Results 121 to 130 of about 2,374,498 (256)

Kinematics of Circumgalactic Gas: Feeding Galaxies and Feedback

, 2019
We present observations of 50 pairs of redshift z ~ 0.2 star-forming galaxies and background quasars. These sightlines probe the circumgalactic medium (CGM) out to half the virial radius, and we describe the circumgalactic gas kinematics relative to the ...
Churchill, Christopher W., Ho, Stephanie H., Kacprzak, Glenn G., Martin, Crystal L.   +3 more
core   +1 more source

A Comprehensive Characterization of Galaxy-cool CGM Connections at z < 0.4 with DESI Year 1 Data

The Astrophysical Journal
We investigate the relationships between the cool circumgalactic medium (CGM), traced by Ca ii absorption lines, and galaxy properties at z  
Yu Voon Ng, Ting-Wen Lan, J. Xavier Prochaska, Amélie Saintonge, Yu-Ling Chang, Małgorzata Siudek, J. Aguilar, S. Ahlen, D. Bianchi, D. Brooks, T. Claybaugh, A. de la Macorra, A. Dey, P. Doel, S. Ferraro, J. E. Forero-Romero, E. Gaztañaga, S. Gontcho A Gontcho, G. Gutierrez, K. Honscheid, M. Ishak, S. Juneau, T. Kisner, A. Kremin, M. Landriau, L. Le Guillou, M. Manera, A. Meisner, R. Miquel, J. Moustakas, A. D. Myers, S. Nadathur, C. Poppett, I. Pérez-Ràfols, G. Rossi, E. Sanchez, D. Schlegel, M. Schubnell, H. Seo, J. Silber, G. Tarlé, B. A. Weaver, R. Zhou, H. Zou   +43 more
doaj   +1 more source

Diffuse Far-UV Line Emission from the Low-Redshift Lyman Break Galaxy Analog KISSR242

, 2010
We present new ultraviolet (UV) observations of the luminous compact blue galaxy KISSR242, obtained with the HST-COS. We identify multiple resolved sub-arcsecond near-UV sources within the COS aperture.
Barton, Burgh, Danforth, Danforth, Draine, Erb, France, Grimes, Guzmán, Kauffmann, Keel, Noeske, Overzier, Pellerin, Pettini, Pettini, Riess, Sembach, Shapley, Shapley, Sparks, Stark, Steidel, Steidel, Thilker, Thilker, Tripp, Walborn   +27 more
core   +1 more source

Characterizing the Circumgalactic Medium in Emission

, 2015
In this thesis I focus on understanding the physical properties of extended Lyman-alpha emitting gas at high redshift, from the circumgalactic medium (CGM) and intergalactic medium (IGM). First, I investigate the physics of giant, luminous Lyman-alpha nebulae known as Lyman alpha blobs (LABs).
openaire   +2 more sources

CaII and NaI absorption signatures from the circumgalactic gas of the Milky Way

, 2007
We combine CaII/NaI absorption and HI 21 cm emission line measurements to analyse the metal abundances, the distribution, the small-scale structure, and the physical conditions of intermediate- and high-velocity gas in the Galactic halo.Comment: 2 pages,
Bekhti, N. Ben, Murphy, M., Richter, P., Westmeier, T.   +3 more
core   +1 more source

Disparate effects of circumgalactic medium angular momentum in IllustrisTNG and SIMBA [PDF]

Astronomy & Astrophysics
In this study, we examine the role of the circumgalactic medium (CGM) angular momentum ($j_ CGM $) on star formation in galaxies, whose influence is currently not well understood. The analysis utilises central galaxies from two hydrodynamical simulations,
Kexin Liu, Hong Guo, Sen Wang, Da Xu, Shengdong Lu, Weiguang Cui, R. Dav'e   +6 more
semanticscholar   +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

The Dispersion Measure and Scattering of Fast Radio Bursts: Contributions from Multicomponents, and Clues for the Intrinsic Properties

The Astrophysical Journal Supplement Series
Fast radio bursts (FRBs) are luminous, millisecond-duration transients that offer great potential for probing the Universe, yet their physical origins remain unclear.
Jian-feng Mo, Weishan Zhu, Long-Long Feng   +2 more
doaj   +1 more source

The Gaseous Environment of High-z Galaxies: Precision Measurements of Neutral Hydrogen in the Circumgalactic Medium of z ~ 2-3 Galaxies in the Keck Baryonic Structure Survey

, 2012
We present results from the Keck Baryonic Structure Survey (KBSS), a unique spectroscopic survey designed to explore the connection between galaxies and intergalactic baryons. The KBSS is optimized for the redshift range z ~ 2-3, combining S/N ~ 100 Keck/
Adelberger, Adelberger, Adelberger, Adelberger, Alice E. Shapley, Becker, Becker, Brooks, Bryan, Carswell, Charles C. Steidel, Chen, Conroy, David R. Law, Davé, Dawn K. Erb, Ellison, Erb, Erb, Erb, Erb, Faucher-Giguère, Gwen C. Rudie, Hernquist, Hui, Kaiser, Kereš, Klypin, Kollmeier, Law, Law, Law, Max Pettini, McDonald, Milan Bogosavljević, Miralda-Escudé, Navarro, Naveen Reddy, Nestor, Olivera Rakic, Pettini, Pettini, Pettini, Prada, Prochaska, Rakic, Rauch, Reddy, Reddy, Reddy, Richards, Ricotti, Ryan F. Trainor, Schaye, Shapley, Shapley, Shen, Simcoe, Simcoe, Simcoe, Steidel, Steidel, Steidel, Steidel, Trainor, van de Voort, Wakker, Zhang   +67 more
core   +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