Other
Scientific paper
May 1996
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996sao..repts....s&link_type=abstract
Technical Report, Smithsonian Astrophysical Observatory ,Cambridge,MA United States
Other
Iue, Stellar Spectra, Ultraviolet Spectra, Spectrum Analysis, Dwarf Stars, Stellar Evolution, Stellar Activity, Sine Waves, Rotational Spectra, Stellar Rotation
Scientific paper
A deep short wavelength prime (SWP) spectrum of the marginal BY Dra star GL 256 shows no obvious C IV or other transition region line emission. This is at odds with other members of the class and raises the question of whether GL 256 is a bonafide member of this group. An analysis of the optical high resolution spectra indicates that the star is somewhat warmer than previously suspected. We suggest that GL 256 is in fact not a marginal BY Dra star. Two sets of International Ultraviolet Explorer (IUE) observations of the star HD 10780 were obtained in September 1992 and January 1993. An analysis of these data indicates that the star appears to have confounded expectations and does not have a simple, quasi-sinusoidal dynamo cycle.
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