Results 61 to 70 of about 2,374,498 (256)

The COS Absorption Survey of Baryon Harbors (CASBaH): Warm-hot Circumgalactic Gas Reservoirs Traced by Ne VIII Absorption [PDF]

, 2019
We survey the highly ionized circumgalactic media (CGM) of 29 blindly selected galaxies at 0.49 < z_(gal) < 1.44 based on high-S/N ultraviolet spectra of z > 1 QSOs and the galaxy database from the COS Absorption Survey of Baryon Harbors (CASBaH).
Bordoloi, Rongmon, Bowen, David V., Burchett, Joseph N., Howk, J. Christopher, Jenkins, Edward B., Katz, Neal, Lehner, Nicolas, Meiring, Joseph D., O'Meara, John M., Peeples, Molly S., Prochaska, J. Xavier, Tejos, Nicolas, Tripp, Todd M., Tumlinson, Jason, Werk, Jessica K., Willmer, Christopher N. A.   +15 more
core   +2 more sources

The physical nature of circumgalactic medium absorbers in Simba

Monthly Notices of the Royal Astronomical Society, 2023
ABSTRACT We study the nature of the low-redshift circumgalactic medium (CGM) in the Simba  cosmological simulations as traced by ultraviolet absorption lines around galaxies in bins of stellar mass ($\mbox{$M_\star $}\, &gt; 10^{10}{\rm M}_\odot$) for star-forming, green valley and quenched galaxies at impact parameters r⊥ ≤ 1.25r200.
Sarah Appleby, Romeel Davé, Daniele Sorini, Weiguang Cui, Jacob Christiansen   +4 more
openaire   +4 more sources

High-resolution absorption spectroscopy of the circumgalactic medium of the Milky Way

, 2013
In this article we discuss the importance of high-resolution absorption spectroscopy for our understanding of the distribution and physical nature of the gaseous circumgalactic medium (CGM) that surrounds the Milky Way.
Bekhti, N. Ben, Bomans, D., Fox, A. J., Frank, S., Murphy, M. T., Richter, P.   +5 more
core   +1 more source

Regulation of Star Formation by a Hot Circumgalactic Medium

The Astrophysical Journal, 2023
Galactic outflows driven by supernovae (SNe) are thought to be a powerful regulator of a galaxy’s star-forming efficiency. Mass, energy, and metal outflows ( η _M , η _E , and η _Z , here normalized by the star formation rate, the SNe energy, and metal ...
Christopher Carr, Greg L. Bryan, Drummond B. Fielding, Viraj Pandya, Rachel S. Somerville   +4 more
doaj   +1 more source

Gas Accretion in Star-Forming Galaxies

, 2016
Cold-mode gas accretion onto galaxies is a direct prediction of LCDM simulations and provides galaxies with fuel that allows them to continue to form stars over the lifetime of the Universe.
A. B. Ford, A. Boksenberg, A. Dekel, A. Dekel, A. J. Battisti, A. M. Brooks, A. M. Diamond-Stanic, A. M. Wolfe, B. A. Keeney, B. D. Oppenheimer, B. D. Savage, B. E. Penprase, B. P. Wakker, C. C. Steidel, C. C. Steidel, C. C. Steidel, C. J. Liang, C. L. Martin, C. Péroux, C. Thom, C. W. Churchill, C. W. Churchill, C. W. Churchill, C. W. Danforth, C.-A. Faucher-Giguère, D. C. Martin, D. C. Martin, D. Kereš, D. Kereš, D. Kunth, D. V. Bowen, F. Voort van de, F. Voort van de, G. C. Rudie, G. G. Kacprzak, G. G. Kacprzak, G. G. Kacprzak, G. G. Kacprzak, G. G. Kacprzak, G. G. Kacprzak, G. G. Kacprzak, G. G. Kacprzak, G. G. Kacprzak, H. Rahmani, H.-W. Chen, H.-W. Chen, H.-W. Chen, H.-W. Chen, H.-W. Chen, H.-W. Chen, I. Schroetter, J. Bergeron, J. C. Charlton, J. C. Charlton, J. D. Meiring, J. F. Navarro, J. N. Bregman, J. N. Burchett, J. N. Burchett, J. Ribaudo, J. T. Stocke, J. T. Stocke, J. Tumlinson, J. X. Prochaska, J. X. Prochaska, J. X. Prochaska, J.-K. Krogager, K. H. R. Rubin, K. L. Adelberger, K. L. Cooksey, K. M. Lanzetta, K. R. Sembach, K. R. Stewart, K. R. Stewart, M. Danovich, M. Danovich, M. Fumagalli, M. Fumagalli, M. Fumagalli, M. Fumagalli, M. Rafelski, N. Bouché, N. Bouché, N. Bouché, N. H. M. Crighton, N. H. M. Crighton, N. H. M. Crighton, N. L. Mathes, N. Lehner, N. Lehner, N. M. Nielsen, N. M. Nielsen, N. M. Nielsen, N. M. Nielsen, N. Yoshida, P. Guillemin, P. Ocvirk, P. Richter, P. Richter, R. A. Jorgenson, R. A. Jorgenson, R. Bordoloi, R. Bordoloi, R. Bordoloi, R. Cooke, R. J. Cooke, S. Borthakur, S. Côté, S. D. Johnson, S. D. Johnson, S. L. Ellison, S. Muzahid, S. Muzahid, S. Quiret, S. Shen, S. Shen, S. Zibetti, T. Goerdt, T. J. Cooper, T. Kimm, T. M. Tripp, T. M. Tripp, T. M. Tripp, T.-W. Lan, Y. Birnboim, Y. Zheng   +125 more
core   +1 more source

