The multiplicity of O-type stars in NGC 2244

Bibcode
2011BSRSL..80..622M
Mahy, L.; Rauw, G.; Martins, F.; Gosset, E.; Nazé, Y.; Godart, M.; Sana, H.; De Becker, M.; Eenens, P.
Bibliographical reference

Société Royale des Sciences de Liège, Bulletin, vol. 80, p. 622-627 (Proceedings of the 39th Liège Astrophysical Colloquium, held in Liège 12-16 July 2010, edited by G. Rauw, M. De Becker, Y. Nazé, J.-M. Vreux, P. Williams)

Advertised on:
1
2011
Number of authors
9
IAC number of authors
0
Citations
0
Refereed citations
0
Description
The investigation of the multiplicity of massive stars is crucial to determine a robust binary fraction but also for understanding the physical properties of these objects. In this contribution, we will present the main results from our long-term spectroscopic survey devoted to the young open cluster NGC 2244. We discuss the spectral classification, the projected rotational velocity (v sin{i}) and the multiplicity of O-stars. The stellar and wind parameters of each star, obtained using the CMFGEN atmosphere code, help us to better constrain the individual properties of these objects. Several of these stars were observed by the CoRoT satellite (SRa02) in the Asteroseismology channel. This intensive monitoring and the unprecedented quality of the light curves allow us to shed a new light on these objects.
Type
Refereed

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