Published 1997
| public
Book Section - Chapter
Space Density of Z > 4 Quasars from the Second Palomar Sky Survey
Abstract
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.
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.Additional details
- Eprint ID
- 97376
- Resolver ID
- CaltechAUTHORS:20190724-075242320
- AST-9157412
- NSF
- Bressler Foundation
- Created
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2019-07-24Created from EPrint's datestamp field
- Updated
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2021-11-16Created from EPrint's last_modified field
- Series Name
- Astrophysics and Space Science Library
- Series Volume or Issue Number
- 212