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2002MNRAS.330..435B - Mon. Not. R. Astron. Soc., 330, 435-442 (2002/February-3)
Calculation of the masses of the binary star HD 93205 by application of the theory of apsidal motion.
BENVENUTO O.G., SERENELLI A.M., ALTHAUS L.G., BARBA R.H. and MORRELL N.I.
Abstract (from CDS):
We apply this method to calculate the mass of the components of the non-eclipsing massive binary system HD 93205 (03V+08V), which is suspected to be a very young system. To this end, we have computed a grid of evolutionary models covering the mass range of interest, and taking the mass of the primary (M 1 ) as the only independent variable, we solve the equation of apsidal motion for M 1 as a function of the age of the system. The mass of the primary that we find ranges from M1=60±19M☉ for zero-age main-sequence models, which sets an upper limit for M1 , down to M1=40±9M☉ for an age of 2Myr. Accordingly, the upper limit derived for the mass of the secondary (M2=QM1) M2 = 25M☉ is in very good agreement with the masses derived for other O8V stars occurring in eclipsing binaries.
Abstract Copyright: 2002 Blackwell Science Ltd
Journal keyword(s): binaries: eclipsing - stars: early-type - stars: evolution - stars: fundamental parameters - stars: individual: HD 93205 - stars: interiors
Simbad objects: 10
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