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943 papers · 1 filter

astro-ph.GA2026

How can we finally see the first light? Status and perspective in the search for Population III stars

Alessandra Venditti, Daniel Schaerer, Erik Zackrisson +26

Finding the first (Population III or Pop III) stars is one of the fundamental quests of astronomy, aiming to deliver the missing link in how stars form at early cosmic times. Yet t…

astro-ph.GA2026

Satellite quenching by radio jets of central galaxies in galaxy groups

Yijun Wang, Tao Wang, Dingyi Zhao +9

Feedback from active galactic nuclei (AGN) is now recognized as a key component of galaxy formation models. It plays a central role in regulating the growth and quenching of galaxi…

astro-ph.GA2026

Quenching of Star Formation in Massive Galaxies

Katherine E. Whitaker, Rachel Bezanson

The shutdown of star formation - quenching - marks a pivotal transition in the lives of massive galaxies, which dominate the present-day stellar mass density. This review synthesiz…

astro-ph.GA2026★ 1 cited

Discovery of a Barred-Spiral Galaxy at = 3.16 II. The Star Formation History

Yingjie Cheng, Mauro Giavalisco, Daniel Ivanov +6

We present a detailed analysis of a massive barred galaxy at using deep multi-band imaging from HST and JWST. For the first time, we resolve its morphology and st…

astro-ph.GA2026

Compact Core, Extended Reach: A Bipolar kpc-Scale Elongation in a Little Red Dot at

Zhiyuan Ji, Yang Sun, Mauro Giavalisco +7

Little Red Dots (LRDs) appear extremely compact at rest-frame optical wavelengths, yet many show extended rest-frame UV morphology revealing more complex internal structure. We pre…

astro-ph.GA2026

Toward Unbreaking the Universe: MINERVA Measurements of Color Gradients in Massive Quiescent Galaxies Can Help Ease Too-Early Star Formation Tensions

Sam E. Cutler, Luke Robbins, Danilo Marchesini +41

The discovery of a population of massive, ancient quiescent galaxies within the first 2 Gyr of the Universe's history has led to significant tensions with models of galaxy formatio…

astro-ph.GA2026

Super-Eddington accretion of black holes in early nuclear bursts gives birth to Little Red Dots

Yangyao Chen, Houjun Mo

In a recent paper, Chen et al. developed a framework for modeling the seeding and growth of supermassive black holes (BHs) in the context of CDM cosmogony. Here, we use a set of…

astro-ph.GA2026

Galaxy populations in groups and clusters-II. Conditional luminosity functions at redshifts from z~1 to z~0

Ce Gao, Cheng Li, Houjun Mo +5

Using DESI SV3 spectroscopic group centrals and HSC photometric data, we measure conditional luminosity functions (CLFs) of central and satellite galaxies for red and blue populati…

astro-ph.GA2026★ 1 cited

Galaxy UV Legacy Project: Survey Description and First Insights Into NGC 4449 Recent History of Star Formation

E. Sabbi, B. Meena, P. Zeidler +18

The Galaxy UV Legacy Project (GULP) is a Cycle 28 Treasury program with the Hubble Space Telescope (HST) designed to characterize resolved massive stars, OB associations, and young…

astro-ph.GA2026★ 4 cited

A Morphology Catalog of Galaxies in CEERS: Evolution in the Size and Color Gradients of Galaxies Since Cosmic Dawn

Elizabeth J. McGrath, Steven L. Finkelstein, Guillermo Barro +42

We present measurements of morphological parameters from fitting 53,885 galaxies detected to a magnitude limit of F356W in the CEERS NIRCam imaging with galfit in six broad…

astro-ph.GA2026

There and back again? Neutral outflows in z~3.5 quiescent galaxies

Pengpei Zhu, Kei Ito, Francesco Valentino +16

Neutral gas outflows play a crucial role in the baryon cycle of galaxies, their properties provide key insights into the transition from star formation to quiescence. In this work,…

astro-ph.GA2026

Obscured AGN at z < 1.5: X-ray to Far-Infrared SEDs and Host Galaxy Morphologies in the GOODS Fields

William W. H. Jarvis, Connor Auge, David Sanders +9

We present an analysis of spectral energy distributions (SEDs), galaxy light profiles, and visual morphological classifications for 194 X-ray luminous AGN (intrinsic absorption-cor…

astro-ph.GA2026★ 1 cited

Mapping the Distorted Dark Matter Distribution of the LMC-SMC System Prior to Milky Way Infall with Basis Function Expansions

