Astronomy and Astrophysics – Astronomy
Scientific paper
Jun 1988
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988pasp..100..736b&link_type=abstract
Astronomical Society of the Pacific, Publications (ISSN 0004-6280), vol. 100, June 1988, p. 736-740.
Astronomy and Astrophysics
Astronomy
10
Late Stars, Stellar Spectra, Ultraviolet Astronomy, X Ray Binaries, Emission Spectra, Iue
Scientific paper
UV spectra for four X-ray-selected bright (V less than 10) late-type (F and G) stars have been obtained in both the long- and short-wavelength cameras of the IUE satellite. The stars were selected because they had the largest ratios of X-ray to optical luminosity for their spectral type, with known binaries being eliminated from the sample in order to determine if other mechanisms for extreme X-ray emission are present. Three of the four stars in the sample have since been observed to be binaries with radial-velocity variations consistent with periods of a few days. The fourth star, HD 142361 is a pre-main-sequence star based on the detection of Li I at a wavelength of 6707 A in absorption.
Bergoffen Martin J.
Fleming Thomas Anthony
Stocke John
Walter Frederick
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