bluuebunny/crossref_metadata_2025_split huggingface dataset:
The Metallicity Dilution in Local Massive Early-type Galaxies
Authors: Wu Yu-zhong , Zhang Wei 
Published: October 2024

Abstract
We derive a sample of 114 Baldwin–Phillips–Terlevich-diagram star-forming and Wide-field Infrared Survey Explorer (WISE) low-star-formation-rate early-type galaxies (ETGs) by utilizing the criterion W2 − W3 < 2.5 (where W2 and W3 are the wavelengths of 4.6 and 12 μm in the WISE four bands) and cross matching the Galaxy
Zoo 1 and the catalog of the Sloan Digital Sky Survey (SDSS) Data Release 7 Max Planck Institute for Astrophysics-Johns Hopkins University emission-line measurements. We find that ∼28% of our ETGs exhibit a metallicity that is at least 2 standard deviation (0.26 dex) below the mass–metallicity (MZ) relation of star-forming galaxies (SFGs) from the SDSS. We demonstrate that almost all of our ETGs locate below the “main sequence” of SFGs. We find that these ETGs with larger metallicity deviation from the MZ relation tend to have lower SFR and redder color. By exploring the dilution properties of these massive ETGs, we report that the dilution effect may be mainly attributed to the inflow of metal-poor gas from mergers/interaction or the intergalactic medium.
Determining the Extents, Geometries, and Kinematics of Narrow-line Region Outflows in Nearby Seyfert Galaxies
Authors: Polack Garrett E. , Revalski Mitchell , Crenshaw D. Michael , Fischer Travis C. , Schmitt Henrique R. , Kraemer Steven B. , Meena Beena , Rafelski Marc 
Published: October 2024

Abstract
Outflowing gas from supermassive black holes in the centers of active galaxies has been postulated as a major contributor to galactic evolution. To explore the interaction between narrow-line region (NLR) outflows and their host galaxies, we use Hubble Space Telescope (HST) Space Telescope Imaging Spectrograph (STIS) spectra and Wide Field Camera 3 (WFC3) images of 15 nearby (z < 0.02) active galactic nuclei (AGN) to determine the extents and geometries of their NLRs. We combine new HST WFC3 continuum and [O iii] λ5007 images of 11 AGN with four archival AGN to match existing spectra from HST STIS. For the six AGN with suitable long-slit coverage of their NLRs, we use isophotal fitting of ground-based images, continuum-subtracted [O iii] images, and the STIS spectra, to resolve, measure, and de-project the gas kinematics to the plane of the host galaxy disk and distinguish NLR outflows from galaxy rotation and/or kinematically disturbed gas. We find an average [O iii] extent of ∼680 pc with a correlation between gas extent and [O iii] luminosity of R
[O III] ∝

L

[
O

III
]

0.39

. The measured extents depend strongly on the depth of the [O iii] images, highlighting the importance of adopting uniform thresholds when analyzing scaling relationships. The outflows reach from 39% to 88% of the full NLR extents, and we find that all six of the AGN with STIS coverage of their entire NLRs show strong kinematic evidence for outflows, despite previous uncertainty for these AGN. This suggests that NLR outflows are ubiquitous in moderate-luminosity AGN and that standard criteria for kinematic modeling are essential for identifying outflows.
Abundant Molecular Gas in the Central Region of Lenticular Galaxy PGC 39535
Authors: Cui 崔 Jiantong 健童 , Gu Qiusheng , Lu Shiying , Chen Zhengyi , Xu Can , Gao Zeyu 
Published: October 2024

Abstract
Lenticular galaxies (S0s) in the local Universe are generally absent of recent star formation and lack molecular gas. In this paper, we investigate one massive (M
* ∼ 5 × 1010
M
⊙) star-forming S0, PGC 39535, with the Northern Extended Millimeter Array (NOEMA). Using optical data from the Sloan Digital Sky Survey IV Mapping Nearby Galaxies at the Apache Point Observatory survey, we find star formation mainly concentrates in the central region of PGC 39535. The total star formation rate estimated using extinction-corrected Hα flux is 1.57 M
⊙ yr−1. The results of the NOEMA observation suggest that the molecular gas mainly concentrates in the central regions as a gaseous bar and a ring-like structure, and shows similar kinematics as the stellar and ionized gas components. The total molecular gas mass estimated from CO(1–0) is (5.42 ± 1.52) × 109
M
⊙. We find PGC 39535 lies on the star-forming main sequence but falls below the Kennicutt–Schmidt relation of spiral galaxies, suggesting that the star formation efficiency may be suppressed by the massive bulge. The existence of a second Gaussian component in the CO spectrum of the central region indicates possible gas flows. Furthermore, our analyses suggest that PGC 39535 resides in the center of a massive group and the derived star formation history indicates it may experience a series of gas-rich mergers over the past 2–7 Gyr.
Interpreting Mass and Radius Measurements of Neutron Stars with Dark Matter Halos
Authors: Shawqi Shafayat , Morsink Sharon M. 
Published: October 2024

