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Titolo: The formation of black hole low-mass X-ray binaries: Through case B or case C mass transfer?
Autore: Nelemans, G; van den Heuvel, EPJ;
- Indirizzi:
- Astron Inst Anton Pannekoek, NL-1098 SJ Amsterdam, Netherlands Astron InstAnton Pannekoek Amsterdam Netherlands NL-1098 SJ Netherlands
- Titolo Testata:
- ASTRONOMY & ASTROPHYSICS
fascicolo: 3,
volume: 376,
anno: 2001,
pagine: 950 - 954
- SICI:
- 1432-0746(200109)376:3<950:TFOBHL>2.0.ZU;2-I
- Fonte:
- ISI
- Lingua:
- ENG
- Soggetto:
- LOSS RATES; PRESUPERNOVA EVOLUTION; STARS; A0620-00; PARAMETERS; MODELS; GRIDS;
- Keywords:
- stars : statistics; binaries : close; binaries : evolution;
- Tipo documento:
- Article
- Natura:
- Periodico
- Settore Disciplinare:
- Physical, Chemical & Earth Sciences
- Citazioni:
- 29
- Recensione:
- Indirizzi per estratti:
- Indirizzo: Nelemans, G Astron Inst Anton Pannekoek, Kruislaan 403, NL-1098 SJ Amsterdam, Netherlands Astron Inst Anton Pannekoek Kruislaan 403 Amsterdam Netherlands NL-1098 SJ
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- Citazione:
- G. Nelemans e E.P.J. van den Heuvel, "The formation of black hole low-mass X-ray binaries: Through case B or case C mass transfer?", ASTRON ASTR, 376(3), 2001, pp. 950-954
Abstract
The formation of low-mass X-ray binaries containing a rather massive (M greater than or similar to7 M-circle dot) black hole is problematic because in most recent stellar evolutionary calculations the immediate progenitors of these black holes (Wolf-Rayet stars) lose so much mass via their stellar wind that their final masses are well below the observed black hole masses. We discuss the recently proposed solution that these binaries are formed through case C mass transfer (i.e. mass transfer after core helium burning is completed), avoiding a long Wolf-Rayet phase and thus significant mass loss. We show that only some of the currently available models for the evolution of massive stars allow this formation channel. We also investigate the effect of the downward revised Wolf-Rayet mass-loss rate as is suggested byobservations, and conclude that in that case Wolf-Rayet stars end their lives with significantly higher masses than previously found and may be able to form a black holes.
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Documento generato il 22/05/13 alle ore 16:32:56