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Photometric Study of two Southern Algol Type Binaries

Published online by Cambridge University Press:  12 April 2016

K. D. Abhyankar
Affiliation:
Center of Advanced Study in Astronomy,Osmania University, Hyderabad- 500 007, India
M. L. Vyas
Affiliation:
Center of Advanced Study in Astronomy,Osmania University, Hyderabad- 500 007, India

Extract

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Complete UBV light-curves of RR-Lep and RX-Hya have been obtained during 1983-87 seasons. Preliminary elements were computed using modified Wellmann’s method. With these parameters as inputs Wilson-Devinney program was executed for Blue and Yellow passbands simultaneously in detached and semi-detached modes for both the systems. The semidetached mode fitted better than the other solution for both the systems. For RR-Lep, the absolute dimensions were computed by assuming the primary to be a slightly evolved main sequence star. For RX-Hya, the absolute dimensions were computed using Struve’s spectroscopic data. The following table gives all the elements for both the systems. The secondaries of both the systems are overluminous for their masses suggesting that they have lost considerable mass.

Type
Research Article
Copyright
Copyright © Kluwer 1989