Studies of the Massive O-Binary 29 UW Canis Majoris

Details Studies of the Massive O-Binary 29 UW Canis Majoris Studies of the Massive O-Binary 29 UW Canis Majoris

Sep 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999aas...19410501r&link_type=abstract

American Astronomical Society Meeting 194, #105.01

Astronomy and Astrophysics

Astronomy

Scientific paper

The spectrum of the secondary star in the massive O-binary 29 UW CMa appears much weaker during the receding phases than the approaching ones, which is a demonstration of the "Struve-Sahade Effect." We previously presented evidence, using IUE ultraviolet data, that a wind obscuration effect, rather than heating enhancement, was the cause of these differences in phase. Furthermore, a feature in the cross-correlation function (CCF) at 0.2 phase appeared to be due to light blue shifted by the stream from a directed wind passing close to the secondary. We present a test of this hypothesis from observations in a number of visual bands with the Georgia State University "Multiple Telescope Telescope."

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