Abstract
The high densities of neutron stars (NSs) could provide astrophysical locations for dark matter (DM) to accumulate. Depending on the DM model, these DM admixed NSs (DANSs) could have significantly different properties than pure baryonic NSs, accessible through X-ray observations of rotation-powered pulsars. We adopt the two-fluid formalism in general relativity to numerically simulate stable configurations of DANSs, assuming a fermionic equation of state (EOS) for the DM with repulsive self-interaction. The distribution of DM in the DANS as a halo affects the path of X-rays emitted from hot spots on the visible baryonic surface, causing notable changes in the pulse profile observed by telescopes such as NICER, compared to pure baryonic NSs. We explore how various DM models affect the DM mass distribution, leading to different types of dark halos. We quantify the deviation in observed X-ray flux from stars with each of these halos. We identify the pitfalls in interpreting mass and radius measurements of NSs inferred from electromagnetic radiation and constraining the baryonic matter EOS if these dark halos exist.
Orbital Support and Evolution of CX/OX Structures in Boxy/Peanut Bars
Authors: Tahmasebzadeh Behzad , Dattathri Shashank , Valluri Monica , Shen Juntai , Zhu Ling , Wheeler Vance , Gerhard Ortwin , Kataria Sandeep Kumar , Beraldo e Silva Leandro , Daniel Kathryne J. 
Published: October 2024

Abstract
Barred galaxies exhibit boxy/peanut or X-shapes (BP/X) protruding from their disks in edge-on views. Two types of BP/X morphologies exist depending on whether the X-wings meet at the center (CX) or are off-centered (OX). Orbital studies indicate that various orbital types can generate X-shaped structures. Here we provide a classification approach that identifies the specific orbit families responsible for generating OX- and CX-shaped structures. Applying this approach to three different N-body bar models, we show that both OX and CX structures are associated with the x1 orbit family, but OX-supporting orbits possess higher angular momentum (closer to x1 orbits) than orbits in CX structures. Consequently, as the bar slows down, the contribution of higher angular momentum OX-supporting orbits decreases and that of lower angular momentum orbits increases, resulting in an evolution of the morphology from OX to CX. If the bar does not slow down, the shape of the BP/X structure and the fractions of OX/CX-supporting orbits remain substantially unchanged. Bars that do not undergo buckling but that do slow down initially show the OX structure and are dominated by high angular momentum orbits, transitioning to a CX morphology. Bars that buckle exhibit a combination of both OX- and CX-supporting orbits immediately after the buckling but become more CX dominated as their pattern speed decreases. This study demonstrates that the evolution of BP/X morphology and orbit populations strongly depends on the evolution of the bar angular momentum.
Reconstructing the Genealogy of LIGO-Virgo Black Holes
Authors: Mahapatra Parthapratim , Chattopadhyay Debatri , Gupta Anuradha , Antonini Fabio , Favata Marc , Sathyaprakash B. S. , Arun K. G. 
Published: October 2024

Abstract
We propose a Bayesian inference framework to predict the merger history of LIGO-Virgo binary black holes (BHs), whose binary components may have undergone hierarchical mergers in the past. The framework relies on numerical relativity predictions for the mass, spin, and kick velocity of the remnant BHs. This proposed framework computes the masses, spins, and kicks imparted to the remnant of the parent binaries, given the initial masses and spin magnitudes of the binary constituents. We validate our approach by performing an “injection study” based on a constructed sequence of hierarchically formed binaries. Noise is added to the final binary in the sequence, and the parameters of the “parent” and “grandparent” binaries in the merger chain are then reconstructed. This method is then applied to three GWTC-3 events: GW190521, GW200220_061928, and GW190426_190642. These events were selected because at least one of the binary companions lies in the putative pair-instability supernova mass gap, in which stellar processes alone cannot produce BHs. Hierarchical mergers offer a natural explanation for the formation of BHs in the pair-instability mass gap. We use the backward evolution framework to predict the parameters of the parents of the primary companion of these three binaries. For instance, the parent binary of GW190521 has masses

