bluuebunny/crossref_metadata_2025_split huggingface dataset:
ALMA Images of the Host Cloud of the Intermediate-mass Black Hole Candidate CO−0.40–0.22*: No Evidence for Cloud–Black Hole Interaction, but Evidence for a Cloud–Cloud Collision
Authors: Tanaka Kunihiko 
Published: May 2018

Abstract
This paper reports a reanalysis of archival ALMA data of the high velocity(-width) compact cloud CO−0.40–0.22, which has recently been hypothesized to host an intermediate-mass black hole (IMBH). If beam-smearing effects, difference in beam sizes among frequency bands, and Doppler shift due to the motion of the Earth are considered accurately, none of the features reported as evidence for an IMBH in previous studies are confirmed in the reanalyzed ALMA images. Instead, through analysis of the position–velocity structure of the HCN J = 3–2 data cube, we have found kinematics typical of a cloud–cloud collision (CCC), namely, two distinct velocity components bridged by broad emission features with elevated temperatures and/or densities. One velocity component has a straight filamentary shape with approximately constant centroid velocities along its length but with a steep, V-shaped velocity gradient across its width. This contradicts the IMBH scenario but is consistent with a collision between two dissimilar-sized clouds. From a non-LTE analysis of the multitransition methanol lines, the volume density of the post-shock gas has been measured to be ≳106 cm−3, indicating that the CCC shock can compress gas in a short timescale to densities typical of star-forming regions. Evidence for star formation has not been found, possibly because the cloud is in an early phase of CCC-triggered star formation or because the collision is nonproductive.
SILVERRUSH. V. Census of Lyα, [O iii] λ5007, Hα, and [C ii] 158 μm Line Emission with ∼1000 LAEs at z = 4.9–7.0 Revealed with Subaru/HSC
Authors: Harikane Yuichi , Ouchi Masami , Shibuya Takatoshi , Kojima Takashi , Zhang Haibin , Itoh Ryohei , Ono Yoshiaki , Higuchi Ryo , Inoue Akio K. , Chevallard Jacopo , Capak Peter L. , Nagao Tohru , Onodera Masato , Faisst Andreas L. , Martin Crystal L. , Rauch Michael , Bruzual Gustavo A. , Charlot Stephane , Davidzon Iary , Fujimoto Seiji , Hilmi Miftahul , Ilbert Olivier , Lee Chien-Hsiu , Matsuoka Yoshiki , Silverman John D. , Toft Sune 
Published: May 2018

Abstract
We investigate Lyα, [O iii] λ5007, Hα, and [C ii] 158 μm emission from 1124 galaxies at z = 4.9–7.0. Our sample is composed of 1092 Lyα emitters (LAEs) at z = 4.9, 5.7, 6.6, and 7.0 identified by Subaru/Hyper-Suprime-Cam (HSC) narrowband surveys covered by Spitzer Large Area Survey with Hyper-Suprime-Cam (SPLASH) and 34 galaxies at z = 5.148–7.508 with deep ALMA [C ii] 158 μm data in the literature. Fluxes of strong rest-frame optical lines of [O iii] and Hα (Hβ) are constrained by significant excesses found in the SPLASH 3.6 and 4.5 μm photometry. At z = 4.9, we find that the rest-frame Hα equivalent width and the Lyα escape fraction f
Lyα
positively correlate with the rest-frame Lyα equivalent width

. The

correlation is similarly found at z ∼ 0–2, suggesting no evolution of the correlation over z ≃ 0–5. The typical ionizing photon production efficiency of LAEs is log(ξ
ion/[Hz erg−1]) ≃ 25.5, significantly (60%–100%) higher than those of LBGs at a given UV magnitude. At z = 5.7–7.0, there exists an interesting turnover trend that the [O iii]/Hα flux ratio increases in

and then decreases out to

. We also identify an anticorrelation between a ratio of [C ii] luminosity to star formation rate (L
[C ii]/SFR) and

at the >99% confidence level.. We carefully investigate physical origins of the correlations with stellar-synthesis and photoionization models and find that a simple anticorrelation between

and metallicity explains self-consistently all of the correlations of Lyα, Hα, [O iii]/Hα, and [C ii] identified in our study, indicating detections of metal-poor (∼0.03 Z
⊙) galaxies with

