Mass loss out of close binaries
| Autor: | Van Rensbergen, W., De Greve, J. P., Mennekens, N., Jansen, K., De Loore, C. |
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| Rok vydání: | 2009 |
| Předmět: | |
| Zdroj: | A&A 510, A13 (2010) |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1051/0004-6361/200913272 |
| Popis: | In a liberal evolutionary scenario, mass can escape from a binary during eras of fast mass transfer. We calculate the mass lost by binaries with a B-type primary at birth where mass transfer starts during hydrogen core burning of the donor. We simulate the distribution of mass-ratios and orbital periods for those interacting binaries. The amount of time the binary shows Algol characteristics within different values of mass-ratio and orbital period has been fixed from conservative and liberal evolutionary calculations. We use these data to simulate the distribution of mass-ratios and orbital periods of Algols with the conservative as well as the liberal model. We compare mass-ratios and orbital periods of Algols obtained by conservative evolution with those obtained by our liberal model. Since binaries with a late B-type primary evolve almost conservatively, the overall distribution of mass-ratios will only yield a few Algols more with high mass-ratios than conservative calculations do. Whereas the simulated distribution of orbital periods of Algols fits the observations well, the simulated distribution of mass-ratios produces always too few systems with large values. Comment: 6 pages, 6 figures, accepted for publication in A&A; accepted version |
| Databáze: | arXiv |
| Externí odkaz: |
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