output
19912026
Showing 2026 · astro-ph.GAShow all

17 papers · 2 filters

astro-ph.GA2026

Non-Axisymmetric Pillar Structures due to Embedded Stars in AGN Accretion Discs

Jiamu Huang, Douglas N. C. Lin, Keith Horne

Gravitationally unstable outer regions of AGN discs may host in situ formation of massive stars whose heating produces localized vertical "pillars" on the disc surface, in the same…

astro-ph.GA2026

The Delegate Survey: KOALA/AAOmega-IFU spectroscopy of three nearby dwarf galaxies

Kyungdo Ko, Helmut Jerjen, Sarah M. Sweet +6

Assessing the cosmological typicality of the Local Group is crucial for establishing whether its dwarf galaxy population is representative. To this end, the Delegate Survey targets…

astro-ph.GA2026

Formation of globular cluster-rich ultra-diffuse galaxies through mergers

Truman Tapia, Hidenori Matsui, Kenji Bekki +6

We use high-resolution, idealized hydrodynamic simulations of gas-rich dwarf-galaxy mergers to test whether such encounters can form ultra-diffuse galaxies (UDGs) with globular clu…

astro-ph.GA2026

The Panchromatic Hubble Andromeda Southern Treasury (PHAST). II. The Spatially Resolved Recent Star Formation History in M31

Tobin M. Wainer, Benjamin F. Williams, Zhuo Chen +19

We use Hubble Space Telescope optical imaging from the Panchromatic Hubble Andromeda Southern Treasury (PHAST) to measure the spatially resolved recent star formation history (SFH)…

astro-ph.GA2026★ 2 cited

The Cliff: A Metal-Poor Little Red Dot Hosting an Overmassive Black Hole at

Lucy R. Ivey, Francesco D'Eugenio, Roberto Maiolino +18

JWST has revealed a large population of massive black holes (BHs) in the early Universe with unusual properties which mark them as distinct from low-redshift active galactic nuclei…

astro-ph.GA2026

Tracing Active Galactic Nuclei Properties Through a Changing-look Event

Joel Carpenter, Sandra Raimundo, Charlotte Angus +1

Changing-look transitions challenge our understanding of active galactic nuclei (AGN), exhibiting dramatic changes in broad-line emission and continuum flux on timescales of months…

astro-ph.GA2026

Spectroscopic confirmation of dual and offset quasars from the Subaru HSC-SSP program

Shenli Tang, John Silverman, Xavier Prochaska +4

We present a spectroscopic follow-up program targeting closely-separated dual quasar candidates selected from imaging of SDSS quasars with the Subaru Hyper Suprime-Cam Subaru Strat…

astro-ph.GA2026★ 1 cited

The effects of bar strength and kinematics on galaxy evolution II: The global and local impacts of slow-strong bars

Petra Mengistu, Karen L. Masters, Tobias Geron +3

There is now clear evidence, from a variety of studies, that galactic bars contribute to and/or accelerate processes which quench galaxies. However, bars have a variety of strength…

astro-ph.GA2026

Out of oxygen: Extremely metal-poor galaxy candidates identified at with deep JADES medium-band imaging

James A. A. Trussler, Daniel J. Eisenstein, Andrew J. Bunker +27

JWST is beginning to uncover a population of extremely metal-poor galaxies (EMPGs, ) at , mostly through serendipitous NIRSpec discoveries and blin…

astro-ph.GA2026

The Salamander: A case study of the magnetic field and peculiar morphology of G309.8-2.6 through radio polarimetry

Wenhui Jing, Jennifer L. West, Xiaohui Sun +17

Studying the interaction between core-collapse supernova remnants (SNRs) and their surrounding environments is essential to understanding the mechanism for energy transfer to the i…

astro-ph.GA2026

A new wideband radio polarization observation of the Supernova Remnant G315.42.3

X. Chen, X. Sun, J. F. Kaczmarek +3

The supernova remnant (SNR) G315.42.3 (MSH 1463 or RCW 86) exhibits strong emission across the electromagnetic spectrum. Radio polarization observations probe magnetic fields…

astro-ph.GA2026

Constraining the mass of the M31 ionized baryon Halo using CHIME/FRB Catalog 2

Lordrick A. Kahinga, J. Xavier Prochaska, Sunil Simha +21

The circumgalactic medium (CGM) surrounding galaxies is believed to be a significant reservoir of baryons, yet its total mass remains poorly constrained. We present a novel approac…

astro-ph.GA2026

Predicting Resolved Dust Attenuation from Local Galaxy Properties Using MaNGA

Anilkumar Mailvaganam, Tayyaba Zafar, Pablo Corcho-Caballero +4

Accurate spatially resolved dust corrections are critical for interpreting the structure and evolution of star-forming galaxies (SFGs). We present an empirical model for predicting…

astro-ph.GA2026★ 1 cited

You can't see me: Super-Eddington growth hindering X-ray detection in high-z broad-line active galactic nuclei

Alessandro Trinca, Alessandro Lupi, Francesco Haardt +1

We revisit black hole mass estimates for high-redshift broad-line active galactic nuclei (AGNs) discovered with JWST by jointly analysing their broad emission lines and their syste…

astro-ph.GA2026

Properties of Polarized Radio Sources in the Wide Chandra Deep Field South from 2 to 4GHz

Samantha Adams, Mark Lacy, Preshanth Jagannathan +14

We present a study of the linear polarization properties of radio sources within the 10 deg Wide Chandra Deep Field South (W-CDFS) in S-band (2-4 GHz). Our W-CDFS image has an…

astro-ph.GA2026★ 5 cited

JWST Advanced Deep Extragalactic Survey (JADES) Data Release 5: Photometric Catalog

Brant E. Robertson, Benjamin D. Johnson, Sandro Tacchella +34

JADES Data Release 5 (DR5) photometric catalogs and describes the methodologies used for source detection, deblending, photometry, uncertainty estimation, and catalog curation. The…

astro-ph.GA2026★ 3 cited

A precessing jet from an active galactic nucleus drives gas outflow from a disk galaxy

Justin A. Kader, Vivian U, Loreto Barcos-Muñoz +30

To reproduce observed galaxy properties, cosmological simulations require that massive galaxies experience feedback from active galactic nuclei, which regulates star formation with…