.
Marginal Stability of Sweet–Parker Type Current Sheets at Low Lundquist Numbers
Authors: Shi 时 Chen 辰 , Velli Marco , Tenerani Anna 
Published: May 2018

Abstract
Magnetohydrodynamic simulations have shown that a nonunique critical Lundquist number S

c
exists, hovering around S

c
∼ 104, above which threshold Sweet–Parker type stationary reconnecting configurations become unstable to a fast tearing mode dominated by plasmoid generation. It is known that the flow along the sheet plays a stabilizing role, though a satisfactory explanation of the nonuniversality and variable critical Lundquist numbers observed is still lacking. Here we discuss this question using 2D linear MHD simulations and linear stability analyses of Sweet–Parker type current sheets in the presence of background stationary inflows and outflows at low Lundquist numbers (S ≤ 104). Simulations show that the inhomogeneous outflow stabilizes the current sheet by stretching the growing magnetic islands and at the same time evacuating the magnetic islands out of the current sheet. This limits the time during which fluctuations that begin at any given wavelength can remain unstable, rendering the instability nonexponential. We find that the linear theory based on the expanding-wavelength assumption works well for S larger than ∼1000. However, we also find that the inflow and location of the initial perturbation also affect the stability threshold.
OGLE-2017-BLG-0329L: A Microlensing Binary Characterized with Dramatically Enhanced Precision Using Data from Space-based Observations
Authors: Han C. , Novati S. Calchi , Udalski A. , Lee C.-U. , Gould A. , Bozza V. , Mróz P. , Pietrukowicz P. , Skowron J. , Szymański M. K. , Poleski R. , Soszyński I. , Kozłowski S. , Ulaczyk K. , Pawlak M. , Rybicki K. , Iwanek P. ,   (The OGLE Collaboration), Albrow M. D. , Chung S.-J. , Hwang K.-H. , Jung Y. K. , Ryu Y.-H. , Shin I.-G. , Shvartzvald Y. , Yee J. C. , Zang W. , Zhu W. , Cha S.-M. , Kim D.-J. , Kim H.-W. , Kim S.-L. , Lee D.-J. , Lee Y. , Park B.-G. , Pogge R. W. , Kim W.-T. ,   (The KMTNet Collaboration), Beichman C. , Bryden G. , Carey S. , Gaudi B. S. , Henderson C. B. ,   (The Spitzer Team), Dominik M. , Helling C. , Hundertmark M. , Jørgensen U. G. , Longa-Peña P. , Lowry S. , Sajadian S. , Burgdorf M. J. , Campbell-White J. , Ciceri S. , Evans D. F. , Haikala L. K. , Hinse T. C. , Rahvar S. , Rabus M. , Snodgrass C. ,   (The MiNDSTEp Collaboration)
Published: May 2018

Abstract
Mass measurements of gravitational microlenses require one to determine the microlens parallax π
E, but precise π
E measurement, in many cases, is hampered due to the subtlety of the microlens-parallax signal combined with the difficulty of distinguishing the signal from those induced by other higher-order effects. In this work, we present the analysis of the binary-lens event OGLE-2017-BLG-0329, for which π
E is measured with a dramatically improved precision using additional data from space-based Spitzer observations. We find that while the parallax model based on the ground-based data cannot be distinguished from a zero-π
E model at the 2σ level, the addition of the Spitzer data enables us to identify two classes of solutions, each composed of a pair of solutions according to the well-known ecliptic degeneracy. It is found that the space-based data reduce the measurement uncertainties of the north and east components of the microlens-parallax vector

by factors ∼18 and ∼4, respectively. With the measured microlens parallax combined with the angular Einstein radius measured from the resolved caustic crossings, we find that the lens is composed of a binary with component masses of either (M
1, M
2) ∼ (1.1, 0.8) M
⊙ or ∼(0.4, 0.3) M
⊙ according to the two solution classes. The first solution is significantly favored but the second cannot be securely ruled out based on the microlensing data alone. However, the degeneracy can be resolved from adaptive optics observations taken ∼10 years after the event.
New High-z BL Lacs Using the Photometric Method with Swift and SARA
Authors: Kaur A. , Rau A. , Ajello M. , Domínguez A. , Paliya V. S. , Greiner J. , Hartmann D. H. , Schady P. 
Published: May 2018

