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Related papers: The multiphase circumgalactic medium and its relat…

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Precipitation is potentially a mechanism through which the circumgalactic medium (CGM) can regulate a galaxy's star formation. Here we present idealized simulations of isolated Milky Way-like galaxies intended to examine the ability of…

Astrophysics of Galaxies · Physics 2025-06-26 Claire Kopenhafer , Brian W. O'Shea , G. Mark Voit

We present an analysis of the physical and dynamical states of two sets of EAGLE zoom simulations of galaxy haloes, one at high redshift ($z=2-3$) and the other at low redshift ($z=0$), with masses of $\approx 10^{12} M_{\odot}$. Our focus…

Astrophysics of Galaxies · Physics 2020-10-21 Ezra Huscher , Benjamin D. Oppenheimer , Alice Lonardi , Robert A. Crain , Alexander J. Richings , Joop Schaye

Using high-resolution {\sc Romulus} simulations, we explore the origin and evolution of the circumgalactic medium (CGM) in the region 0.1 $\leq \mathrm{R}/\mathrm{R}_\mathrm{500} \leq$ 1 around massive central galaxies in group-scale halos.…

This paper examines how the circumgalactic medium (CGM) evolves as a function of time by comparing results from different absorption-line surveys that have been conducted in the vicinities of galaxies at different redshifts. Despite very…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-11 Hsiao-Wen Chen

Dwarf galaxies are uniquely sensitive to energetic feedback processes and are known to experience substantial mass and metal loss from their disk. Here, we investigate the circumgalactic medium (CGM) of 64 isolated dwarf galaxies…

The circumgalactic medium (CGM) plays a vital role in galaxy evolution, however, studying the emission from CGM is challenging due to its low surface brightness and the complexities involved in interpreting resonant lines such as…

The circumgalactic medium (CGM), as the gas repository for star formation, might contain the answer to the mysterious galaxy quenching and bimodal galaxy population origin. We measured the X-ray emission of the hot CGM around star-forming…

The bulk of cosmic matter resides in a dilute reservoir that fills the space between galaxies, the intergalactic medium (IGM). The history of this reservoir is intimately tied to the cosmic histories of structure formation, star formation,…

Cosmology and Nongalactic Astrophysics · Physics 2016-10-05 Matthew McQuinn

We explore the multiphase structure of the circumgalactic medium (CGM) probed by synthetic spectra through a cosmological zoom-in galaxy formation simulation. We employ a Bayesian method for modelling a combination of absorption lines to…

Astrophysics of Galaxies · Physics 2018-07-11 Cameron Liang , Andrey Kravtsov , Oscar Agertz

Galaxies are surrounded by sizeable gas reservoirs which host a significant amount of metals: the circum-galactic medium (CGM). The CGM acts as a mediator between the galaxy and the extra-galactic medium. However, our understanding of how…

Astrophysics of Galaxies · Physics 2018-01-22 Maan H. Hani , Martin Sparre , Sara L. Ellison , Paul Torrey , Mark Vogelsberger

The circumgalactic medium (CGM) around massive galaxies plays a crucial role in regulating star formation and feedback. Using the CAMELS simulation suite, we develop emulators for the X-ray surface brightness profile and the X-ray…

Most of a galaxy's mass is located out to hundreds of kiloparsecs beyond its stellar component. This diffuse reservoir of gas, the circumgalactic medium (CGM), acts as the interface between a galaxy and the cosmic web that connects…

Feedback is indispensable in galaxy formation. However, lacking resolutions, cosmological simulations often use ad hoc feedback parameters. Conversely, small-box simulations, while better resolving the feedback, cannot capture gas evolution…

Astrophysics of Galaxies · Physics 2020-08-12 Miao Li , Stephanie Tonnesen

(Abridged) This paper presents an absorption-line study of the multiphase circumgalactic medium (CGM) based on observations of Lya, CII, CIV, SiII, SiIII, and SiIV absorption transitions in the vicinities of 195 galaxies at redshift…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-18 Cameron Jia Liang , Hsiao-Wen Chen

The circumgalactic medium (CGM) is the most massive baryonic component of a spiral galaxy, shock heated to about $10^6$K for an $\rm L^{\star}$ galaxy. The CGM of the Milky Way has been well-characterized through X-ray absorption line…

Astrophysics of Galaxies · Physics 2023-06-28 Smita Mathur , Sanskriti Das , Anjali Gupta , Yair Krongold

Dwarf galaxies are thought of as the building blocks of large galaxies such as our Milky Way. This paper presents new high-resolution hydrodynamical simulations of dwarf galaxies and their intergalactic medium with the \texttt{GIZMO} code.…

Astrophysics of Galaxies · Physics 2025-06-06 Pei-Cheng Tung , Ke-Jung Chen

We present a study exploring the impact of a starburst on the properties of the surrounding circum-galactic medium (CGM): gas located beyond the galaxy's stellar body and extending out to the virial radius (200 kpc). We obtained ultraviolet…

Cosmology and Nongalactic Astrophysics · Physics 2014-09-16 Sanchayeeta Borthakur , Timothy Heckman , David Strickland , Vivienne Wild , David Schiminovich

The cold interstellar medium (ISM) plays a central role in the galaxy evolution process. It is the reservoir that fuels galaxy growth via star formation, the repository of material formed by these stars, and a sensitive tracer of internal…

Astrophysics of Galaxies · Physics 2022-09-07 Amelie Saintonge , Barbara Catinella

The hot ($>10^6$ K) phase of the circumgalactic medium (CGM) contains a large fraction of baryons in galaxies. It also retains signatures of the processes that shaped the galaxies, such as feedback from active galactic nuclei (AGNs) and…

Astrophysics of Galaxies · Physics 2022-09-08 Urmila Chadayammuri , Akos Bogdan , Benjamin Oppenheimer , Ralph Kraft , William Forman , Christine Jones

The evolution of galaxies is largely affected by exchanging material with their close environment, the circumgalactic medium (CGM). In this work, we investigate the CGM and the interstellar medium (ISM) of the bright central galaxy (BCG) of…

Astrophysics of Galaxies · Physics 2024-06-17 L. Ghodsi , J. Zhou , P. Andreani , C. De Breuck , A. W. S. Man , Y. Miyamoto , T. G. Bisbas , A. Lundgren , Z. -Y. Zhang
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