A catalog of spectroscopically identified white dwarf stars in the first data release of the sloan digital sky survey

S. J. Kleinman, Hugh C. Harris, Daniel J. Eisenstein, James Liebert, Atsuko Nitta, Jurek Krzesiński, Jeffrey A. Munn, Conard C. Dahn, Suzanne L. Hawley, Jeffrey R. Pier, Gary Schmidt, Nicole M. Silvestri, J. Allyn Smith, Paula Szkody, Michael A. Strauss, G. R. Knapp, Matthew J. Collinge, A. S. Mukadam, D. Koester, Alan UomotoD. J. Schlegel, Scott F. Anderson, J. Brinkmann, D. Q. Lamb, Donald P. Schneider, Donald G. York

Research output: Contribution to journalArticle

168 Scopus citations

Abstract

We present the full spectroscopic white dwarf and hot subdwarf sample from the Sloan Digital Sky Survey (SDSS) first data release, DR1. We find 2551 white dwarf stars of various types, 240 hot subdwarf stars, and an additional 144 objects we have identified as uncertain white dwarf stars. Of the white dwarf stars, 1888 are nonmagnetic DA types and 171 are nonmagnetic DBs. The remaining (492) objects consist of all different types of white dwarf stars: DO, DQ, DC, DH, DZ, hybrid stars such as DAB, etc., and those with nondegenerate companions. We fit the DA and DB spectra with a grid of models to determine the T eff and log g for each object. For all objects, we provide coordinates, proper motions, SDSS photometric magnitudes, and enough information to retrieve the spectrum/image from the SDSS public database. This catalog nearly doubles the known sample of spectroscopically identified white dwarf stars. In the DR1 imaged area of the sky, we increase the known sample of white dwarf stars by a factor of 8.5. We also comment on several particularly interesting objects in this sample.

Original languageEnglish (US)
Pages (from-to)426-444
Number of pages19
JournalAstrophysical Journal
Volume607
Issue number1 I
DOIs
StatePublished - May 20 2004

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science

Keywords

  • Catalogs
  • Subdwarfs
  • White dwarfs

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    Kleinman, S. J., Harris, H. C., Eisenstein, D. J., Liebert, J., Nitta, A., Krzesiński, J., Munn, J. A., Dahn, C. C., Hawley, S. L., Pier, J. R., Schmidt, G., Silvestri, N. M., Smith, J. A., Szkody, P., Strauss, M. A., Knapp, G. R., Collinge, M. J., Mukadam, A. S., Koester, D., ... York, D. G. (2004). A catalog of spectroscopically identified white dwarf stars in the first data release of the sloan digital sky survey. Astrophysical Journal, 607(1 I), 426-444. https://doi.org/10.1086/383464