Results 81 to 90 of about 544 (157)

Analytical Framework for Expanding Bubbles in a Hot Circumgalactic Medium

The Astrophysical Journal
We develop an analytic framework for the evolution of feedback-driven bubbles expanding into a hot, volume-filling circumgalactic medium (CGM), where the ambient pressure and sound speed are non-negligible and radiative cooling is often inefficient.
Jiang-Tao Li
doaj   +1 more source

The Signatures of Density Fluctuations and Mixing Gas in Circumgalactic Absorption Systems

The Astrophysical Journal
We investigate the prospects for detecting and constraining density and temperature inhomogeneities in the circumgalactic medium using absorption measurements of metal ions.
Yakov Faerman, Daniel R. Piacitelli, Matthew McQuinn, Jessica K. Werk   +3 more
doaj   +1 more source

Understanding gas mixing in the circumgalactic medium

Monthly Notices of the Royal Astronomical Society
ABSTRACT We study gas mixing in a simulated Milky Way–mass galaxy’s circumgalactic medium (CGM) using cosmological ‘zoom-in’ simulations. We insert tracer dyes in the CGM with different gas flows (shearing, coherent, and static) and diverse physical properties to track gas mixing.
Hilay Shah, Freeke van de Voort, Amit Seta, Christoph Federrath   +3 more
openaire   +2 more sources

MUSEQuBES: Physical Conditions, Origins, and Multielement Abundances of the Circumgalactic Medium of an Isolated, Star-forming Dwarf Galaxy at z = 0.57

The Astrophysical Journal Letters
In dwarf galaxy models, outflows expel metal-enriched interstellar medium (ISM) into the circumgalactic medium (CGM) to reproduce their observed low metallicities, but measurements of dwarf CGM properties are scarce.
Sean D. Johnson, Nishant Mishra, Sowgat Muzahid, Gwen C. Rudie, Fakhri S. Zahedy, Zhijie Qu, Claude-André Faucher-Giguère, Jonathan Stern, Jennifer I-Hsiu Li, Elise Fuller, Sebastiano Cantalupo, Hsiao-Wen Chen, Ahmad Kadri, Suyash Kumar, Zhuoqi (Will) Liu, Gregory Walth   +15 more
doaj   +1 more source

DIISC-VI (COS-DIISC): Ultraviolet Metal Absorption Relative to the H i Disk of Galaxies

The Astrophysical Journal
As part of the Deciphering the Interplay between the Interstellar medium, Stars, and the Circumgalactic medium (DIISC) survey, we present the UV metal absorption features in the circumgalactic medium (CGM) near the H i gas disk (
Brad Koplitz, Sanchayeeta Borthakur, Timothy Heckman, Mansi Padave, Tyler McCabe, Jason Tumlinson, Andrew J. Fox, Guinevere Kauffmann   +7 more
doaj   +1 more source

Observations of a Magellanic Corona. [PDF]

Nature, 2022
Krishnarao D, Fox AJ, D'Onghia E, Wakker BP, Cashman FH, Howk JC, Lucchini S, French DM, Lehner N.   +8 more
europepmc   +1 more source

Improving Photometric Redshifts of Epoch of Reionization Galaxies: A New Empirical Transmission Curve with Neutral Hydrogen Damping Wing Lyα Absorption

The Astrophysical Journal Letters
We present a new analytical model for the attenuation to Epoch of Reionization (EoR) galaxies by proximate neutral hydrogen gas. Many galaxy spectra in the EoR taken by JWST have shown a flux deficit at wavelengths just redward of the Lyman break, and ...
Yoshihisa Asada, Guillaume Desprez, Chris J. Willott, Marcin Sawicki, Maruša Bradač, Gabriel Brammer, Florian Dubath, Kartheik G. Iyer, Nicholas S. Martis, Adam Muzzin, Gaël Noirot, Stéphane Paltani, Ghassan T. E. Sarrouh, Anishya Harshan, Vladan Markov   +14 more
doaj   +1 more source

FEASTS: Radial Distribution of H i Surface Densities Down to 0.01 M⊙ pc−2 of 35 Nearby Galaxies

The Astrophysical Journal
We present the H i surface density (Σ _H _i ) radial distributions based on total-power H i images obtained by FAST in the FEASTS program, for 35 galaxies with inclinations lower than 72°.
Jing Wang, Dong Yang, Xuchen Lin, Qifeng Huang, Zhijie Qu, Hsiao-wen Chen, Hong Guo, Luis C. Ho, Peng Jiang, Zezhong Liang, Céline Péroux, Lister Staveley-Smith, Simon Weng   +12 more
doaj   +1 more source

Considering light-matter interactions in the Friedmann equations. [PDF]

Proc Math Phys Eng Sci, 2022
Vavryčuk V.
europepmc   +1 more source

The Circumgalactic Medium Traced by Mg ii Absorption with DESI: Dependence on Galaxy Stellar Mass, Star Formation Rate, and Azimuthal Angle

The Astrophysical Journal
Understanding the circumgalactic medium (CGM) distribution of galaxies is the key to revealing the dynamical exchange of materials between galaxies and their surroundings.
Zeyu Chen, Enci Wang, Hu Zou, Siwei Zou, Yang Gao, Huiyuan Wang, Haoran Yu, Cheng Jia, Haixin Li, Chengyu Ma, Yao Yao, Weiyu Ding, Runyu Zhu   +12 more
doaj   +1 more source