Statistics
Scientific paper
Mar 1987
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987aj.....93..579m&link_type=abstract
Astronomical Journal (ISSN 0004-6256), vol. 93, March 1987, p. 579-588. Research supported by the Applied Research Corp.
Statistics
6
B Stars, Binary Stars, Late Stars, Magellanic Clouds, Milky Way Galaxy, Supergiant Stars, Predictions, Separation, Star Distribution, Statistics
Scientific paper
The authors develop a model for the binary frequencies of late-type supergiants. The model incorporates the semimajor-axis limitations imposed by Roche lobe overflow and is flexible enough to include the observational constraints imposed by various observing procedures. In particular, constraints on the minimum observable velocity amplitudes of the primaries and the presence of hot secondaries - observed in the UV - are predicted and found to be in excellent agreement with existing observations. The model is then used to predict the expected distribution of angular separations of late-type galactic supergiants and luminous M supergiants in the LMC. It is shown that the interferometer proposed by Massa and Endal (1987) should be capable of "resolving" more than 40 galactic Cepheid binaries, about 400 nonvariable large-type galactic supergiant binaries, and 25 M supergiant binaries in the LMC.
Endal Andrew S.
Massa Derck
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