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Optical selection of quasars: SDSS and LSST

Published online by Cambridge University Press:  25 July 2014

Željko Ivezić ,
W. Niel Brandt ,
Xiaohui Fan ,
Chelsea L. MacLeod ,
Gordon T. Richards  and
Peter Yoachim
Željko Ivezić
Affiliation:
Department of Astronomy, University of Washington, Box 351580, Seattle, WA 98195-1580, USA email: ivezic@astro.washington.edu
W. Niel Brandt
Affiliation:
Department of Astronomy and Astrophysics, The Pennsylvania State University, 525 Davey Laboratory, University Park, PA 16802, USA email: niel@astro.psu.edu
Xiaohui Fan
Affiliation:
Steward Observatory, University of Arizona, 933 North Cherry Avenue, Tucson, AZ 85721, USA email: fan@as.arizona.edu
Chelsea L. MacLeod
Affiliation:
Department of Physics, U. S. Naval Academy, 022 Chauvenet Hall, Annapolis, MD 21402, USA email: macleod@usna.edu
Gordon T. Richards
Affiliation:
Department of Physics, Drexel University, 3141 Chestnut Street, Philadelphia, PA 19104, USA email: gtr@physics.drexel.edu
Peter Yoachim
Affiliation:
Department of Astronomy, University of Washington, Box 351580, Seattle, WA 98195-1580, USA email: ivezic@astro.washington.edu
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Abstract

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Over the last decade, quasar sample sizes have increased from several thousand to several hundred thousand, thanks mostly to SDSS imaging and spectroscopic surveys. LSST, the next-generation optical imaging survey, will provide hundreds of detections per object for a sample of more than ten million quasars with redshifts of up to about seven. We briefly review optical quasar selection techniques, with emphasis on methods based on colors, variability properties and astrometric behavior.

Keywords

surveysgalaxies: activequasars: generalstars: variablesstars: statistics

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