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Hydrogen Deficiency in Algol Secondaries

Published online by Cambridge University Press:  12 April 2016

Praveen Nagar  and
K.D. Abhyankar
Praveen Nagar
Affiliation:
Centre of Advanced Study in AstronomyOsmania UniversityHyderabad - 500 007, INDIA
K.D. Abhyankar
Affiliation:
Centre of Advanced Study in AstronomyOsmania UniversityHyderabad - 500 007, INDIA

Abstract

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A study was carried out for 309 Algol systems to show that most of the secondary components of low mass-ratio systems are hydrogen deficient stars. This hydrogen deficiency is evident from their positions on a Δ log L - Δ log T plot, where Δ is the difference between the observed quantity, log L or log Te, and the value of the same quantity for a star of the same mass on the empirical Main Sequence. The secondary components are shown to occupy the region of mass losing helium dwarfs on this plot. A correlation has also been obtained between the excess of effective temperature and the mass ratio of the system.

Type
V Hydrogen Deficient Binaries
Information
International Astronomical Union Colloquium , Volume 87: Hydrogen Deficient Stars and Related Objects , 1985 , pp. 251 - 257
Copyright
Copyright © Reidel 1986

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