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Interaction Beyond the Main Sequence: One Recipe?

Published online by Cambridge University Press:  07 August 2017

Jean-Pierre De Greve
Jean-Pierre De Greve*
Affiliation:
Astrophysical Institute Vrije Universiteit Brussel Pleinlaan 2, B-1050 Brussels Belgium

Abstract

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We investigate the different aspects that govern the interaction of post-main-sequence evolution of binaries, using a new, homogeneous set of computations. The set describes the evolution of both components through the phase of mass transfer, till the end of the core helium burning of the primary. The mass range is 9 to 40 Mo, the mass ratios are 0.9 and 0.6 (and introducing 0.99 as a newcomer). Both for small and large masses we discuss the consequences of non-conservative mass transfer. Using a simple concept for the fraction β of transferred matter, we look to its value at the onset of mass transfer for various mass ratios and periods. Exploration of the phase space of interacting binaries reveals the influence of the various parameters on the dimensions of the resulting systems after mass transfer. Special attention is given to binaries with mass ratios very close to one. Their secondaries evolve directly into yellow supergiants such as observed in the LMC.

Type
Invited Papers
Information
Symposium - International Astronomical Union , Volume 151: Evolutionary Processes in Interacting Binary Stars , 1992 , pp. 41 - 50
Copyright
Copyright © Kluwer 1992 

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