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Recent Observational Evidence on W Ursae Majoris Stars

Published online by Cambridge University Press:  12 April 2016

H. Rovithis-Livaniou  and
P. Rovithis
H. Rovithis-Livaniou
Affiliation:
National Observatory, Athens, Greece
P. Rovithis
Affiliation:
National Observatory, Athens, Greece

Extract

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During the four last years (1978–1981), some close binaries of W Ursae Majoris type have been observed from the National Observatory of Athens.

In all cases a two-beam, multi-mode, nebular-stellar photometer has been used, attached to the 48-inch Cassegrain reflector at the Kryonerion Station.

The observed systems are: 44i Boo, VW Cep, AB And, BV Dra, BW Dra, U Peg, V508 Oph. Especially VW Cep and 44i Boo, are very interesting objects; in addition to the light curves that have already been published (Rovithis and Rovithis-Livaniou, 1980–1981), other observations were obtained during the last year and are now at computational stage. The observations of these two systems will be continued during the next years.

Type
Part III: Evolutionary Processes in Close Binary Systems
Information
International Astronomical Union Colloquium , Volume 69: Binary and Multiple Stars as Tracers of Stellar Evolution , 1982 , pp. 337 - 342
Copyright
Copyright © Reidel 1982

References

Kwee, K.K.: 1966, Bull. Astr. Inst. Neth. 18, 448.Google Scholar
Rovithis, P. and Rovithis-Livaniou, H.: 1980, Astrophys. Space Sci. 73, 27.CrossRefGoogle Scholar
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Rovithis-Livaniou, H. and Rovithis, P.: 1981, Astrophys. Space Sci. 76, 465.CrossRefGoogle Scholar
Scarfe, C.,D. and Brimacombe, I.: 1971, Astron. J. 76, 50.CrossRefGoogle Scholar