The accreting component of mass-exchange binaries

Abstract

view Abstract Citations (97) References (12) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS The accreting component of mass-exchange binaries. Ulrich, R. K. ; Burger, H. L. Abstract The effect of rapid accretion on a moderate-mass stellar model is studied. The surface boundary condition is examined for two modes of accretion - disk and direct impact. It is found that the effective temperature must be increased for disk accretion but not for direct-impact accretion. In the latter mode the excess kinetic energy of the transfer stream is radiated in an optically thick hot spot or in a hot equatorial band. The remainder of the star is unaffected by the direct-impact accretion. Evolutionary calculations for direct-impact accretion show that the mass-gaining star swells. The present orbital elements of X-ray binaries indicate that these systems went through a contact phase of evolution. Significant quantities of mass and angular momentum may have been lost at that time. Publication: The Astrophysical Journal Pub Date: June 1976 DOI: 10.1086/154406 Bibcode: 1976ApJ...206..509U Keywords: Binary Stars; Mass Transfer; Stellar Evolution; Stellar Mass Ejection; Stellar Models; X Ray Stars; Orbital Elements; Shock Waves; Stellar Luminosity; Stellar Mass; Stellar Temperature; X Ray Binaries; Astrophysics full text sources ADS |