since 05 February 2011 :
View(s): 218 (12 ULiège)
Download(s): 271 (29 ULiège)
print        
L. Mahy, G. Rauw, F. Martins, E. Gosset, Y. Nazé, M. Godart, H.Sana, M. De Becker & P. Eenens

The multiplicity of O-type stars in NGC2244

(Volume 80 - Année 2011)
Article
Open Access

Abstract

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 NGC2244. 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.

To cite this article

L. Mahy, G. Rauw, F. Martins, E. Gosset, Y. Nazé, M. Godart, H.Sana, M. De Becker & P. Eenens, «The multiplicity of O-type stars in NGC2244», Bulletin de la Société Royale des Sciences de Liège [En ligne], Volume 80 - Année 2011, 622 - 627 URL : https://popups.ulg.ac.be/0037-9565/index.php?id=3083.

About: L. Mahy

Institute of Astrophysics and Geophysics, University of Liège, Belgium

About: G. Rauw

Institute of Astrophysics and Geophysics, University of Liège, Belgium

About: F. Martins

GRAAL, Université Montpellier II, CNRS, France

About: E. Gosset

Institute of Astrophysics and Geophysics, University of Liège, Belgium

About: Y. Nazé

Institute of Astrophysics and Geophysics, University of Liège, Belgium

About: M. Godart

Institute of Astrophysics and Geophysics, University of Liège, Belgium

About:  H.Sana

Sterrenkundig Instituut “Anton Pannekoek”, Universiteit van Amsterdam, The Netherlands

About: M. De Becker

Institute of Astrophysics and Geophysics, University of Liège, Belgium

About: P. Eenens

Departamento de Astronomía, Universidad de Guanajuato, Mexico