output
19932026
Showing 2026 · astro-ph.GAShow all

12 papers · 2 filters

astro-ph.GA2026

Tidal Grinding of Dwarf Galaxies in Cluster Environments

Sanjaya Paudel, Suk-Jin Yoon, Tek Prasad Adhikari +4

Dwarf elliptical galaxies (dEs) dominate galaxy clusters and provide key constraints on environmentally driven galaxy evolution. Here we examine whether the projected shapes of dEs…

astro-ph.GA2026★ 2 cited

Baryonic mass budgets in the central regions of the Bullet Cluster and their consistency with strong lensing in MOND

Dong Zhang, Hosein Haghi, Elena Asencio +8

Strong lensing observations of the Bullet Cluster have traditionally been regarded as strong evidence for dark matter and a major challenge to Milgromian dynamics (MOND). The offse…

astro-ph.GA2026

Full-polarization millimeter wavelength variability of Sagittarius A* during the 2018 EHT campaign

Ezequiel Albentosa-Ruiz, Jasmin E. Washington, Nicola Marchili +272

Sagittarius A* (Srg A*), the supermassive black hole at the center of the Milky Way, provides a unique laboratory to study accretion dynamics and plasma processes near the event ho…

astro-ph.GA2026

The SPHINX public data release. II. Using low-ionisation absorption lines and dust attenuation to predict Lyman continuum escape

Valentin Mauerhofer, Jérémy Blaizot, Thibault Garel +11

Low-ionisation state (LIS) absorption lines, such as SiII 1526, are widely used to trace the properties of the interstellar medium (ISM) in galaxies. These lines provide crucial in…

astro-ph.GA2026

BASS. LI. Cool gas supply of HI-massive local Seyfert galaxies

Jeein Kim, Aeree Chung, O. Ivy Wong +19

We present neutral atomic hydrogen (HI) imaging observations of 22 HI-rich (), hard X-ray-selected local Seyferts to explore how cool gas is su…

astro-ph.GA2026

Effects of resolution and local stability on galactic disks: Halo resolution and softening on bar formation

SungWon Kwak, Ivan Minchev, Matthias Steinmetz +1

Using N-body simulations, we examine the impact of dark matter (DM) halo resolution and gravitational softening on bar formation. We generate isolated disk-halo systems with fixed…

astro-ph.GA2026

AVID: A Near-Major Post-Merger of Late-Type Dwarfs beneath a Regularly Rotating HI Disk (VCC 693)

Fujia Li, Hong-Xin Zhang, Elias Brinks +23

On the periphery of galaxy clusters, moderately high galaxy densities and velocity dispersions favour interactions and mergers that influence galaxy evolution prior to cluster infa…

astro-ph.GA2026

WISDOM Project - XXVII. Giant molecular clouds of the lenticular galaxy NGC 1387: similarities with spiral galaxy clouds

Fu-Heng Liang, Martin Bureau, Lijie Liu +10

Molecular gas is crucial to understanding star formation and galaxy evolution, but the giant molecular clouds (GMCs) of early-type galaxies (ETGs) have rarely been studied. Here, w…

astro-ph.GA2026★ 1 cited

ARCHITECTS I: Impact of subgrid physics on the simulated properties of the circumgalactic medium

Maxime Rey, Jérémy Blaizot, Taysun Kimm +2

Galaxy evolution is shaped by star formation and stellar feedback at scales unresolved by current high-resolution cosmological simulations. Precise subgrid models are thus necessar…

astro-ph.GA2026

Downsizing does not extend to dwarf galaxies: identifying the stellar mass regimes shaped by supernova and AGN feedback

Ilin Lazar, Sugata Kaviraj, Garreth Martin +10

We explore how the fraction of red (quenched) galaxies varies in the dwarf galaxy regime (10^7 MSun < Mstar < 10^9.5 MSun), using a mass-complete sample of ~5900 dwarfs at z<0.15,…

astro-ph.GA2026★ 3 cited

The Host Galaxies of Active Galactic Nuclei with Direct Black Hole Mass Measurements

Vardha N. Bennert, Nico Winkel, Tommaso Treu +13

Reverberation mapping (RM) determines the mass of black holes (BH) in active galactic nuclei (AGNs) by resolving the BH gravitational sphere of influence in the time domain. Recent…

astro-ph.GA2026

Evaluating star formation rates at z = 5

D. Ismail, K. Kraljic, M. Béthermin +11

Inferring the star formation rates (SFR) in high redshift galaxies remains challenging, owing to observational limitations or uncertainties in calibration methods that link luminos…