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Gravity and effective temperature distribution on the surface of contact binary systems
Author(s) -
Tsantilas S.,
RovithisLivaniou H.
Publication year - 2008
Publication title -
astronomische nachrichten
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.394
H-Index - 63
eISSN - 1521-3994
pISSN - 0004-6337
DOI - 10.1002/asna.200710974
Subject(s) - equipotential , equipotential surface , binary number , contact binary , surface gravity , physics , effective temperature , surface (topology) , photosphere , distribution (mathematics) , work (physics) , astrophysics , thermodynamics , geometry , binary star , mathematical analysis , astronomy , mathematics , spectral line , stars , arithmetic , quantum mechanics
The aim of this work is to study the gravity and the effective temperature distribution on the outer equipotential surface of a contact binary. In particular, the lines of constant g , (the iso‐ g curves), are computed and plotted on the outer surface C s of contact configurations. Since the gravity distribution would also specify the effective temperature distribution on the binary's common photosphere through the gravity darkening effect, these lines correspond to isothermals too. Applications have been made to two contact binaries; namely, to AW UMa and OO Aql, two systems with very different mass ratios. (© 2008 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)