Results 21 to 30 of about 335 (139)
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
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Discovery of Hydrogen Radio Recombination Lines at z = 0.89 toward PKS 1830-211
The Astrophysical Journal, 2023 We report the detection of stimulated hydrogen radio recombination line (RRL) emission from ionized gas in a z = 0.89 galaxy using 580–1670 MHz observations from the MeerKAT Absorption Line Survey.
Kimberly L. Emig +16 more
doaj +1 more source
DIISC-VI (COS-DIISC): Ultraviolet Metal Absorption Relative to the H i Disk of Galaxies
The Astrophysical JournalAs 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 +7 more
doaj +1 more source
AGN Feedback Efficiency of Narrow Absorption Line Quasars
The Astrophysical JournalWe consider if outflowing winds that are detected via narrow absorption lines (NALs) with FWHM of
Toru Misawa +2 more
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High Resolution Ultraviolet Quasar Absorption Line Spectroscopy of z~1 Galaxy Group
, 2002 4 pages, 1 figure, to appear in "Hubble's Science Legacy: Future Optical-Ultraviolet Astronomy from Space", eds. K.R. Sembach, J.C. Blades, G.D. Illingworth, & R.C.
openaire +2 more sources
An Extremely Metal-poor Lyα Emitter Candidate at z = 6 Revealed through Absorption Spectroscopy
The Astrophysical Journal LettersWe report the discovery of a Ly α emitter (LAE) candidate in the immediate foreground of the quasar PSO J158-14 at z _QSO = 6.0685 at a projected distance ∼29 pkpc that is associated with an extremely metal-poor absorption system.
Dominika Ďurovčíková +12 more
doaj +1 more source
The Astrophysical Journal, 2023 We present the first result in exploring the gaseous halo and galaxy correlation using the Dark Energy Spectroscopic Instrument survey validation data in the Cosmic Evolution Survey (COSMOS) and Hyper Suprime-Cam field.
Siwei Zou +25 more
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Comprehensive Connection among the Quasars with Different Types of Outflow Absorption Lines
The Astrophysical JournalIt is commonly accepted that outflows from the central regions of quasars play a substantial role in regulating the global properties of the host galaxy. These outflows are typically detected through blueshifted absorption lines.
Xing-Long Peng +4 more
doaj +1 more source
On the Metallicities and Kinematics of the Circumgalactic Media of Damped Lyα Systems at z ∼ 2.5
The Astrophysical Journal, 2023 We use medium- and high-resolution spectroscopy of close pairs of quasars to analyze the circumgalactic medium (CGM) surrounding 32 damped Ly α absorption systems (DLAs). The primary quasar sightline in each pair probes an intervening DLA in the redshift
Stephanie M. Urbano Stawinski +9 more
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