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Magnetic activity and evolution of Algol-type stars - II
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Date
1998-07-01
Author
SARNA, MAREK
Yerli, Sinan Kaan
Muslimov, A G
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We examine the possibility of probing dynamo action in mass-losing stars, components of Algol-type binaries, Our analysis is based on the calculation of nonconservative evolution of these systems, We model the systems U Sge and beta Per where the more massive companion fills its Roche lobe at the main sequence (case AB) and where it has a small helium core (early case B) respectively, We show that to maintain evolution of these systems at the late stages which are presumably driven by stellar 'magnetic braking', an efficient mechanism for producing large-scale surface magnetic fields in the donor star is needed. We discuss the relevance of dynamo operation in the donor star to the accelerated mass transfer during the late stages of evolution of Algol-type binaries. We suggest that the observed X-ray activity in Algol-type systems may be a good indicator of their evolutionary status and internal structure of the mass-losing stellar components.
Subject Keywords
Stars
,
X-rays
,
Binaries
,
Close
,
Evolution
,
Individual
,
Beta Per
,
U Sge
,
Magnetic fields
URI
https://hdl.handle.net/11511/41917
Journal
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
DOI
https://doi.org/10.1046/j.1365-8711.1998.01539.x
Collections
Department of Physics, Article
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M. SARNA, S. K. Yerli, and A. G. Muslimov, “Magnetic activity and evolution of Algol-type stars - II,”
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
, pp. 760–768, 1998, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/41917.