Implications of massive close binaries for black hole formation and supernovae
| dc.creator | Wellstein, S. | |
| dc.creator | Langer, N. | |
| dc.date | 1999-04-20 | |
| dc.date | 1999-08-27 | |
| dc.date.accessioned | 2026-07-07T02:31:17Z | |
| dc.date.available | 2026-07-07T02:31:17Z | |
| dc.description | The progenitor evolution of the massive X-ray binary Wray 977 is investigated using new models of massive close binary evolution. These models yield constraints on the mass limit for neutron star/black hole formation in single stars, M_BH. We argue for quasi-conservative evolution in this system, and we find M_BH > 13...21 M_sun from the existence of a neutron star in Wray 977, with the uncertainty being due to uncertainties in the treatment of convection. Our results revise earlier published much larger values of M_BH derived from the parameters of Wray 977. Then, on the basis of a grid of 37 evolutionary models for massive close binaries with various initial masses, mass ratios and periods, we derive primary initial-final mass, initial mass-final helium core mass, and initial mass-final CO-core mass relations for the various mass transfer cases of close binary evolution. From these models we derive for single stars that M_BH =< 25 M_sun, independent of whether most black hole binaries formed through the Case A/B or the Case C binary channel. Using our grid of binary models, we obtain a consistent scenario for the formation of black holes in binary systems. | |
| dc.description | 16 pages, 6 figures, final version accepted by A&A, no substantial changes | |
| dc.identifier | https://arxiv.org/abs/astro-ph/9904256 | |
| dc.identifier | http://arxiv.org/abs/astro-ph/9904256 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/14103 | |
| dc.subject | Astrophysics | |
| dc.title | Implications of massive close binaries for black hole formation and supernovae | |
| dc.type | text |