72

−
22

+
32

M

⊙

and

31

−
23

+
24

M

⊙

within the 90% credible interval. Astrophysical environments with escape speeds ≥100 km s−1 are preferred sites to host these events. Our approach can be readily applied to future high-mass gravitational wave events to predict their formation history under the hierarchical merger assumption.
Learning the Universe: GalactISM Simulations of Resolved Star Formation and Galactic Outflows across Main-sequence and Quenched Galactic Environments
Authors: Jeffreson Sarah M. R. , Ostriker Eve C. , Kim Chang-Goo , Gensior Jindra , Bryan Greg L. , Davis Timothy A. , Hernquist Lars , Hassan Sultan 
Published: October 2024

Abstract
We present a suite of six high-resolution chemodynamical simulations of isolated galaxies, spanning observed disk-dominated environments on the star-forming main sequence, as well as quenched, bulge-dominated environments. We compare and contrast the physics driving star formation and stellar feedback among the galaxies, with a view to modeling these processes in cosmological simulations. We find that the mass loading of galactic outflows is coupled to the clustering of supernova explosions, which varies strongly with the rate of galactic rotation Ω = v
circ/R via the Toomre length, leading to smoother gas disks in the bulge-dominated galaxies. This sets an equation of state in the star-forming gas that also varies strongly with Ω, so that the bulge-dominated galaxies have higher midplane densities, lower velocity dispersions, and higher molecular gas fractions than their main-sequence counterparts. The star formation rate in five out of six galaxies is independent of Ω and is consistent with regulation by the midplane gas pressure alone. In the sixth galaxy, which has the most centrally concentrated bulge and thus the highest Ω, we reproduce dynamical suppression of the star formation efficiency in agreement with observations. This produces a transition away from pressure-regulated star formation.
Coordinated JWST Imaging of Three Distance Indicators in a Supernova Host Galaxy and an Estimate of the Tip of the Red Giant Branch Color Dependence
Authors: Hoyt Taylor J. , Jang In Sung , Freedman Wendy L. , Madore Barry F. , Lee Abigail J. , Owens Kayla A. 
Published: October 2024

Abstract
Boasting a 6.5 m mirror in space, JWST can increase by several times the number of supernovae (SNe) to which a redshift-independent distance has been measured with a precision distance indicator (e.g., tip of the red giant branch (TRGB) or Cepheids); the limited number of such SN calibrators currently dominates the uncertainty budget in distance ladder Hubble constant (H
0) experiments. JWST/NIRCAM imaging of the Virgo Cluster galaxy NGC 4536 is used here to preview JWST program GO-1995, which aims to measure H
0 using three stellar distance indicators (Cepheids, TRGB, and J-branch asymptotic giant branch/carbon stars). Each population of distance indicator was here successfully detected—with sufficiently large number statistics, well-measured fluxes, and characteristic distributions consistent with ingoing expectations—so as to confirm that we can acquire distances from each method precise to about 0.05 mag (statistical uncertainty only). We leverage overlapping Hubble Space Telescope imaging to identify TRGB stars, crossmatch them with the JWST photometry, and present a preliminary constraint on the slope of the TRGB’s F115W versus (F115W – F444W) relation equal to −0.99 ± 0.16 mag mag−1. This slope is consistent with prior slope measurements in the similar Two Micron All-Sky Survey J band, as well as with predictions from the BaSTI isochrone suite. We use the new TRGB slope estimate to flatten the 2D TRGB feature and measure a (blinded) TRGB distance relative to a set of fiducial TRGB colors, intended to represent the absolute fiducial calibrations expected from geometric anchors such as NGC 4258 and the Magellanic Clouds. In doing so, we empirically demonstrate that the TRGB can be used as a standardizable candle at the IR wavelengths accessible with JWST.
Unveiling the Connection between the Alfvénic Oval and the Open–Closed Field Line Boundary at Ganymede
Authors: Yan Tao , Zhang Binzheng , Chen Junjie , Yang Ziyi , Ye Shengyi , Cui Jun 
Published: October 2024

