stars: individual (HD 150136); binaries: spectroscopic; stars: fundamental parameters
Abstract :
[en] We present the preliminary results of an intensive monitoring devoted to HD 150136. Already quoted as an O3+O6 binary, we detected a third O-type component physically linked to the system, making it one of the nearest (1.3 kpc) most massive systems known until now (~134M[SUB]solar[/SUB]). To determine the physical parameters of this system, we applied a disentangling program to study individually the three components. It allows us to constrain their spectral types and to derive a new orbital solution for the short-period system.
Disciplines :
Space science, astronomy & astrophysics
Author, co-author :
Mahy, Laurent ; Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Sciences spatiales
Gosset, Eric ; Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Groupe d'astrophysique des hautes énergies (GAPHE)
Sana, Hugues; Sterrenkundig Instituut ‘Anton Pannekoek’, Universiteit van Amsterdam, Postbus 94249, NL-1090 GE Amsterdam, The Netherlands
Rauw, Grégor ; Institut d'Astrophysique et de Géophysique, University of Liège, Allée du 6 Août, 17, Bât. B5C, B-4000, Liège, Belgium
Fauchez, Thomas; Institut d'Astrophysique et de Géophysique, University of Liège, Allée du 6 Août, 17, Bât. B5C, B-4000, Liège, Belgium
Nitschelm, Christian; Instituto de Astronomía, Universidad Católica del Norte, Avenida Angamos 0610, Antofagasta, Chile
Language :
English
Title :
HD 150136: towards one of the most massive systems?
Publication date :
01 July 2011
Audience :
International
Main work title :
Active OB stars: structure, evolution, mass loss and critical limits
