A Model for the Galactic Population of Supersoft X-ray Sources

  • L. Yungelson
  • A. Tutukov
  • A. Fedorova
  • M. Livio
  • J. W. Truran
Part of the Astrophysics and Space Science Library book series (ASSL, volume 208)

Abstract

Three major sub-populations of Galactic supersoft X-ray sources may exist: semi-detached binaries with main sequence or subgiant donors, and symbiotic binaries (~ 550, ~ 460, and ~ 600 objects, respectively). Each group contains both permanent and transient sources. The intrinsic and interstellar absorptions reduce the number of observable sources to ~ 25. We derive the distributions of the sources over orbital periods, masses of the components, and ‘on’-times. The rate at which white dwarfs in Galactic binaries reach M Ch is ~ 3 10-5 yr-1. The rate of He-shell detonations which may lead to supernovae may be up to 3 10-4 yr-1.

Keywords

Cataclysmic Variable Bolometric Luminosity Permanent Source Symbiotic Star Interstellar Absorption 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Kluwer Academic Publishers 1996

Authors and Affiliations

  • L. Yungelson
    • 1
  • A. Tutukov
    • 1
  • A. Fedorova
    • 1
  • M. Livio
    • 2
  • J. W. Truran
    • 3
  1. 1.Institute of Astronomy of the Russian Academy of SciencesMoscowRussia
  2. 2.Space Telescope Science InstituteBaltimoreUSA
  3. 3.Department of Astronomy and Astrophysics, Enrico Fermi Institute of PhysicsUniversity of ChicagoChicagoUSA

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