Abstract
Alfvén waves generated by the interactions between the Ganymede magnetosphere and the fast-corotating Jovian plasma carry a significant amount of energy. This energy is partially transferred to precipitating particles, which correspond to a feature called the Alfvénic oval. However, the spatial distribution of the Alfvénic oval in the Ganymede system is unclear, and the physical correlation between the Alfvénic oval and the open–closed field line boundary (OCFB) has not been studied quantitatively. Using a high-resolution, three-dimensional global magnetohydrodynamics simulation of Ganymede's magnetosphere, we investigate the spatial distribution of the Alfvénic oval mapped on the ionosphere surface of Ganymede based on upstream measurements from Juno's PJ34 flyby. Our results show that (1) the simulated Alfvénic oval of Ganymede closely resembles the observed aurora oval, and although without kinetic physics, the magnitude of the simulated Afvénic Poynting flux is significantly lower than the estimation based on auroral luminosity; (2) the OCFB aligns closely with the poleward (equatorial) boundary of the enhanced Alfvénic power on the downstream (upstream) side; and (3) the magnetospheric flux tube convection pattern can guide the Alfvénic wave packet to propagate toward latitudes either equatorward or poleward of the OCFB on the downstream/upstream side. These results, presented for the first time in this study, provide testable predictions for both the ongoing Juno mission and future Jovian missions such as JUICE probing the minimagnetosphere system.
L’écriture de la mémoire de l’expérience migratoire dans le cinéma grec contemporain : Third Kind (Zois, 2018) et Des spectres hantent l’Europe (Kourkouta et Giannar, 2016)
Authors: Peluchon Sacha 
Published: October 2024

L’article propose une analyse esthétique du court-métrage de fiction Third Kind de Yorgos Zois (2018) et du long-métrage documentaire Des spectres hantent l’Europe de Maria Kourkouta et Niki Giannar (2016). Il interroge les modalités du regard mis en scène sur les personnes migrantes qui cherchent à traverser la Grèce et qui sont filmées alors qu’elles se retrouvent bloquées dans différents camps. La question est de savoir à qui appartient la mémoire qui s’écrit cinématographiquement : aux personnes qui effectuent ce périple ou à celles et ceux qui les regardent ? L’analyse porte sur le paradoxe du caractère d’invisibilité des personnes migrantes qui sont pourtant le sujet principal des œuvres, puis sur le choix des temporalités pour représenter cette expérience. Celle-ci renvoie à une situation d’urgence saisie dans son instantanéité, et pourtant simultanément inscrite dans le long cours de l’Histoire et par conséquent renvoyée à un récit déjà écrit, situé au passé. Il sera en définitive question d’interroger le rapport en tant que spectateur·rice à une situation présentée comme hors de sa visibilité, hors de son temps et donc hors de sa portée.
Immigrants Τhen and Νow. The Synaxary of Andreas Kordopatis by Thanasis Valtinos at the Antonis Antoniou Theatrical Stage
Authors: Antoniou Michaela 
Published: October 2024

The Synaxary of Andreas Kordopatis by Thanasis Valtinos was published serially in the magazine Tahydromos in 1964 and was first published in 1978 by Kedros Publications. In the first of two books about Kordopatis, subtitled America, Valtinos recounts the adventures of Andreas Kordopatis, a real person, from Dara, Mantinea, and his repeated attempts to emigrate to the United States in search of a better life. Antonis Antoniou, fascinated by the text since its first publication, decided to adapt it for the stage in the winter of 2011. This choice is, of course, not an accidental one. The actor and director sees the relevance of the two eras and considers Valtinos’ play to be timely at a time when another wave of immigrants is flowing out of Greece during the economic crisis of the 21st century. The article briefly introduces this particular play by Valtinos, examines Antoniou’s selection of excerpts and analyses the stage presentation of the text and the performance. Most importantly, it identifies and highlights the parallel trajectories of the migrant in the era of Kordopatis, the era of the writing of the text, and the era of the performance, attempting to trace differences and similarities, but ultimately the essence of the driving force of migration. Important aspects of the paper are the success of the production, but also the monologue as both a genre, aiming, among other things, at introspection, and as a practical choice in a period of economic crisis.
La représentation et la perception de la xenitia dans la poésie orale de l’île de Karpathos
Authors: Nittis Mélanie 
Published: October 2024

L’exil de la population grecque est une réalité qui a largement inspiré la création de chants populaires depuis les chants démotiques de l’époque byzantine jusqu’aux chansons urbaines créées à partir de la fin du xixe siècle. Le village d’Olympos dans l’île de Karpathos connaît lui aussi un dépeuplement de plus en plus important, et ce thème de l’exil continue d’y être chanté encore aujourd’hui lors de glentia, des fêtes diverses de la communauté villageoise, auxquelles participent aussi ceux qui ont émigré. L’exil est évoqué, d’une part, dans les chants démotiques qui ont été transmis oralement de génération en génération et, d’autre part, dans les distiques appelés mantinades qui sont créés par les hommes lors de l’improvisation poétique chantée. La représentation de la xenitia à travers la poésie orale de ces chants reflète la perception de l’exil au sein de cette communauté rurale dont la plupart de ses membres vivent en dehors du village.
Littérature et migration : imaginaire littéraire national, créolisation, cybermigration
Authors: Coavoux Sophie 
Published: October 2024

