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Towards a Luminosity Function of Hot DA White Dwarfs

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Book cover White Dwarfs

Part of the book series: Astrophysics and Space Science Library ((ASSL,volume 214))

Abstract

This is a progress report on our luminosity function of 329 Palomar Green DA white dwarfs, all reobserved with CCD spectrophotometry and analyzed in the manner of Bergeron, Saffer & Liebert (1992). The combined luminosity and mass functions are presented. Three distinct mass groups of white dwarfs may be identified: (1) the predominant peak group with a median mass just below 0.6 M⊙; (2) the component of likely close binaries where the visible white dwarf is composed of a helium interior and mass < 0.5M⊙; and, (3) massive white dwarfs ≥ 0.9M⊙. This last group includes all three magnetic DA stars for which a measurement or estimate of the mass and radius are available.

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References

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Author information

Authors and Affiliations

  1. Steward Obs., University of Arizona, Tucson, AZ, 85721, USA

    J. Liebert, T. A. Fleming & J. B. Holberg

  2. Université de Montreal, Canada

    P. Bergeron

  3. Villanova University, USA

    R. A. Saffer

Authors
  1. J. Liebert
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  2. T. A. Fleming
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  3. J. B. Holberg
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  4. P. Bergeron
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  5. R. A. Saffer
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Editor information

Editors and Affiliations

  1. Institut d’Estudis Espacials de Catalunya, CSIC, Barcelona, Spain

    J. Isern  & M. Hernanz  & 

  2. Dept. de Fìsica Aplicada, Universitat Politècnica de Catalunya, Jordi Girona s/n, Mòdul B-4, Barcelona, 08034, Spain

    E. García-Berro

  3. IEEC, Edifici Nexus - 104, Gran Capità 2-4, 08034, Barcelona, Spain

    J. Isern  & M. Hernanz  & 

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© 1997 Springer Science+Business Media Dordrecht

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Liebert, J., Fleming, T.A., Holberg, J.B., Bergeron, P., Saffer, R.A. (1997). Towards a Luminosity Function of Hot DA White Dwarfs. In: Isern, J., Hernanz, M., García-Berro, E. (eds) White Dwarfs. Astrophysics and Space Science Library, vol 214. Springer, Dordrecht. https://doi.org/10.1007/978-94-011-5542-7_14

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  • DOI: https://doi.org/10.1007/978-94-011-5542-7_14

  • Publisher Name: Springer, Dordrecht

  • Print ISBN: 978-94-010-6334-0

  • Online ISBN: 978-94-011-5542-7

  • eBook Packages: Springer Book Archive

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