable zone to reside closer in than for a non-rotating equivalent star. We also find that gravity darkening dramatically reduces stellar UV emission, which combats the common assumption that high-mass stars emit too much UV light for habitable worlds. Overall, we determine that rapid stellar rotation has important consequences for the overall habitability of a system and must be accounted for both when modeling exoplanet environments and in observation of planets around high-mass stars.
description: Accepted for publication in ApJ
The X-ray spectral-timing contribution of the stellar wind in the hard state of Cyg X-1
Creators: name: Lai, E. V.
name: De Marco, B.
name: Zdziarski, A. A.
name: Belloni, T. M.
name: Mondal, S.
name: Uttley, P.
name: Grinberg, V.
name: Wilms, J.
name: Różańska, A.
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: The clumpy stellar wind from the companion star in high mass X-ray binaries causes variable, partial absorption of the emission from the X-ray source. We studied XMM-Newton observations from the 7.22 d-long "Cyg X-1 Hard state Observations of a Complete Binary Orbit in X-rays" (CHOCBOX) monitoring campaign, in order to constrain the effects of the stellar wind on the short-timescale X-ray spectral-timing properties of the source. We find these properties to change significantly in the presence of the wind. In particular, the longest sampled timescales (corresponding to temporal frequencies of $ν\sim$ 0.1-1 Hz) reveal an enhancement of the fractional variability power, while on the shortest sampled timescales ($ν\sim$ 1-10 Hz) the variability is suppressed. In addition, we observe a reduction (by up to a factor of $\sim$ 1.8) of the otherwise high coherence between soft and hard band light curves, as well as of the amplitude of the hard X-ray lags intrinsic to the X-ray continuum. The observed increase of low frequency variability power can be explained in terms of variations of the wind column density as a consequence of motions of the intervening clumps. In this scenario (and assuming a terminal velocity of $v_{\infty}=2400\ {\rm km\ s^{-1}}$), we obtain an estimate of $l \sim$ 0.5-1.5 $\times 10^{-4} R_{\ast}$ for the average radial size of a clump. On the other hand, we suggest the behaviour at high frequencies to be due to scattering in an optically thicker medium, possibly formed by collision of the stellar wind with the edge of the disc.
description: 16 pages, 13 figures
Mass Segregation in the Hyades Cluster
Creators: name: Evans, N. Wyn
name: Oh, Semyeong
Publisher: name: arXiv
Year: 2022
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Using the Gaia colour-magnitude diagram, we assign masses to a catalogue of 979 confirmed members of the Hyades cluster and tails. By fitting the cumulative mass profile, stars within the tidal radius have a Plummer-like profile with half-mass radius $r_{\rm h}$ of 5.75 pc. The tails are extended with $r_{\rm h} = 69.35$ pc and fall off more slowly than Plummer with density proportional to distance$^{-1.36}$. The cluster stars are separated into two groups at BP-RP $=2$ or $0.56 M_\odot$ to give a high mass (${\bar M} = 0.95 M_\odot$) and a low mass (${\bar M} = 0.32 M_\odot$) population. We show that: (i) the high mass population has a half-mass radius $r_{\rm h}$ of 4.88 pc, whilst the low mass population has $r_{\rm h} = 8.10$ pc; (ii) despite the differences in spatial extent, the kinematics and binarity properties of the high and low mass populations are similar. They have isotropic velocity ellipsoids with mean 1d velocity dispersions $σ$ of 0.427 and 0.415 km s$^{-1}$ respectively. The dynamical state of the Hyades is far from energy equipartition ($σ\propto {\bar M}^{-1/2}$). We identify a new mass segregation instability for clusters with escape speed $V$. Populations with $V/σ\lesssim 2\sqrt{2}$ can never attain thermal equilibrium and equipartition. This regime encompasses many Galactic open and globular clusters. For the Hyades, there must be an outward energy flux of at least $9.5 \times 10^{-4} M_\odot\,{\rm km^2\, s^{-2} Myr^{-1}}$ to maintain its current configuration. The present mass loss of $0.26 M_\odot {\rm Myr}^{-1}$ due to tidal stripping by itself implies a substantial energy flow beyond the required magnitude.
description: MNRAS, submitted
MyGene2 automated match report: TBCK
Creators: name: Team, The MyGene2
Publisher: name: figshare
Year: 2017
Subjects: subject: 110311 Medical Genetics (excl. Cancer Genetics)
subject: FOS: Basic medicine

description: MyGene2.org is free, public, searchable & browsable website. Families with rare genetic conditions, clinicians, and researchers families who are interested in sharing health and genetic information can create MyGene2 profiles and use these to connect with other families, clinicians, and researchers who may have or be studying the same condition. If multiple MyGene2 profiles potentially match on a shared gene of interest, MyGene2 automatically generates a match report summarizing the information in these profiles. This automated match report is shared publicly to help facilitate further research and/or connections between the submitters of the MyGene2 profiles and other interested parties. This is an automated match report for TBCK.