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HST FOS Observations of YY Dra

  • Carole A. Haswell
  • Joseph Patterson
Conference paper
Part of the Astrophysics and Space Science Library book series (ASSL, volume 208)

Abstract

The UV continuum of YY Dra exhibits a sinusoidal modulation with 15.5% semi-amplitude and period 264.7 s, commensurate with one half the white dwarf spin period. The CIV line profile varies with spin phase, implying accretion onto, and visibility of, both magnetic poles. The line width is greatest at the phases of continuum pulsation maximum, when the wings extend out to ±3000 km s-1.This implies a minimum white dwarf mass of 0.62 M⊙, and constrains the angle between the line of sight and the magnetic axis.

Keywords

White Dwarf Magnetic Axis Orbital Inclination Spin Period Sinusoidal Modulation 
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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References

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Copyright information

© Kluwer Academic Publishers 1996

Authors and Affiliations

  • Carole A. Haswell
    • 1
  • Joseph Patterson
    • 1
  1. 1.Columbia UniversityNYUSA

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