Hayden R. Foote, Himansh Rathore, Gurtina Besla +6

The SMC orbits within the LMC's dark matter (DM) halo in a 1:10 mass-ratio encounter. The LMC:Milky Way (MW) interaction is also 1:10, and is expected to perturb the MW…

astro-ph.GA2025

Observations of AGN-driven feedback: dynamics and ionization of the filaments in M87

Camille Poitras, Marie-Lou Gendron-Marsolais, Valeria Olivares +9

We present a comprehensive kinematic and ionization analysis of the warm ionized filaments ( K) in M87, the central galaxy of the Virgo cluster, using new integral field spec…

astro-ph.GA2025

The AGN nature of strong CIII emitters in the Early Universe with JWST

F. Arevalo-Gonzalez, R. Tripodi, M. Llerena +21

The semi-forbidden CIII] 1907,1909 doublet is a key tracer of high-ionization emission in the early universe. We present a study of CIII] emission in galaxies at z=5-7, using p…

astro-ph.GA2025

Building a Radio AGN Sample from Cosmic Morning -- The Radio High-Redshift Quasar Catalog (RHzQCat): I. Catalog from SDSS Quasars and Radio Surveys at

Yingkang Zhang, Ruqiu Lin, Krisztina Perger +5

Radio-loud high-redshift quasars (RHRQs) provide crucial insights into the evolution of relativistic jets and their connection to the growth of supermassive black holes. Beyond the…

astro-ph.GA2025★ 2 cited

The LMT 2 millimeter receiver system (B4R). II. Science demonstration observations toward Orion-KL/OMC-1

Teppei Yonetsu, Ryohei Kawabe, Yuki Yoshimura +26

We present the results of mapping and single-point spectral scans toward Orion-KL/OMC-1 performed as science demonstrations of a 2 mm SIS receiver, the Band 4 Receiver (B4R), insta…

astro-ph.GA2025★ 1 cited

The dark matter wake of a galactic bar revealed by multichannel Singular Spectral Analysis

Jason A. S. Hunt, Michael S. Petersen, Martin D. Weinberg +7

The Milky Way is known to contain a stellar bar, as are a significant fraction of disc galaxies across the universe. Our understanding of bar evolution, both theoretically and thro…

astro-ph.GA2025★ 1 cited

A first look at a complete view of spatially resolved star formation at 1<z<1.8 with JWST NGDEEP+FRESCO slitless spectroscopy

Jasleen Matharu, Lu Shen, Irene Shivaei +15

[abridged] The previously inaccessible star formation tracer Pa can now be spatially resolved by JWST NIRCam slitless spectroscopy in distant galaxies up to cosmic noon. In the…

astro-ph.GA2025

Isolated massive star candidates in NGC 4242 with GULP

Pietro Facchini, Eva K. Grebel, Anna Pasquali +16

There is considerable debate on how massive stars form, including whether a high-mass star must always form with a population of low-mass stars or whether it ca…

astro-ph.GA2025

An XMM-Newton View of the ANdromeda Galaxy as Explored in a Legacy Survey (New-ANGELS) II: Luminosity Function of X-ray Sources

Rui Huang, Jiang-Tao Li, Wei Cui +5

As part of the New-ANGELS program, we systematically investigate the X-ray luminosity functions (XLFs) of 4506 X-ray sources projected within a radius of 2.5 deg centering on M31.…

astro-ph.GA2025★ 1 cited

Solving the cooling flow problem with combined jet-wind AGN feedback

Aoyun He, Feng Yuan, Suoqing Ji +6

Active galactic nucleus (AGN) feedback is widely viewed as the most promising solution to the long-standing cooling flow problem in galaxy clusters, yet previous models prescribe j…

astro-ph.GA2025★ 6 cited

The JWST EXCELS Survey: gas-phase metallicity evolution at 2 < z < 8

T. M. Stanton, F. Cullen, A. C. Carnall +15

We present an analysis of the gas-phase mass-metallicity relationship (MZR) and fundamental metallicity relationship (FMR) for star-forming galaxies at from the JW…

astro-ph.GA2025

What is the True HI Gas Content in Massive Quiescent Galaxies in the Local Universe?

Xiao Li, Cheng Li, Cheng Cheng +3

While massive quiescent galaxies are known to be poor in atomic hydrogen (HI), their true HI content remains poorly constrained due to the limited sensitivity and morphological bia…