Candidate spectroscopic binaries in the Sloan Digital Sky Survey

Details Candidate spectroscopic binaries in the Sloan Digital Sky Survey Candidate spectroscopic binaries in the Sloan Digital Sky Survey

2005-08-29

arxiv.org/abs/astro-ph/0508605v1

Astronomy and Astrophysics

Astrophysics

7 pages, 17 figures. Accepted for publication in Astronomy and Astrophysics. Table 4 is available at http://sb9.astro.ulb.ac

Scientific paper

10.1051/0004-6361:20053098

We have examined the radial velocity data for stars spectroscopically observed by the Sloan Digital Sky Survey (SDSS) more than once to investigate the incidence of spectroscopic binaries, and to evaluate the accuracy of the SDSS stellar radial velocities. We find agreement between the fraction of stars with significant velocity variations and the expected fraction of binary stars in the halo and thick disk populations. The observations produce a list of 675 possible new spectroscopic binary stars and orbits for eight of them.

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