Results 1 to 10 of about 365 (183)
DESI z ≳ 5 Quasar Survey. I. A First Sample of 400 New Quasars at z ∼ 4.7–6.6
The Astrophysical Journal Supplement Series, 2023 We report the first results of a high-redshift ( z ≳ 5) quasar survey using the Dark Energy Spectroscopic Instrument (DESI). As a DESI secondary target program, this survey is designed to carry out a systematic search and investigation of quasars at 4.8 <
Jinyi Yang +41 more
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The Astrophysical Journal Letters, 2023 We report on the discovery of a rare case of spatially and kinematically resolved galactic-scale outflow at intermediate redshift based on VLT/MUSE optical integral field spectroscopic observation of the quasar HE 0238–1904.
Qinyuan Zhao, Junfeng Wang
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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
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The Astrophysical Journal Supplement Series, 2023 We report the fourth installment in the series of the Large Sky Area Multi-Object Fiber Spectroscopic Telescope (LAMOST) quasar survey, which includes quasars observed between 2017 September and 2021 June.
Jun-Jie Jin +12 more
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New Constraints on Quasar Broad Absorption and Emission Line Regions from Gravitational Microlensing
Frontiers in Astronomy and Space Sciences, 2017 Gravitational microlensing is a powerful tool allowing one to probe the structure of quasars on sub-parsec scale. We report recent results, focusing on the broad absorption and emission line regions.
Damien Hutsemékers +4 more
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The Astrophysical Journal, 2022 We analyze Very Large Telescope/UVES observations of the quasar SDSS J024221.87+004912.6. We identify four absorption outflow systems: a C iv broad absorption line (BAL) at v ≈ −18,000 km s ^−1 and three narrower low-ionization systems with centroid ...
Doyee Byun, Nahum Arav, Patrick B. Hall
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The Nature of LoBAL QSOs. II. HST/WFC3 Observations Reveal Host Galaxies Dominated by Mergers
The Astrophysical Journal, 2023 Low-ionization broad absorption line QSOs (LoBALs) are suspected to be merging systems in which extreme, active galactic nucleus-driven outflows have been triggered.
Mariana S. Lazarova +6 more
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The Astrophysical Journal, 2023 Narrow-line Seyfert 1 (NLS1) galaxies are an important type of active galactic nucleus (AGN), generally expected to be accreting at a high Eddington rate. The properties of their outflows and importance of AGN feedback remain intriguing. We report on the
Xiao-Dan Fu +3 more
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SDSS J090152.05+624342.6: A NEW “OVERLAPPING-TROUGH” FeLoBAL QUASAR AT Z ~ 2
Frontiers in Astronomy and Space Sciences, 2017 We here report an identification of SDSS J090152.04+624342.6 as a new “overlapping-trough” iron low-ionization broad absorption line quasar at redshift of z ~ 2.1.
Jing Wang +5 more
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The Astrophysical Journal Letters, 2023 We report the discovery of COOL J0335−1927, a quasar at z = 3.27 lensed into three images with a maximum separation of 23.″3 by a galaxy cluster at z = 0.4178. To date, this is the highest redshift wide-separation lensed quasar known.
Kate Napier +20 more
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