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  • ASTROPHYSICS  (2)
  • 1
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    The WC6 star HD76536 compact companion (1982)
    In:  Other Sources
    Details
    Publication Date: 2011-08-18
    Description: The variability of HD76536 was observed by IUE. Photometric variability is confirmed by measurements with the IUE fine error sensor. Profile changes in the ultraviolet emission lines and stellar wind absorptions were studied. Data favor a binary model with a low luminosity (perhaps compact) secondary.
    Keywords: ASTROPHYSICS
    Type: ESA 3rd European IUE Conf.; p 269-271
    Format: text
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    NASA TECHNICAL REPORTS
  • 2
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    Detection of a stellar flare at extreme ultraviolet wavelengths (1991)
    In:  Other Sources
    Details
    Publication Date: 2011-08-19
    Description: During the all-sky survey conducted by the Rosat Wide Field Camera, the binary flare star system BY Draconis was monitored with coverage by the IUE satellite far-UV and optical observations and by the Rosat X-ray telescope for part of the time. A stellar flare was detected in all four wavebands. This is the first unambiguous EUV detection of a flare and one of the widest simultaneous wavelength-range coverages obtained. The peak luminosity and total energy of this flare in the photon energy range 0.08-0.18 keV are comparable with the values obtained for a number of flares integrated over a larger energy range by Exosat satellite observations in 1983-86. It is concluded that radiation in the EUV carries away a substantial fraction of the total flare energy.
    Keywords: ASTROPHYSICS
    Type: Nature (ISSN 0028-0836); 353; 635-637
    Format: text
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    NASA TECHNICAL REPORTS
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