High-Redshift Quasars Found in Sloan Digital Sky Survey Commissioning Data. II. The Spring Equatorial Stripe
Abstract
This is the second paper in a series aimed at finding high-redshift quasars from five-color (u'g'r'i'z') imaging data taken along the Celestial Equator by the Sloan Digital Sky Survey (SDSS) during its commissioning phase. In this paper, we present 22 high-redshift quasars (z>3.6) discovered from ~250 deg2 of data in the spring Equatorial Stripe, plus photometry for two previously known high-redshift quasars in the same region of the sky. Our success rate in identifying high-redshift quasars is 68%. Five of the newly discovered quasars have redshifts higher than 4.6 (z=4.62, 4.69, 4.70, 4.92, and 5.03). All the quasars have i*<20.2 with absolute magnitude -28.8B<-26.1 (h=0.5, q0=0.5). Several of the quasars show unusual emission and absorption features in their spectra, including an object at z=4.62 without detectable emission lines, and a broad absorption line (BAL) quasar at z=4.92.
- Publication:
-
The Astronomical Journal
- Pub Date:
- January 2000
- DOI:
- 10.1086/301191
- arXiv:
- arXiv:astro-ph/9909169
- Bibcode:
- 2000AJ....119....1F
- Keywords:
-
- GALAXIES: QUASARS: GENERAL;
- SURVEYS;
- Astrophysics
- E-Print:
- 28 pages, AJ in press (Jan 2000), final version with minor changes