Abstract
BL Lacertae (BL Lac) objects are prominent members of the third Fermi Large Area Telescope catalog of γ-ray sources. Half of the members of the BL Lac population (∼300) lack redshift measurements, which is due to the absence of lines in their optical spectra, thereby making it difficult to utilize spectroscopic methods. Our photometric dropout technique can be used to establish the redshift for a fraction of these sources. This work employed six filters mounted on the Swift-UVOT and four optical filters on two telescopes, the 0.65 m SARA-CTIO in Chile and 1.0 m SARA-ORM in the Canary Islands, Spain. A sample of 15 sources was extracted from the Swift archival data for which six filter UVOT observations were conducted. By complementing the Swift observations with the SARA ones, we were able to discover two high-redshift sources: 3FGL J1155.4-3417 and 3FGL J1156.7–2250 at

z
=

1.83

−
0.13

+
0.10

and

z
=

1.73

−
0.19

+
0.11

, respectively, resulting from the dropouts in the power-law template fits to these data. The discoveries add to the important (26 total) sample of high-redshift BL Lacs. While the sample of high-z BL Lacs is still rather small, these objects do not seem to fit well within known schemes of the blazar population and represent the best probes of the extragalactic background light.
The Low-luminosity Type IIP Supernova 2016bkv with Early-phase Circumstellar Interaction
Authors: Nakaoka Tatsuya , Kawabata Koji S. , Maeda Keiichi , Tanaka Masaomi , Yamanaka Masayuki , Moriya Takashi J. , Tominaga Nozomu , Morokuma Tomoki , Takaki Katsutoshi , Kawabata Miho , Kawahara Naoki , Itoh Ryosuke , Shiki Kensei , Mori Hiroki , Hirochi Jun , Abe Taisei , Uemura Makoto , Yoshida Michitoshi , Akitaya Hiroshi , Moritani Yuki , Ueno Issei , Urano Takeshi , Isogai Mizuki , Hanayama Hidekazu , Nagayama Takahiro 
Published: May 2018

Abstract
We present optical and near-infrared observations of a low-luminosity (LL) Type IIP supernova (SN) 2016bkv from the initial rising phase to the plateau phase. Our observations show that the end of the plateau is extended to ≳140 days since the explosion, indicating that this SN takes one of the longest times to finish the plateau phase among Type IIP SNe (SNe IIP), including LL SNe IIP. The line velocities of various ions at the middle of the plateau phase are as low as 1000–1500 km s−1, which is the lowest even among LL SNe IIP. These measurements imply that the ejecta mass in SN 2016bkv is larger than that of the well-studied LL IIP SN 2003Z. In the early phase, SN 2016bkv shows a strong bump in the light curve. In addition, the optical spectra in this bump phase exhibit a blue continuum accompanied by a narrow Hα emission line. These features indicate an interaction between the SN ejecta and the circumstellar matter (CSM) as in SNe IIn. Assuming the ejecta–CSM interaction scenario, the mass loss rate is estimated to be

yr−1 within a few years before the SN explosion. This is comparable to or even larger than the largest mass loss rate observed for the Galactic red supergiants (

yr−1 for VY CMa). We suggest that the progenitor star of SN 2016bkv experienced a violent mass loss just before the SN explosion.
The JWST Extragalactic Mock Catalog: Modeling Galaxy Populations from the UV through the Near-IR over 13 Billion Years of Cosmic History
Authors: Williams Christina C. , Curtis-Lake Emma , Hainline Kevin N. , Chevallard Jacopo , Robertson Brant E. , Charlot Stephane , Endsley Ryan , Stark Daniel P. , Willmer Christopher N. A. , Alberts Stacey , Amorin Ricardo , Arribas Santiago , Baum Stefi , Bunker Andrew , Carniani Stefano , Crandall Sara , Egami Eiichi , Eisenstein Daniel J. , Ferruit Pierre , Husemann Bernd , Maseda Michael V. , Maiolino Roberto , Rawle Timothy D. , Rieke Marcia , Smit Renske , Tacchella Sandro , Willott Chris J. 
Published: May 2018

