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Early-type stars in the young open cluster NGC 2244 and in the Monoceros OB2 association I. The multiplicity of O-type stars
| Indexado |
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| DOI | 10.1051/0004-6361/200911662 | ||||
| Año | 2009 | ||||
| Tipo | artículo de investigación |
Citas Totales
Autores Afiliación Chile
Instituciones Chile
% Participación
Internacional
Autores
Afiliación Extranjera
Instituciones
Extranjeras
Abstract
Conclusions. This spectroscopic investigation places a firm lower limit (17%) on the binary fraction of O-stars in NGC2244 and reveals the lack of short-period O+OB systems in this cluster. In addition, a comparison of these new results with two other well-studied clusters (NGC6231 and IC1805) puts forward possible hints of a relation between stellar density and binarity, which could provide constraints on the theories of the formation and early evolution of hot stars.
| Ord. | Autor | Género | Institución - País |
|---|---|---|---|
| 1 | Mahy, L. | Hombre |
Univ Liege - Bélgica
Universite de Liege - Bélgica |
| 2 | Naze, Y. | Mujer |
Univ Liege - Bélgica
Universite de Liege - Bélgica |
| 3 | Rauw, G. | Hombre |
Univ Liege - Bélgica
Universite de Liege - Bélgica |
| 4 | Gosset, E. | - |
Univ Liege - Bélgica
Universite de Liege - Bélgica |
| 5 | De Becker, M. | - |
Univ Liege - Bélgica
Universite de Liege - Bélgica |
| 6 | Sana, H. | Hombre |
ESO - Chile
European Southern Observatory Santiago - Chile Observatorio Europeo Austral - Chile |
| 7 | Eenens, P. | - |
UNIV GUANAJUATO - México
Universidad de Guanajuato - México |
| Fuente |
|---|
| CONACYT |
| FNRS (Belgium) |
| Communaute Francaise de Belgique |
| Académie Wallonie-Europe |
| Ministere de l'Enseignement Superieur et de la Recherche de la Communaute Francaise |
| Action de recherche concertee (ARC) |
| PRODEX XMM/Integral contract (Belspo) |
| Agradecimiento |
|---|
| This work was supported by the FNRS (Belgium) and by a PRODEX XMM/Integral contract (Belspo) and by the Communaute francaise de Belgique - Action de recherche concertee (ARC) - Academie Wallonie-Europe. The travels to OHP were supported by the Ministere de l'Enseignement Superieur et de la Recherche de la Communaute Francaise. Philippe Eenens acknowledges support through CONACyT grant 67041. We also thank the staff of San Pedro Martir Observatory (Mexico) and of Observatoire de Haute-Provence (France) for their technical support. This work made use of the SIMBAD and the ASAS and Hipparcos databases. |
