Results 21 to 30 of about 10,836 (194)
The Astrophysical Journal Letters, 2023 The launch of JWST opens a new window for studying the connection between metal-line absorbers and galaxies at the end of the Epoch of Reionization.
Yunjing Wu +29 more
doaj +1 more source
A SINFONI Integral Field Spectroscopy Survey for Galaxy Counterparts to Damped Lyman-alpha Systems - VI. Metallicity and Geometry as Gas Flow Probes [PDF]
, 2016 The use of background quasars provides a powerful tool to probe the cool gas in the circum-galactic medium of foreground galaxies. Here, we present new observations with SINFONI and X-Shooter of absorbing-galaxy candidates at z=0.7-1.
Contini, Thierry +9 more
core +6 more sources
The Astrophysical Journal Supplement Series, 1997 We have obtained a high signal-to-noise (30 ? S/N ? 70), high-resolution (FWHM = 20 km s-1) spectrum of the radio-quiet QSO HS 1700+6416 (zem = 2.72) with the echelle spectrograph on the Kitt Peak National Observatory 4 m telescope. We detect 13 metal systems in the optical spectrum of this QSO, including six systems with associated optically thin ...
Todd M. Tripp, Limin Lu, Blair D. Savage
openaire +1 more source
The Astrophysical Journal, 2023 Broad absorption line quasars are actively accreting supermassive black holes that have strong outflows characterized by broad absorption lines in their rest-UV spectra.
Kaylie S. Green +7 more
doaj +1 more source
, 2012 2 pages, 2 figures, Conference proceedings for "AGN Winds in Charleston," Charleston, SC, Oct 15-18, 2011.
Haggard, Daryl +4 more
openaire +2 more sources
Discovery of Broad Soft X-ray Absorption Lines from the Quasar Wind in PDS 456 [PDF]
, 2016 High resolution soft X-ray spectroscopy of the prototype accretion disk wind quasar, PDS 456, is presented. Here, the XMM-Newton RGS spectra are analyzed from the large 2013-2014 XMM-Newton campaign, consisting of 5 observations of approximately 100 ks ...
Behar, Ehud +7 more
core +2 more sources
The Astrophysical Journal, 2002 A Keck echelle spectrum of the quasar FBQS 0840+3633 reveals outflowing gas that gives rise to blueshifted absorption lines of many low-ionization species. The gas covers a range of velocities from -700 to -3500 km s-1, with two main components centered at -900 and -2800 km s-1.
Martijn de Kool +4 more
openaire +1 more source
, 2014 We report the identification of an unusual absorption line system in the quasar SDSS J080248.18$+$551328.9 and present a detailed study of the system, incorporating follow-up optical and NIR spectroscopy.
Ge, Jian +13 more
core +1 more source
Lens Galaxy Properties of SBS1520+530: Insights from Keck Spectroscopy and AO Imaging [PDF]
, 2007 We report on an investigation of the SBS 1520+530 gravitational lens system and its environment using archival HST imaging, Keck spectroscopic data, and Keck adaptive-optics imaging.
Auger M. W. +9 more
core +2 more sources
Reacceleration of a C iv Broad Absorption Line in Quasar SDSS J083817.00+295526.5
The Astrophysical JournalWe present a rare signature of reacceleration in a C iv broad absorption line (BAL) of the quasar SDSS J083817.00+295526.5. This quasar showcases three distinct BAL systems, labeled as systems A, B, and C.
Ying-Ru Lin, Wei-Jian Lu
doaj +1 more source