Abstract
We present an original phenomenological model to describe the evolution of galaxy number counts, morphologies, and spectral energy distributions across a wide range of redshifts (

) and stellar masses

. Our model follows observed mass and luminosity functions of both star-forming and quiescent galaxies, and reproduces the redshift evolution of colors, sizes, star formation, and chemical properties of the observed galaxy population. Unlike other existing approaches, our model includes a self-consistent treatment of stellar and photoionized gas emission and dust attenuation based on the beagle tool. The mock galaxy catalogs generated with our new model can be used to simulate and optimize extragalactic surveys with future facilities such as the James Webb Space Telescope (JWST), and to enable critical assessments of analysis procedures, interpretation tools, and measurement systematics for both photometric and spectroscopic data. As a first application of this work, we make predictions for the upcoming JWST Advanced Deep Extragalactic Survey (JADES), a joint program of the JWST/NIRCam and NIRSpec Guaranteed Time Observations teams. We show that JADES will detect, with NIRCam imaging, 1000s of galaxies at z ≳ 6, and 10s at z ≳ 10 at

(5σ) within the 236 arcmin2 of the survey. The JADES data will enable accurate constraints on the evolution of the UV luminosity function at z > 8, and resolve the current debate about the rate of evolution of galaxies at z ≳ 8. Ready-to-use mock catalogs and software to generate new realizations are publicly available as the JAdes extraGalactic Ultradeep Artificial Realizations (JAGUAR) package.
Les groupes virtuels au sein des réseaux sociaux : la virtualisation des liens et ses enjeux sur l’organisation groupale
Authors: Gozlan Angélique 
Published: May 2018

Avec l’avènement des nouvelles technologies numériques, arrivent de nouvelles modalités de liens. Le cyberespace permet de retrouver ses amis après l’école, de rester en permanence en contact avec son réseau qu’il soit professionnel ou amical, de faire de nouvelles rencontres amoureuses ou sexuelles, de jouer au sein d’équipes internationales, de trouver une pluralité de groupes pour toutes questions qui se posent. Le passage à des modes de communication et à un être ensemble au virtuel implique une mutation des liens sociaux. Comment dès lors cette virtualisation des liens réinterroge-t-elle la notion même de groupe ? Comment les théories psychanalytiques sur le groupe peuvent-elles aider à penser le groupe virtuel ? Cet article s’appuiera sur le dispositif virtuel des réseaux sociaux pour expliciter les notions de communauté virtuelle et de virtualisation des liens. À travers l’exemple de la page Facebook Léon Vivien , l’auteure tentera de montrer quels sont les similitudes et les points d’inflexions par rapport aux groupes en présence physique. Il apparaît essentiel de s’interroger sur la groupalité au virtuel, du fait même de l’importance de ces phénomènes aussi bien à un niveau psychopathologique que social.
Anamorphoses de l’adolescence, virtuel et numérique
Authors: Benghozi Pierre 
Published: May 2018

