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Constraints on Hyperluminous QSO Lifetimes via Fluorescent Lyα Emitters at Z ≃ 2.7

Trainor, Ryan and Steidel, Charles C. (2013) Constraints on Hyperluminous QSO Lifetimes via Fluorescent Lyα Emitters at Z ≃ 2.7. Astrophysical Journal Letters, 775 (1). Art. No. L3. ISSN 2041-8205. doi:10.1088/2041-8205/775/1/L3.

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We present observations of a population of Lyα emitters (LAEs) exhibiting fluorescent emission via the reprocessing of ionizing radiation from nearby hyperluminous QSOs. These LAEs are part of a survey at redshifts 2.5 < z < 2.9 combining narrow-band photometric selection and spectroscopic follow-up to characterize the emission mechanisms, physical properties, and three-dimensional locations of the emitters with respect to their nearby hyperluminous QSOs. These data allow us to probe the radiation field, and thus the radiative history, of the QSOs, and we determine that most of the eight QSOs in our sample have been active and of comparable luminosity for a time 1 Myr ≲ t_Q ≲ 20 Myr. Furthermore, we find that the ionizing QSO emission must have an opening angle θ ~ 30° or larger relative to the line of sight.

Item Type:Article
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URLURL TypeDescription Paper
Trainor, Ryan0000-0002-6967-7322
Steidel, Charles C.0000-0002-4834-7260
Additional Information:© 2013. The American Astronomical Society. Received 19 July 2013, accepted for publication 6 August 2013. Published 29 August 2013. We are indebted to the staff of the W.M. Keck Observatory who keep the instruments and telescopes running effectively. We also extend thanks to those of Hawaiian ancestry on whose sacred mountain we are privileged to be guests. This work has been supported in part by the U.S. National Science Foundation through grant AST-0908805.
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Subject Keywords:galaxies: formation; galaxies: high-redshift; quasars: general
Issue or Number:1
Record Number:CaltechAUTHORS:20131017-133655029
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Official Citation:Constraints on Hyperluminous QSO Lifetimes via Fluorescent Lyα Emitters at Z 2.7 Ryan Trainor and Charles C. Steidel 2013 ApJ 775 L3
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:41974
Deposited On:21 Oct 2013 23:15
Last Modified:10 Nov 2021 04:36

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