Results 101 to 110 of about 5,245 (177)

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

Constraining Reionization with Lyman Alpha Emitting Galaxies

, 2015
Neutral diffuse intergalactic gas that existed during the Epoch of Reionization (EoR) suppresses Lyman Alpha (Lya) flux emitted by background galaxies.
Dijkstra, Mark
core   +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

Phosphorus-bearing molecules PO and PN at the edge of the Galaxy. [PDF]

Nature, 2023
Koelemay LA, Gold KR, Ziurys LM.
europepmc   +1 more source

The Large, Oxygen-Rich Halos of Star-Forming Galaxies Are A Major Reservoir of Galactic Metals

, 2011
The circumgalactic medium (CGM) is fed by galaxy outflows and accretion of intergalactic gas, but its mass, heavy element enrichment, and relation to galaxy properties are poorly constrained by observations.
A. B. Ford, B. D. Oppenheimer, C. Thom, D. H. Weinberg, J. D. Meiring, J. K. Werk, J. M. O'Meara, J. Tumlinson, J. X. Prochaska, K. R. Sembach, Lehner, M. S. Peeples, N. S. Katz, R. Dave, T. M. Tripp, Tripp, Tripp   +16 more
core   +1 more source

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

The origin of cold gas in the circumgalactic medium

Astronomy & Astrophysics
Context. The presence of cold gas (T ≲ 104 K) in the circumgalactic medium (CGM) of galaxies has been confirmed in observations and in high-resolution simulations, but its origin is still a puzzle. Possible mechanisms are cold accretion from the intergalactic medium (IGM), clumps embedded in outflows and transported from the disk, and gas detaching ...
Decataldo, Davide, Shen, Sijing, Mayer, Lucio, Baumschlager, Bernhard, Madau, Piero   +4 more
openaire   +4 more sources

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

Mapping the z ∼ 2 Circumgalactic Medium with KBSS Galaxy Pairs

The Astrophysical Journal
We present new results on the spatial structure and kinematics of the circumgalactic medium (CGM) of z  ∼ 2 star-forming galaxies drawn from the Keck Baryonic Structure Survey, using Ly α and metallic ion absorption recorded in spectra of background ...
Nikolaus Z. Prusinski, Charles C. Steidel, Yuguang Chen   +2 more
doaj   +1 more source

Accretion-Driven Turbulence in the Circumgalactic Medium

20 pages, 14 figures, submitted to ...
Goldner, Roy, Stern, Jonathan, Fielding, Drummond, Faucher-Giguère, Claude-André, Faerman, Yakov, Kakoly, Aharon   +5 more
openaire   +2 more sources