Dans cet article l’auteur propose d’envisager l’adolescence comme une figure paradigmatique du virtuel. L’adolescence est ici pensée comme une adolescence groupale . Il distingue l’adolescence chrysalide pour en dégager une clinique spécifique du virtuel de l’entre-deux. En se centrant sur la dimension virtuelle de l’image du corps groupal, il explicite le rapport des anamorphoses groupales du pubertaire avec l’investissement des adolescents au numérique. Il établit un parallèle entre l’organisation de l’espace vécu des adolescents (figuré par une médiation qu’il appelle le spatiogramme) et les processus psychiques en jeu dans le pubertaire avec la transformation du corps psychique groupal. L’investissement iconophile des écrans numériques est analysé comme une tentative de gestion psychique du pubertaire, à partir d’une extrojection sur la toile numérique des objets internes clivés. Le déplacement sur des avatars numériques témoignerait de l’identité démultipliée diffractée. Il utilise l’analogie avec les « structures dissipatives » décrites par Ilya Prigogine pour illustrer à l’adolescence une tentative de restructuration par le recours au virtuel numérique, du désordre psychique contemporain du pubertaire individuel et groupal familial. L’auteur a souhaité inviter Agathe Manuel à témoigner du groupe et du virtuel de sa place d’adolescente écrivain particulièrement brillante. Dans son texte : « Entropie des Bulles virtuelles : entre appauvrissement et fragmentation », associé à l’article, « l’adolescent semble extérioriser ce foisonnement interne en faisant naître autour de lui des bulles de virtuel, c’est-à-dire qu’il extrait des morceaux du puzzle complexe qu’est son être pour les fixer sur les réseaux sociaux. »
Des restes énigmatiques de l’autre dans l’informatique… à la foule virtuelle des réseaux : La fonction émissaire de l’adolescent
Authors: Duez Bernard 
Published: May 2018

L’auteur montre comment le processus adolescent s’inscrit dans une scénalité en anamorphose avec la structure des réseaux virtuels sur internet. En s’appuyant sur ce qu’il nomme « les restes de l’autre dans l’objet », il montre comment l’objet informatique induit certaines formes spécifiques de liens entre les sujets en réseaux. Ces formes sont proches du fantasme qui encadre l’originaire et le processus adolescent : l’autoengendrement-en-présence-de-l’autre. En reprenant l’ensemble de ces éléments, il montre comment actuellement l’initiation adolescente est une double initiation, celle de l’adolescent par l’establishment et celle de l’establishment par l’adolescent.
Increasing Detection by Reducing Disturbance and Excluding Nontarget Small Mammal Species: An Occupancy Study Approach
Authors: Oddy Donna M. , Stolen Eric D. , Gann Shanon L. , Legare Stephanie A. , Weiss Stephanie K. , Holloway-Adkins Karen G. 
Published: May 2018

Abstract
Track tubes are a noninvasive, efficient method to monitor populations of small mammals that can be implemented on a large landscape scale and are a cost-effective approach for certain sampling situations. As with all field sampling tools, modifications are made depending on research objectives, habitat being sampled, and target species. We conducted two experiments with the objective to increase efficiency and decrease labor while retaining high detection probabilities as part of an Annual Multi-Agency Regional Southeastern Beach Mouse Peromyscus polionotus niveiventris Habitat Occupancy Survey. We conducted studies along a contiguous 72-km coastline of the Cape Canaveral Barrier Island Complex in east-central Florida, USA, that includes the Kennedy Space Center, Cape Canaveral Air Force Station, and Canaveral National Seashore. We conducted the experiments to address several issues that had regularly compromised our survey data. One experiment assessed the ideal length of deployment times for track tubes in various habitat types with multiple species where southeastern beach mice were previously detected. Another experiment, determined how to restrict certain meso-mammal species (raccoons Procyon lotor, and eastern spotted skunks Spilogale putorius) from knocking over the tubes or reaching into the tubes, thus reducing disturbance that results in missing data; or from entering the tubes (cotton rats Sigmodon hispidus), thereby obscuring any potential or actual footprints of the southeastern beach mouse or other targeted species. We observed an increase in the detection rate of southeastern beach mice in track tubes with increased nights of deployment (likelihood ratio test χ2 = 18.71, df = 3, P &lt; 0.001) with the greatest increase between 3 nights and 6 nights and apparent leveling off between nights 9 and 12 and a large decrease in the detection rate of southeastern beach mice in track tubes with 0.5-in. (1.3-cm) excluders compared with the other-size excluders (likelihood ratio test χ2 = 167.89, df = 5, P &lt; 0.001). We also found that 1-in. (2.5-cm) excluders prevented access by meso-mammals or entry by cotton rats and did not adversely affect the detection of either beach mice or cotton mice Peromyscus gossypinus, but did reduce disturbance and resulted in fewer missing data. These statistically significant process improvements have application for others involved with small mammal monitoring and species management.
Short-Term Mortality and Retention Associated with Tagging Age-0 Walleye Using Passive Integrated Transponders Without Anesthesia
Authors: Dembkowski Daniel J. , Isermann Daniel A. , Sass Greg G. 
Published: May 2018

