ORBi: Fahed R. - Spectroscopic follow-up of the colliding-wind binary WR140 during the 2009 January periastron passage

Reference : Spectroscopic follow-up of the colliding-wind binary WR140 during the 2009 January peria...


	Document type :	Scientific journals : Article
	Discipline(s) :	Physical, chemical, mathematical & earth Sciences : Space science, astronomy & astrophysics
	To cite this reference:	http://hdl.handle.net/2268/82918

Title :	Spectroscopic follow-up of the colliding-wind binary WR140 during the 2009 January periastron passage
Language :	English
Author, co-author :	Fahed, R. [Université de Montréal, Montréal, Canada]
	Moffat, A. F. J. [> > > >]
	Zorec, J. [> > > >]
	Eversberg, T. [> > > >]
	Chené, A. N. [> > > >]
	Alves, F. [> > > >]
	Arnold, W. [> > > >]
	Bergmann, T. [> > > >]
	Gouveia Carreira, L. F. [> > > >]
	Marques Dias, F. [> > > >]
	Fernando, A. [> > > >]
	Sanchez Gallego, J. [> > > >]
	Hunger, T. [> > > >]
	Knapen, J. [> > > >]
	Leadbeater, R. [> > > >]
	Morel, Thierry [Université de Liège - ULg > Département d'astrophys., géophysique et océanographie (AGO) > Groupe d'astrophysique des hautes énergies (GAPHE) >]
	Rauw, Grégor [Université de Liège - ULg > Département d'astrophys., géophysique et océanographie (AGO) > Sciences spatiales >]
	Reinecke, N. [> > > >]
	Ribeiro, J. [> > > >]
	Romeo, N. [> > > >]
	Dossantos, E. M. [ > > ]
	Schanne, L. [> > > >]
	Stahl, O. [> > > >]
	Stober, Ba [> > > >]
	Stober, Be [> > > >]
	Correia Viegas, N. G. [> > > >]
	Vollmann, K. [> > > >]
	Corcoran, M. F. [> > > >]
	Dougherty, S. M. [> > > >]
	Pittard, J. M. [> > > >]
	Pollock, A. M. T. [> > > >]
	Williams, P. M. [> > > >]
Publication date :	1-Jan-2011
Journal title :	Bulletin de la Societe Royale des Sciences de Liege
Volume :	80
Pages :	668-672
Audience :	International
Abstract :	[en] We present the results from the spectroscopic follow-up of WR140 (WC7 + O4-5) during its last periastron passage in January 2009. This object is known as the archetype of colliding wind binaries and has a relatively large period (≃8 years) and eccentricity (≃0.9). We provide updated values for the orbital parameters, new estimates for the WR and O star masses and new constraints on the mass-loss rates.
Target :	Researchers
Permalink :	http://hdl.handle.net/2268/82918
Other URL :	http://cdsads.u-strasbg.fr/abs/2011BSRSL..80..668F

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