Spectroscopy of quasar candidates from SDSS commissioning data | Zendy

Xiaohui Fan | Zendy; Michael A. Strauss | Zendy; J. Annis | Zendy; James E. Gunn | Zendy; G. S. Hennessy | Zendy; Željko Ivezić | Zendy; G. R. Knapp | Zendy; Robert H. Lupton | Zendy; Jeffrey A. Munn | Zendy; Heidi Jo Newberg | Zendy; Donald P. Schneider | Zendy; B. Yanny | Zendy

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Spectroscopy of quasar candidates from SDSS commissioning data

Author(s) -

Xiaohui Fan,

Michael A. Strauss,

J. Annis,

James E. Gunn,

G. S. Hennessy,

Željko Ivezić,

G. R. Knapp,

Robert H. Lupton,

Jeffrey A. Munn,

Heidi Jo Newberg,

Donald P. Schneider,

B. Yanny

Publication year - 1999

Publication title -

astrophysics

Language(s) - English

Resource type - Conference proceedings

DOI - 10.1063/1.58612

Subject(s) - quasar , redshift , sky , physics , astrophysics , astronomy , stars , spectroscopy , telescope , redshift survey , galaxy

The Sloan Digital Sky Survey has obtained images in five broad-band colorsfor several hundred square degrees. We present color-color diagrams for stellarobjects, and demonstrate that quasars are easily distinguished from stars bytheir distinctive colors. Follow-up spectroscopy in less than ten nights oftelescope time has yielded 22 new quasars, 9 of them at $z> 3.65$, and one with$z = 4.75$, the second highest-redshift quasar yet known. Roughly 80% of thehigh-redshift quasar candidates selected by color indeed turn out to behigh-redshift quasars.Comment: 4 pages, 3 figures, to appear in the proceedings of "After the Dark Ages: When Galaxies were Young (the Universe at 2

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