Abstract
The ability to individually mark juvenile fishes has important implications for fisheries management. For example, marking age-0 Walleye Sander vitreus could provide important information not provided by batch-marking, including individual variation in growth and estimates of length-dependent survival and recruitment. However, the relatively small size of age-0 Walleye in northern temperate lakes has precluded use of many common tagging methods that provide information on individual fish (e.g., various anchor tags, jaw tags). Consequently, we evaluated short-term mortality and retention associated with using 12-mm passive integrated transponders (PITs) to mark age-0 Walleye (total length range = 93–216 mm; mean total length = 157 mm) by conducting 48-h within-lake net-pen trials and 7-d hatchery trials during September–October of 2015 and 2016. We did not anesthetize age-0 Walleye prior to PIT tagging. Our assessment allowed us to determine whether post-tagging mortality and PIT retention varied in relation to implant location (i.e., body cavity or pelvic girdle), fish length, and water temperature. During 2015, mean 48-h mortality rate of age-0 Walleye tagged with PITs in the body cavity was low (mean = 7%; SE = 3%) and did not differ from that of fish marked with only a fin clip (mean = 4%; SE = 2%) and reference fish (mean = 2%; SE = 1%). During 2016, mean mortality rates ranged from 2% (reference fish) to 6% (PIT inserted into pelvic girdle) and did not differ among treatments. During both years, mortality rates for nearly all treatments were highest (&gt; 13%) when water temperatures were ≥ 20°C, but decreased below 5% when water temperatures were ≤ 17°C. During 2016, dead age-0 Walleye in both PIT treatments were smaller than fish that survived. During the 7-d hatchery trials, mean mortality rates were higher for age-0 Walleye with PITs inserted into the body cavity (mean = 13%; SE = 4%) than fish that received a PIT in the pelvic girdle (mean = 4%; SE = 1%) and reference fish (mean = 4%; SE = 2%). Retention of PITs was high (&gt; 96%) during all net-pen and hatchery trials. Collectively, our results suggest that fisheries personnel can use PITs to tag age-0 Walleye without anesthesia with the expectations of high initial retention and low mortality. Mortality rates may be minimized by implanting PITs into the pelvic girdle when water temperatures are ≤ 17°C.
Grammaticalité et changement d’acceptabilité : le cas de help
Authors: Pinson Mathilde 
Published: May 2018

Le but de cette contribution est d’établir quel rôle les facteurs processuels jouent dans l’évolution de l’acceptabilité à partir de deux études de cas : la complémentation infinitive du verbe help (avec ou sans to) et la distribution de la construction [capacité + help]. Les corpus sélectionnés pour cette étude, en particulier COHA et l’Old Bailey, révèlent que ces facteurs ne contribuent pas simplement à expliquer la basse fréquence des structures marginales, mais peuvent même être considérés comme le moteur initiant le changement linguistique, confirmant ainsi la prédiction de Rohdenburg (2003 : 243). Le principe d’horror aequi (Brugmann 1909) s’avère être le facteur initial ayant mené à la disparition actuelle de to après help et les difficultés de traitement cognitif s’avèrent être responsables de l’obsolescence de la construction [capacité + help]NPI. En limitant la fréquence de certaines structures, ces facteurs processuels contribuent à diminuer la familiarité des locuteurs avec ces structures, ce qui finit par affecter leurs jugements d’acceptabilité, et, à terme, la grammaire de la langue.