On the origin and evolutionary state of RZ Cas, KO Aql and S Equ

Autor:	Mennekens, N., De Greve, J. -P., Van Rensbergen, W., Yungelson, L. R.
Rok vydání:	2008
Předmět:	Astrophysics
Zdroj:	A&A 486, 919--921 (2008)
Druh dokumentu:	Working Paper
DOI:	10.1051/0004-6361:200809530
Popis:	Aims. Determination of the present evolutionary state and the restrictions on the initial mass ratios of RZ Cas, KO Aql and S Equ. Methods. Comparison of mass gaining stars with evolutionary models of single stars with the same mass and subsequent comparison with accretion tracks from simultaneous conservative binary evolution. Results. The gainers are in an early main sequence stage (Xc greater than 0.5), with KO Aql being almost unevolved (assuming quasi-thermal equilibrium). The initial donor/gainer mass ratios Mdi/Mgi must be larger than three to obtain the present mass and luminosity of the gainers. Comment: 4 pages, 2 figures, accepted for publication in A&A; accepted version
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/0802.0944 Zobrazit plný text záznamu View this record from Arxiv