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Space Density of Z > 4 Quasars from the Second Palomar Sky Survey

Kennefick, J. D. and Djorgovski, S. and de Carvalho, R. R. (1997) Space Density of Z > 4 Quasars from the Second Palomar Sky Survey. In: Wide-Field Spectroscopy. Astrophysics and Space Science Library. No.212. Springer , Dordrecht, pp. 381-382. ISBN 978-94-010-6413-2.

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In recent years, several groups have undertaken searches for quasars at very high redshifts with the aim of computing quasar space densities as well as providing quasars for studies of intervening material. Schmidt et al. (1995; SSG) have computed densities at 2.7 < z < 4.7 from 90 quasars discovered through their Lyα emission. Warren et al. (1994; WHO) have computed densities at 2.2 < z < 4.5 using quasars discovered in a photographic multicolor survey. Irwin et al. (1991; IMH) have discovered 31 quasars in a photographic multicolor survey for bright quasars at z > 4.

Item Type:Book Section
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URLURL TypeDescription
Djorgovski, S.0000-0002-0603-3087
de Carvalho, R. R.0000-0002-1283-3363
Additional Information:© 1997 Springer Science+Business Media Dordrecht. This work was supported in part by the NSF PYI award AST-9157412, and the Bressler Foundation. We would like to thank Ussama Fayad and Joe Roden at JPL and Nick Weir for their developement of the software used for turning plate scans into object catalogs (SKI CAT). We also wish to thank the staff at Palomar Observatory for their help with the observations.
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Bressler FoundationUNSPECIFIED
Series Name:Astrophysics and Space Science Library
Issue or Number:212
Record Number:CaltechAUTHORS:20190724-075242320
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:97376
Deposited By: Tony Diaz
Deposited On:24 Jul 2019 16:36
Last Modified:16 Nov 2021 17:31

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