Spectroscopy of quasar candidates from SDSS commissioning data
The Sloan Digital Sky Survey has obtained images in five broad-band colors for several hundred square degrees. We present color-color diagrams for stellar objects, and demonstrate that quasars are easily distinguished from stars by their distinctive colors. Follow-up spectroscopy in less than ten nights of telescope time has yielded 22 new quasars, 9 of them at z{gt}3.65, and one with z=4.75, the second highest-redshift quasar yet known. Roughly 80{percent} of the high-redshift quasar candidates selected by color indeed turn out to be high-redshift quasars. {copyright} {ital 1999 American Institute of Physics.}
- Sponsoring Organization:
- USDOE
- OSTI ID:
- 703525
- Report Number(s):
- CONF-981092-; ISSN 0094-243X; TRN: 9918M0014
- Journal Information:
- AIP Conference Proceedings, Vol. 470, Issue 1; Conference: 9. astrophysics conference: after the dark ages: when galaxies were young, College Park, MD (United States), 12-14 Oct 1998; Other Information: PBD: Apr 1999
- Country of Publication:
- United States
- Language:
- English
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