Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 1981
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981apjs...47..333k&link_type=abstract
Astrophysical Journal Supplement Series, vol. 47, Dec. 1981, p. 333-338. Research supported by the Koninklijke Nederlandse Akad
Astronomy and Astrophysics
Astronomy
14
Binary Stars, Spaceborne Astronomy, Stellar Spectrophotometry, Ultraviolet Astronomy, Astronomical Catalogs, Astronomical Netherlands Satellite, Far Ultraviolet Radiation, Near Ultraviolet Radiation, Stellar Mass Ejection
Scientific paper
Photometric observations obtained with the Astronomical Netherlands Satellite in five ultraviolet wavelength regions for 14 close binaries are presented. Strong excess far-ultraviolet flux is detected in four objects. The binaries TT Hya, RX Cas, and SX Cas exhibit a pronounced excess of far-ultraviolet flux, which is thought to be the result of mass transfer phenomena in these systems. Observations of the binary R Ara show very peculair variations; its far ultraviolet flux at 1550 A brightened by 0.4 mag between phases 0.7 and 0.8, while its near ultraviolet flux at 3300 A decreased by 0.5 mag over this same half-day interval. The A0 II-III component in the system RZ Sct is seen to dominate the ultraviolet spectrum.
Kondo Yoshihiko
McCluskey George E.
Wu Congjun
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