Recent X-ray Observations and the Evolution of Hot Gas in Elliptical Galaxies: Evidence for Circumgalactic Gas [PDF]

, 1997
X-ray emitting gaseous halos, such as that in elliptical galaxies like NGC 4472, cannot have been produced solely from gas expelled from galactic stars.
Athanassoula E., Awaki H., Fabian A., Fabrizio Brighenti, Garciagomez C., Gunn K. F., Hattori M., Ishimaru Y., Loewenstein M., Malagoli A., Thomas P. A., Thomas P. A., Trinchieri G., van der Marel R. P., William G. Mathews   +14 more
core   +3 more sources

Key Physical Processes in the Circumgalactic Medium

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   +2 more sources

Galaxies Probing Galaxies at High Resolution: Co-Rotating Gas Associated with a Milky Way Analog at z=0.4 [PDF]

, 2015
We present results on gas flows in the halo of a Milky Way-like galaxy at z=0.413 based on high-resolution spectroscopy of a background galaxy. This is the first study of circumgalactic gas at high spectral resolution towards an extended background ...
Coil, Alison L., Diamond-Stanic, Aleksandar M., Hickox, Ryan C., Mendez, Alexander J., Moustakas, John, Rudnick, Greg H., Sell, Paul H., Tremonti, Christy A.   +7 more
core   +3 more sources

The hot circumgalactic medium in the eROSITA All-Sky Survey I. X-ray surface brightness profiles [PDF]

Astronomy & Astrophysics
The circumgalactic medium (CGM) provides the material needed for galaxy formation and influences galaxy evolution. The hot ($T>10^6K$) CGM is poorly detected around galaxies with stellar masses ($M_*$) lower than $3 M_ due to the low surface brightness.
Yi Zhang, J. Comparat, G. Ponti, A. Merloni, K. Nandra, F. Haberl, N. Locatelli, Xiaoyuan Zhang, Jeremy S. Sanders, Xueying Zheng, A. Liu, P. Popesso, Teng Liu, N. Truong, A. Pillepich, P. Predehl, M. Salvato, S. Shreeram, M. Yeung, Q. Ni   +19 more
semanticscholar   +1 more source

Probing extreme black‐hole outflows on short timescales via high spectral‐resolution x‐ray imagers

Astronomische Nachrichten, Volume 345, Issue 6-7, July-August 2024.
Abstract We investigate outflows and the physics of super‐Eddington versus sub‐Eddington regimes in black hole systems. Our focus is on prospective science using next‐generation high‐resolution soft x‐ray instruments. We highlight the properties of black hole ultraluminous x‐ray source (ULX) systems in particular. Owing to scale invariance in accreting
C. Pinto, J. F. Steiner, A. Bodaghee, P. Chakraborty, M. Sobolewska, D. R. Pasham, A. Ogorzalek, J. Zuhone, A. Bogdan, M. Vogelsberger   +9 more
wiley   +1 more source