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A Search for Rotational Modulation in the EUV Emission from AB Doradus

  • S. M. White
  • J. Lim
  • S. M. Rucinski
  • G. Roberts
  • D. Kilkenny
  • S. G. Ryan
  • P. Prado
  • M. R. Kundu

Abstract

One of the goals of the EUVE observation of AB Doradus was to search for rotational modulation of the EUV emissions. In support of this goal we carried out optical photometry in Chile, Australia and South Africa and radio observations in Australia. In addition, an ASCA observation of AB Dor was scheduled to occur during the campaign. Several spectacular X-ray and optical flares with accompanying brightening in the EUV were seen, but no rotational modulation of the EUV emission was evident, except for a dip in the He II 304 Å line coincident with the optical minimum. An X-ray flare was seen with no accompanying EUV flare.

Keywords

Light Curve Rotational Modulation Rotational Phase Radio Observation Dwarf Star 
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

© Springer Science+Business Media Dordrecht 1996

Authors and Affiliations

  • S. M. White
    • 1
  • J. Lim
    • 2
  • S. M. Rucinski
    • 3
  • G. Roberts
    • 4
  • D. Kilkenny
    • 4
  • S. G. Ryan
    • 5
  • P. Prado
    • 6
  • M. R. Kundu
    • 1
  1. 1.Dept. of AstronomyUniv. of MarylandCollege ParkUSA
  2. 2.IAAAcademica SinicaNankang, TaipeiTaiwan
  3. 3.Inst. for Space and Terr. Science, and York Univ.TorontoCanada
  4. 4.South African Astronomical ObservatorySouth Africa
  5. 5.Anglo-Australian ObservatoryEppingUK
  6. 6.Las Campanas ObservatoryLa SerenaChile

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