2008/12/30 by M. J. Sarna, Marek J. Sarna, Sarna, Marek J.
Engineering · Physics and Astronomy · #Astronomical Observations and Instrumentation #Astronomy and Astrophysical Research #Astrophysics (astro-ph) #FOS: Physical sciences #Stellar, planetary, and galactic studies #astro-ph
paper · pdf · doi:10.48550/arxiv.0812.5051
5 pages, 2 tables, will be submitt to Acta Astron
arxiv created 2008/12/30 · openalex publication_date 2008/12/30 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We perform evolutionary calculations of binary stars to find progenitors of system with parameters similar to the eclipsing binary system V228. We show that a V228 binary system may be formed starting with an initial binary system which has a low main sequence star as an accretor. The initial parameters for the evolutionary model are as follow: M1,i = 0.88 M_\odot , M2,i = 0.85 M_\odot , Pi=1.35 days, f1=0.05, f2=4.65 and Z=0.006 ([Fe/H]=--0.67). We also show that the best fitting model implies loss of about 50 per cent of initial total orbital momentum but only 5 per cent of initial total mass. The less massive component have a small helium core of mass 0.12--0.17 M_\odot and exchange mass in the nuclear time scale.