The mass and helium discrepancy in massive stars: the case Vela X-1.

Bibcode
1994ems..conf..395V
Vanbeveren, D.; Herrero, A.; Kunze, D.; van Kerkwijk, M.
Bibliographical reference

Meeting: Evolution of massive stars, p. 395 - 400

Advertised on:
1994
Number of authors
4
IAC number of authors
1
Citations
2
Refereed citations
2
Description
A NLTE-analysis is presented of high S/N spectra of the optical component of the standard massive X-ray binary Vela X-1. In combination with the orbital parameters the authors conclude that the optical star is highly helium enriched and is significantly overluminous compared to standard evolutionary tracks of massive accretion stars. The authors then propose a new accretion model able to explain these features.
Type
Non-refereed
Accretion
Stellar atmospheres
Stellar evolution

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