astro-ph.GA

The Open Cluster Chemical Abundances and Mapping Survey XI. First Gradients from SDSS/MWM BOSS Determined Clusters

Jonah M. Otto, Peter M. Frinchaboy, John Donor +13

Reincarnations of massive stars in active galactic nucleus discs

Jing-Tong Xing, Tong Liu, Jiao-Zhen She

The Radial Acceleration Relation in Galaxies and Clusters from a Two-Component, Virial-Motivated Framework

Christine C. Dantas, Andre L. B. Ribeiro, Hugo V. Capelato

Recovering pattern speeds of simulated face-on barred galaxies via Schwarzschild modelling

Iliya S. Tikhonenko, Jens Thomas, Roberto P. Saglia

CatBoost versus Spectral Energy Distribution-Fitting: Estimating Galaxy Properties under Controlled Photometric Incompleteness

Vahid Asadi, Hosein Haghi, Akram Hasani Zonoozi

ROLLIN': Rotating globular cluster simulations II. The complex morphology of globular clusters driven by multi-scale dynamics

Arn Marklund, Paolo Bianchini, Anna Lisa Varri +2

The TOP-SCOPE Survey of Planck Galactic Cold Clumps: Molecular gas properties

Yuebin Yang, Jarken Esimbek, Tie Liu +11

A Massive Galaxy at the Edge of Feedback-Free Efficiency

K. Aditya, Kartick C. Sarkar

Searching for Population III stars with line intensity mapping cross-correlations

Sahil Hegde, Guochao Sun, Julian B. Muñoz +1

Misaligned or chaotic? A strong break of axial symmetry in the local LRD J1025 revealed with VLT/FORS2 spectropolarimetry

Francesco D'Eugenio, Gabriele Pezzulli, Roberto Maiolino +18

Quiescent Host Galaxies of Extended Quasars Revealed by Spectrophotometric Decomposition

Shengxiu Sun, Linhua Jiang, Zhiwei Pan +27

Changing-Look AGNs from DESI. VI. Host Galaxies

Shengxiu Sun, Linhua Jiang, Wei-Jian Guo +2

Fishing for Jellyfish Galaxies: Exploring ram-pressure stripping with crowd science

C. Bellhouse, Y. L. Jaffé, J. P. Crossett +13

SDSS-V Local Volume Mapper (LVM): The Integrated Light and Internal Rotation of Omega Centauri

Maximilian Häberle, Dmitry Bizyaev, Alina Boecker +34

EWOCS-VIII: Internal kinematics and expansion of Westerlund 1 from VVVX proper motions

C. Ordenes-Huanca, A. Bayo, M. Guarcello +12

Determining Total Infrared Luminosities from Submm Measurements of High Redshift Galaxies

Maria Emilia De Rossi, George H. Rieke, Christina C. Williams +6

Angular Momentum Evolution from Core to Disk Scales in the Early Phase of Star Formation: Constraints from HH 212, HH 211, and B335

Chin-Fei Lee

The paper examines how specific angular momentum changes from large core scales down to disk scales in three young protostars, showing that an inside‑out collapse model with modest…

The eROSITA X-ray luminosity function of active galactic nuclei

W. Roster, J. Buchner, M. Salvato +23

The paper measures the soft X‑ray luminosity function of active galactic nuclei using eROSITA data across a wide luminosity and redshift range, introduces a redshift‑dependent brok…

A search for HI absorption in distant star-forming galaxies with ASKAP-FLASH - II. Direct observations and stacking of 21 cm line

Sophie L. Eden, Elaine M. Sadler, Kevin A. Pimbblet +5

The authors use ASKAP's FLASH survey to search for HI 21 cm absorption in star‑forming and radio galaxies at 0.4 < z < 1, reporting a new detection and performing stacking analyses…

Characterizing the disruption of Böotes III: a missing link in the Galactic halo?

Jaclyn Jensen, Daniel A. Boyea, Alan W. McConnachie +14

The authors investigate whether the Boötes III dwarf galaxy is the source of the Styx stellar stream by searching for tidal debris with Gaia data, new CaHK imaging, and matched‑fil…

Invariant manifolds in barred galaxy simulations. III. Self-regulated weakening of strong spiral arms

T. Soler-Terricabras, S. Roca-Fà brega, M. Romero-Gómez

The paper investigates why strong spiral arms in barred galaxies weaken, showing that self‑gravitating spirals shift the galaxy’s Lagrangian points, disrupting invariant‑manifold d…

JWST's Constraints on the Substellar IMF in NGC 2024

K. L. Luhman

The paper uses JWST NIRCam imaging and NIRSpec spectroscopy to identify brown dwarfs in the young cluster NGC 2024 and assesses whether the substellar initial mass function shows a…

Bipolar HII regions Produced by Cloud-Cloud Collisions

Theotokis Georgatos, Anthony P. Whitworth, Richard Wünsch +1

The authors run numerical simulations of head‑on collisions between 500 M⊙ clouds and show that the resulting shock‑compressed layer can produce bipolar H II regions, suggesting ma…

Galactic HII regions in LAMOST Medium-Resolution Spectroscopic Survey of Nebulae

Yunning Zhao, Wei Zhang, Lin Ma +10

The paper uses LAMOST medium‑resolution spectra to confirm 255 Galactic H II regions in the outer Milky Way and measures their electron temperature, density, and oxygen abundance t…