Results 61 to 70 of about 5,245 (177)
Emission line ratios for the Circumgalactic Medium and the "Bimodal" Nature of Galaxies
, 2018 We find significantly different diagnostic emission line ratios for the circumgalactic gas associated with galaxies of stellar masses above and below $10^{10.4}$ M$_\odot$ using SDSS spectroscopy. Specifically, in a sample of 17,393 galaxies, intersected
Behroozi, Peter +3 more
core +1 more source
The Astrophysical JournalWe investigate the coevolution of the angular momentum of Milky Way–like galaxies, their circumgalactic gas, and their dark matter halos using zoom-in simulations from the Figuring Out Gas and Galaxies in Enzo suite.
Raymond C. Simons +12 more
doaj +1 more source
The circumgalactic medium in Lyman-alpha: a new constraint on galactic outflow models [PDF]
, 2019 Galactic outflows are critical to our understanding of galaxy formation and evolution. However the details of the underlying feedback process remain unclear.
Chung, Andrew S. +4 more
core +2 more sources
Gas Kinematics in the Multiphase Circumgalactic Medium [PDF]
Proceedings of the International Astronomical Union, 2016 AbstractWe use high-resolution Keck, VLT, or Hubble Space Telescope spectra of background quasars to examine the kinematic properties of the multiphase, metal-enriched circumgalactic medium in the outskirts of galaxies at 0.08 < zgal < 1.0, focusing on the low-ionization Mgii and high-ionization Ovi doublets.
Nikole M. Nielsen +6 more
openaire +1 more source
This is a pre-print of a chapter for the Encyclopedia of Astrophysics (edited by I. Mandel, section editor S.
Chen, Hsiao-Wen, Zahedy, Fakhri S.
openaire +2 more sources
Gravitational lensing reveals ionizing ultraviolet photons escaping from a distant galaxy [PDF]
, 2019 During the epoch of reionisation, neutral gas in the early Universe was ionized by hard ultraviolet radiation emitted by young stars in the first galaxies. To do so, ionizing ultraviolet photons must escape from the host galaxy.
Bayliss, Matthew +9 more
core +1 more source
On the Origin of High-velocity Clouds in the Galaxy
The Astrophysical JournalThe origin of our Galaxy’s high-velocity clouds (HVCs) remains a mystery after many decades of effort. In this paper, we use the TNG50 simulation of the IllustrisTNG project to identify cool, dense clouds that match observations of Galactic H i HVCs.
Scott Lucchini +3 more
doaj +1 more source
The impact of galactic feedback on the circumgalactic medium [PDF]
Monthly Notices of the Royal Astronomical Society, 2015 17 pages, 12 figures, accepted to ...
Suresh, Joshua +7 more
openaire +5 more sources
The Astrophysical JournalWe present a study of O vi -bearing gas around 247 low-mass (median ${\mathrm{log}}_{10}({M}_{\star }/{M}_{\odot })$ = 8.7) galaxies at low redshifts (0.1 < z < 0.7) using background quasars as part of the MUSE Quasar-fields Blind Emitters Survey ...
Sayak Dutta +6 more
doaj +1 more source
Outskirts of Distant Galaxies In Absorption
, 2016 QSO absorption spectroscopy provides a sensitive probe of both the neutral medium and diffuse ionized gas in the distant Universe. It extends 21cm maps of gaseous structures around low-redshift galaxies both to lower gas column densities and to higher ...
A.H. Broeils +19 more
core +1 more source