Reference : The first orbital solution for the massive colliding-wind binary HD 93162 (=WR 25)
Scientific congresses and symposiums : Paper published in a book
Physical, chemical, mathematical & earth Sciences : Space science, astronomy & astrophysics
http://hdl.handle.net/2268/15959
The first orbital solution for the massive colliding-wind binary HD 93162 (=WR 25)
English
Gamen, R. [Departamento de Física, Universidad de La Serena, Benavente 980, La Serena, Chile (rgamen@dfuls.cl).]
Gosset, Eric mailto [Université de Liège - ULg > Département d'astrophys., géophysique et océanographie (AGO) > Groupe d'astrophysique des hautes énergies (GAPHE) >]
Morrell, N. I. [> > > >]
Niemela, V. S. [> > > >]
Sana, H. [> > > >]
Nazé, Yaël mailto [Université de Liège - ULg > Département d'astrophys., géophysique et océanographie (AGO) > Sciences spatiales >]
Rauw, Grégor mailto [Université de Liège - ULg > Département d'astrophys., géophysique et océanographie (AGO) > Groupe d'astrophysique des hautes énergies (GAPHE) - Sciences spatiales >]
Barbá, R. H. [> > > >]
Solivella, G. R. [> > > >]
1-Aug-2008
Revista Mexicana de Astronomia y Astrofisica Conference Series
33
91-93
No
International
[en] binaries: spectroscopic ; stars: individual (HD 93162) ; stars: Wolf-Rayet
[en] Since the discovery, with EINSTEIN, of strong X-ray emission associated with HD 93162, this object was recurrently predicted by some authors to be a colliding-wind binary system. However, radial-velocity variations that would prove the suspected binary nature have never been found so far. We spectroscopically monitored this object in order to investigate its possible variability and to provide an answer to the above-mentioned discordance. We derived radial velocities from spectroscopic data acquired mainly between 1994 and 2006, and searched for periodicities. For the first time, periodic radial-velocity variations are detected. Our analysis definitively shows that the Wolf-Rayet star WR 25 is actually an eccentric binary system with a probable period of about 208 days.
Professionals
http://hdl.handle.net/2268/15959
http://adsabs.harvard.edu/abs/2008RMxAC..33...91G

File(s) associated to this reference

Fulltext file(s):

FileCommentaryVersionSizeAccess
Open access
RMxAC..33_rgamen.pdfPublisher postprint110.91 kBView/Open

Bookmark and Share SFX Query

All documents in ORBi are protected by a user license.