Results 1 to 10 of about 765,605 (153)
Statistics of Galactic-scale Quasar Pairs at Cosmic Noon [PDF]
The Astrophysical Journal, 2023 The statistics of galactic-scale quasar pairs can elucidate our understanding of the dynamical evolution of supermassive black hole (SMBH) pairs, the duty cycles of quasar activity in mergers, or even the nature of dark matter, but they have been ...
Yue Shen +10 more
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A Survey for High-redshift Gravitationally Lensed Quasars and Close Quasar Pairs. I. The Discoveries of an Intermediately Lensed Quasar and a Kiloparsec-scale Quasar Pair at z ∼ 5 [PDF]
The Astronomical Journal, 2023 We present the first results from a new survey for high-redshift ( z ≳ 5) gravitationally lensed quasars and close quasar pairs. We carry out candidate selection based on the colors and shapes of objects in public imaging surveys, then conduct follow-up ...
Minghao Yue +3 more
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Rapidly Star-Forming Galaxies Adjacent to Quasars at Redshifts Exceeding 6 [PDF]
Nature, 2017 Roberto Decarli +2 more
exaly +2 more sources
Detection of the Low-stellar-mass Host Galaxy of a z ∼ 6.25 Quasar with JWST
The Astrophysical Journal, 2023 We characterize the stellar mass of J2239+0207, a z ∼ 6.25 sub-Eddington quasar ( M _1450 = −24.6), using dedicated JWST/NIRCam medium-band observations of a nearby point-spread function star to remove the central point source and reveal the underlying ...
Meredith A. Stone +3 more
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The Study of the Circumgalactic Medium with Quasar Pairs
The Astrophysical Journal Supplement Series, 2023 We have collected 10,025 foreground–background quasar pairs with projected distances d _p < 500 kpc from the large quasar catalog of the Sloan Digital Sky Survey DR16Q. We investigate the properties of the Mg ii absorption lines with W _r > 0.15 Å around
Zhi-Fu Chen +7 more
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The Astrophysical Journal, 2023 The recent discovery of enormous Ly α nebulae (ELANe), characterized by physical extents >200 kpc and Ly α luminosities >10 ^44 erg s ^−1 , provides a unique opportunity to study the intergalactic medium and circumgalactic medium in distant galaxies ...
Jessica S. Li +10 more
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DPQP: A Detection Pipeline for Quasar Pair Candidates Based on QSO Photometric Images and Spectra
Universe, 2023 Quasars have an important role in the studies of galaxy evolution and star formation. The rare close projection of two quasars in the sky allows us to study the environment and matter exchange around the foreground quasar (QSOfg) and the background ...
Yuanbo Liu +6 more
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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
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The Astrophysical Journal, 2023 We present emission-line measurements and physical interpretations for a sample of 117 [O iii ] emitting galaxies at z = 5.33–6.93, using the first deep JWST/NIRCam wide-field slitless spectroscopic observations.
Jorryt Matthee +6 more
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Search for quasar pairs with Gaia astrometric data
Astronomy & AstrophysicsQuasar pairs, a special subclass of galaxy pairs, are valuable in the investigation of quasar interaction and clustering, the coevolution between the two quasars’ host galaxies, and the growth of supermassive black holes, as well as the formation and ...
Chen Qihang +7 more
doaj +3 more sources