Results 11 to 20 of about 544 (157)

The Study of the Circumgalactic Medium with Quasar Pairs

The Astrophysical Journal Supplement Series, 2023
We have collected 10,025 foreground–background quasar pairs with projected distances d _p < 500 kpc from the large quasar catalog of the Sloan Digital Sky Survey DR16Q. We investigate the properties of the Mg ii absorption lines with W _r > 0.15 Å around
Zhi-Fu Chen, Huan-Chang Qin, Jin-Ting Cai, Yu-Tao Zhou, Zhe-Geng Chen, Ting-Ting Pang, Zhi-Wen Wang, Kang-Fa Cheng   +7 more
doaj   +3 more sources

The Anisotropic Circumgalactic Medium of Sub-L* Galaxies

The Astrophysical Journal
Using stacked emission-line flux measurements of cool circumgalactic gas (CGM) in lower-mass galaxies (10 ^9.0 ≤ M _* / M _⊙ ≤ 10 ^10.2 ), we measure the dependence of the emission characteristics on orientation relative to the disk plane as a function ...
Huanian Zhang, Miao Li, Dennis Zaritsky
doaj   +3 more sources

The Truncated Circumgalactic Medium of the Large Magellanic Cloud

The Astrophysical Journal Letters
The Large Magellanic Cloud (LMC) is the nearest massive galaxy to the Milky Way (MW). Its circumgalactic medium (CGM) is complex and multiphase, containing both stripped H i structures like the Magellanic Stream and Bridge and a diffuse warm corona seen ...
Sapna Mishra, Andrew J. Fox, Dhanesh Krishnarao, Scott Lucchini, Elena D’Onghia, Frances H. Cashman, Kathleen A. Barger, Nicolas Lehner, Jason Tumlinson   +8 more
doaj   +3 more sources

Properties of the simulated circumgalactic medium [PDF]

Monthly Notices of the Royal Astronomical Society, 2020
ABSTRACT The circumgalactic medium (CGM) is closely linked to galaxy formation and evolution, but difficult to characterize observationally and typically poorly resolved in cosmological simulations. We use spherically symmetric, idealized, high-resolution simulations of the CGM in $10^{12}$ and $10^{11}\, \mathrm{M}_\odot$ dark matter ...
Cassandra Lochhaas, Greg L Bryan, Yuan Li, Miao Li, Drummond Fielding   +4 more
openaire   +2 more sources

THE IMPACT OF STARBURSTS ON THE CIRCUMGALACTIC MEDIUM [PDF]

The Astrophysical Journal, 2013
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 spectroscopic data from the Cosmic Origin Spectrograph (COS) probing the CGM of 20 low-redshift foreground ...
Borthakur, Sanchayeeta; Heckman, Timothy; Strickland, David; Wild, Vivienne; Schiminovich, David   +5 more
openaire   +4 more sources

The low-redshift circumgalactic medium in simba [PDF]

Monthly Notices of the Royal Astronomical Society, 2021
ABSTRACT We examine the properties of the low-redshift circumgalactic medium (CGM) around star-forming and quenched galaxies in the simba cosmological hydrodynamic simulations, focusing on comparing H i and metal line absorption to observations from the Cosmic Origins Spectrograph (COS)-Halos and COS-Dwarfs surveys. Halo baryon fractions
Sarah Appleby, Romeel Davé, Daniele Sorini, Kate Storey-Fisher, Britton Smith   +4 more
openaire   +3 more sources

THE INFLUENCE OF ENVIRONMENT ON THE CIRCUMGALACTIC MEDIUM [PDF]

The Astrophysical Journal, 2013
The effect of environment on the circumgalactic medium (CGM) is investigated through a comparison of Lya absorption line data in the Virgo Cluster and the field. This Letter uses the first systematic survey of background QSOs in and around the Virgo Cluster and large existing surveys of galaxies at low redshift. While previous studies found denser gas (
Yoon, Joo Heon, Putman, Mary
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Magnetizing the circumgalactic medium of disc galaxies [PDF]

Monthly Notices of the Royal Astronomical Society, 2020
ABSTRACT The circumgalactic medium (CGM) is one of the frontiers of galaxy formation and intimately connected to the galaxy via accretion of gas on to the galaxy and gaseous outflows from the galaxy. Here, we analyse the magnetic field in the CGM of the Milky Way-like galaxies simulated as part of the auriga project that constitutes a ...
Rüdiger Pakmor, Freeke van de Voort, Rebekka Bieri, Facundo A Gómez, Robert J J Grand, Thomas Guillet, Federico Marinacci, Christoph Pfrommer, Christine M Simpson, Volker Springel   +9 more
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Enriching the hot circumgalactic medium [PDF]

Monthly Notices of the Royal Astronomical Society, 2013
Models of galaxy formation in a CDM universe predict that massive galaxies are surrounded by a hot, quasi-hydrostatic circumgalactic corona of slowly cooling gas, predominantly accreted from the IGM. This prediction is borne out by the cosmological hydrodynamical simulations of Crain et al., which reproduce scaling relations between the X-ray and ...
Crain, R.A., McCarthy, I.G., Schaye, J., Theuns, Tom, Frenk, C.S.   +4 more
openaire   +6 more sources

Project AMIGA: The Circumgalactic Medium of Andromeda* [PDF]

The Astrophysical Journal, 2020
Abstract Project AMIGA (Absorption Maps In the Gas of Andromeda) is a survey of the circumgalactic medium (CGM) of Andromeda (M31,  ≃ 300 kpc) along 43 QSO sightlines at impact parameters 25 ≤ R ≤ 569 kpc (25 at R ≲ 
Nicolas Lehner, Samantha C. Berek, J. Christopher Howk, Bart P. Wakker, Jason Tumlinson, Edward B. Jenkins, J. Xavier Prochaska, Ramona Augustin, Suoqing Ji, Claude-André Faucher-Giguère, Zachary Hafen, Molly S. Peeples, Kat A. Barger, Michelle A. Berg, Rongmon Bordoloi, Thomas M. Brown, Andrew J. Fox, Karoline M. Gilbert, Puragra Guhathakurta, Jason S. Kalirai, Felix J. Lockman, John M. O’Meara, D. J. Pisano, Joseph Ribaudo, Jessica K. Werk   +24 more
openaire   +3 more sources