Results 21 to 30 of about 1,565,970 (180)

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

Key Physical Processes in the Circumgalactic Medium [PDF]

Annual Review of Astronomy and Astrophysics, 2023
Spurred by rich, multiwavelength observations and enabled by new simulations, ranging from cosmological to subparsec scales, the past decade has seen major theoretical progress in our understanding of the circumgalactic medium (CGM). We review key physical processes in the CGM. Our conclusions include the following: ▪The properties of the CGM depend on
Faucher-Giguere, Claude-Andre, Oh, S. Peng   +1 more
openaire   +3 more sources

The MUSECuBES surveys on the circumgalactic medium

, 2019
The circumgalactic medium (CGM) is a dynamic, complex, multiphase, metal-enriched gas reservoir surrounding galaxies which harbors gas and metal masses comparable to those in galaxies themselves. Using a large quantity of spectral and imaging data obtained with MUSE & UVES on the VLT and ACS & COS on-board HST, we have started a major campaign ...
Muzahid, Sowgat (6471758), Muzahid, Sowgat   +1 more
openaire   +3 more sources

Understanding gas mixing in the circumgalactic medium [PDF]

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   +3 more sources

Making the Deepest Images of the Circumgalactic Medium

Proceedings of the International Astronomical Union
Abstract The aim of this research is to utilise data from the IMAGINE survey to probe deeper into the circumgalactic medium (CGM) of spiral galaxy NGC7424 and identify large scale HI structures using the high column densities achievable with ATCA.
Tasmiyah Rawoot, D.J. Pisano
openaire   +2 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 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
openaire   +2 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

MUSE-ALMA Halos XI: Gas flows in the circumgalactic medium [PDF]

, 2023
The flow of gas into and out of galaxies leaves traces in the circumgalactic medium which can then be studied using absorption lines towards background quasars. We analyse 27 log(N_HI) > 18.0 HI absorbers at z = 0.2 to 1.4 from the MUSE-ALMA Halos survey
Glenn G Kacprzak, Fox, Andrew J., Szakacs, Roland, Nelson, D., Hayes, Matthew J.,, Weng, S., Hayes, M., Simon Weng, Kacprzak, Glenn G., Bollo, V., Karki, A., Dylan Nelson, Karki, Arjun, Arjun Karki, Martin Zwaan, Hamanowicz, Aleksandra, Kulkarni, V., Ramona Augustin, Zwaan, Martin, Matthew J Hayes, Péroux, C., Casavecchia, B., Szakacs, R., Kacprzak, G., Casavecchia, Benedetta, Benedetta Casavecchia, Hamanowicz, A., Hayes, Matthew J., Varsha P Kulkarni, Andrew J Fox, Augustin, R., Zwaan, M., Péroux, Céline, Roland Szakacs, Sadler, E., Victoria Bollo, Kulkarni, Varsha P., Bollo, Victoria, Aleksandra Hamanowicz, Augustin, Ramona, Weng, Simon, Céline Péroux, Sadler, Elaine M., Elaine M Sadler, Fox, A., Nelson, Dylan   +45 more
core   +1 more source