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Non-LTE analysis of the Palomar Green subdwarf O stars

  • V. Evolved Stars
  • Conference paper
  • First Online:
The Atmospheres of Early-Type Stars

Part of the book series: Lecture Notes in Physics ((LNP,volume 401))

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Abstract

Using NLTE model spectra, the sdO subdwarfs found in the Palomar-Green (PG) survey, are analyzed in order to determine their relative contribution to the white dwarf cooling sequence. We can confirm that only a small fraction of the WD's, and thus also of the DB WD's, can be related to the sdO channel.

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Authors and Affiliations

  1. NORDITA, Blegdamsvej 17, DK-2100, Copenhagen, Denmark

    Peter Thejll

  2. Universität der München, Scheinerstrasse 1, D-8000, Denmark

    Franziska Bauer & Dietmar Kunze

  3. Steward Observatory, University of Arizona, 85721, Tucson, AZ, USA

    Rex Saffer & James Liebert

  4. Department of Physics, University of Delaware, 19716, Newark, DE, USA

    Harry Shipman

Authors
  1. Peter Thejll
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  2. Franziska Bauer
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  3. Rex Saffer
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  4. Dietmar Kunze
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  5. Harry Shipman
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  6. James Liebert
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Editor information

U. Heber C. Simon Jeffery

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© 1992 Springer-Verlag

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Thejll, P., Bauer, F., Saffer, R., Kunze, D., Shipman, H., Liebert, J. (1992). Non-LTE analysis of the Palomar Green subdwarf O stars. In: Heber, U., Jeffery, C.S. (eds) The Atmospheres of Early-Type Stars. Lecture Notes in Physics, vol 401. Springer, Berlin, Heidelberg. https://doi.org/10.1007/3-540-55256-1_317

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  • DOI: https://doi.org/10.1007/3-540-55256-1_317

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  • Publisher Name: Springer, Berlin, Heidelberg

  • Print ISBN: 978-3-540-55256-7

  • Online ISBN: 978-3-540-46997-1

  • eBook Packages: Springer Book Archive

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