Si la rencontre entre migration et littérature n’est pas un phénomène nouveau dans l’espace grec, elle voit se dessiner, depuis les années 1990, de nouveaux horizons. La reconfiguration des expériences migratoires, le contexte mondial de mobilité transnationale, le renouvellement des écritures migrantes dans un monde globalisé, comme la cybermigration de la littérature à l’ère d’internet ne s’accommodent plus du paradigme de la littérature nationale, longtemps circonscrit dans l’imaginaire de la nation. Ces nouvelles écritures en mouvement produites par la « créolisation » des identités nationales (Édouard Glissant) imposent tout à la fois un décentrement et un tournant critique. À visée essentiellement exploratoire, l’objet de cet article est d’esquisser un panorama des réflexions que suscitent ces mutations de la littérature comme des études littéraires dans l’espace grec et d’aborder quelques-uns des problèmes historiographiques et épistémologiques qu’elles soulèvent.
Diagnoses of children living with HIV before and during the COVID-19 pandemic
Authors: Shange Asandiswa L. , Frigati Lisa J. , Dzikiti Moleen 
Published: October 2024

Background: There is limited data on diagnoses during hospital stay among children living with HIV(CLHIV) in the antiretroviral and coronavirus disease 2019 (COVID-19) era.Objectives: The aim of this study was to describe hospital diagnoses and clinical characteristics of CLHIV before and during the COVID-19 pandemic.Method: A retrospective descriptive cross-sectional study was performed. Clinical and laboratory data were retrieved by reviewing folders and discharge summaries from January 2019 to December 2021. Period A (pre-COVID-19) was defined as the period from January 2019 to March 2020. Period B (During COVID-19) was defined as being from April 2020 to December 2021.Results: Ninety-six children contributed 215 diagnoses over the study period. The five most common diagnoses were unspecified HIV disease (47/215, 21.9%), tuberculosis (TB) (42/215, 19.5%), pneumonia (13/215, 6.0%), encephalopathy (11/215, 5.1%) and malnutrition (11/215, 5.1%). Median CD4 count was 377 cells/mm (IQR 126, 726) and 8.0% of the children were virally suppressed. Ninety-five per cent of the children had WHO Stage 3 and 4 (95%) disease and 12.5% of children required ICU admission. No child was diagnosed with COVID-19 despite universal screening. Moreover, 81.7% of the children had a social worker referral documented.Conclusion: Advanced HIV disease (AHD) remains prevalent with TB being the most common diagnosis. There were no cases of COVID-19 recorded in CLHIV.Contribution: The findings provide a description of the diagnoses of CLHIV in the South African setting prior to and during the COVID-19 pandemic. It highlights the need for more specific documentation of diagnoses to inform better prevention of AHD in children.
Residually finite non-linear hyperbolic groups
Authors: Tholozan Nicolas , Tsouvalas Konstantinos 
Published: October 2024

We exhibit the first examples of residually finite non-linear Gromov hyperbolic groups. Our examples are constructed as amalgamated products of torsion-free cocompact lattices in the rank

1

Lie group

\mathsf{Sp}(d,1)

,

d \geq2

, along maximal cyclic subgroups.
NEST‐C: A deep learning compiler framework for heterogeneous computing systems with artificial intelligence accelerators
Authors: Park Jeman , Yu Misun , Kwon Jinse , Park Junmo , Lee Jemin , Kwon Yongin 
Published: October 2024

AbstractDeep learning (DL) has significantly advanced artificial intelligence (AI); however, frameworks such as PyTorch, ONNX, and TensorFlow are optimized for general‐purpose GPUs, leading to inefficiencies on specialized accelerators such as neural processing units (NPUs) and processing‐in‐memory (PIM) devices. These accelerators are designed to optimize both throughput and energy efficiency but they require more tailored optimizations. To address these limitations, we propose the NEST compiler (NEST‐C), a novel DL framework that improves the deployment and performance of models across various AI accelerators. NEST‐C leverages profiling‐based quantization, dynamic graph partitioning, and multi‐level intermediate representation (IR) integration for efficient execution on diverse hardware platforms. Our results show that NEST‐C significantly enhances computational efficiency and adaptability across various AI accelerators, achieving higher throughput, lower latency, improved resource utilization, and greater model portability. These benefits contribute to more efficient DL model deployment in modern AI applications.