Reference : Spectroscopy of the archetype colliding-wind binary WR 140 during the 2009 January pe...
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Space science, astronomy & astrophysics
http://hdl.handle.net/2268/105090
Spectroscopy of the archetype colliding-wind binary WR 140 during the 2009 January periastron passage
English
Fahed, R. [Département de physique, Université de Montréal, CP 6128, Succ. C.-V., Montréal, QC H3C 3J7, and Centre de Recherche en Astrophysique du Québec, Canada]
Moffat, A. F. J. [Département de physique, Université de Montréal, CP 6128, Succ. C.-V., Montréal, QC H3C 3J7, and Centre de Recherche en Astrophysique du Québec, Canada]
Zorec, J. [Institut d'Astrophysique de Paris, UMR7095 CNRS, Université Pierre et Marie Curie, 98bis bd. Arago F-75014 Paris, France]
Eversberg, T. [Schnörringen Telescope Science Institute, Waldbröl, Germany]
Chené, A. N. [Canadian Gemini Office, HIA/NRC of Canada, 5071 West Saanich Road, Victoria, BC V9E 2E7, Canada; Departamento de Astronomía, Facultad de Ciencias Físicas y Matemáticas, Av. Esteban Iturra s/n Barrio Universitario, Universidad de Concepción, Casilla 160-C, Concepción, Chile; Departamento de Física y Astronomía, Facultad de Ciencias, Universidad de Valparaíso, Av. Gran Bretaña 1111, Playa Ancha, Casilla 5030, Valparaíso, Chile]
Alves, F. [CRESST and X-ray Astrophysics Laboratory, NASA/GSFC, Greenbelt, MD 20771, USA; Universities Space Research Association, 10211 Wisconsin Circle, Suite 500, Columbia, MD 21044, USA]
Arnold, W. [National Research Council, Herzberg Institute of Astrophysics, Dominion Radio Astrophysical Observatory, PO Box 248, Penticton, BC V2A 6J9, Canada]
Bergmann, T. [Royal Observatory of Belgium, 3 Av. circulaire, B-1180 Bruxelles, Belgium]
Corcoran, M. F. [Instituto de Astrofísica de Canarias, E-38205 La Laguna, Tenerife, Spain; Departamento de Astrofísica, Universidad de La Laguna, E-38200 La Laguna, Tenerife, Spain]
Correia Viegas, N. G. [Three Hills Observatory, The Birches, CA7 1JF]
Dougherty, S. M. [European Organization for Astronomical Research in the Southern Hemisphere, Alonso de Cordova 3107, Vitacura, Santiago de Chile, Chile]
Fernando, A. [Université de Liège - ULg > Département d'astrophys., géophysique et océanographie (AGO) > Groupe d'astrophysique des hautes énergies (GAPHE)]
Frémat, Y. [School of Physics and Astronomy, University of Leeds, Woodhouse Lane, Leeds LS2 9JT]
Gouveia Carreira, L. F. [European Space Agency XMM-Newton Science Operations Centre, Apartado 78, 28691 Villanueva de la Cañada, Spain]
Hunger, T. [Université de Liège - ULg > Département d'astrophys., géophysique et océanographie (AGO) > Sciences spatiales]
Knapen, J. H. [Instituto de Astrofísica de Canarias, E-38205 La Laguna, Tenerife, Spain; Departamento de Astrofísica, Universidad de La Laguna, E-38200 La Laguna, Tenerife, Spain]
Leadbeater, R. [Centre Hospitalier Universitaire de Liège - CHU > > Institut de Dentisterie]
Marques Dias, F. [Royal Observatory, Blackford Hill, Edinburgh EH9 3HJ]
Martayan, C. [ > > ]
Morel, Thierry mailto [Université de Liège - ULg > AGO > GAPHE > >]
Pittard, J. M. [ > > ]
Pollock, A. M. T. [ > > ]
Rauw, Grégor mailto [Université de Liège - ULg > AGO > GAPHE > >]
Reinecke, N. [ > > ]
Ribeiro, J. [ > > ]
Romeo, N. [ > > ]
Sánchez-Gallego, J. R. [ > > ]
DOSSANTOS, Elisabeth [ > > ]
Schanne, L. [ > > ]
Stahl, O. [ > > ]
Stober, Ba [ > > ]
Stober, Be [ > > ]
Vollmann, K. [ > > ]
Williams, P. M. [ > > ]
1-Nov-2011
Monthly Notices of the Royal Astronomical Society
Blackwell Publishing
418
2-13
Yes (verified by ORBi)
International
0035-8711
Oxford
United Kingdom
[en] binaries: general ; stars: fundamental parameters ; stars: winds ; outflows ; stars: Wolf-Rayet
[en] We present the results from the spectroscopic monitoring of WR 140 (WC7pd + O5.5fc) during its latest periastron passage in 2009 January. The observational campaign consisted of a constructive collaboration between amateur and professional astronomers. It took place at six locations, including Teide Observatory, Observatoire de Haute Provence, Dominion Astrophysical Observatory and Observatoire du Mont Mégantic. WR 140 is known as the archetype of colliding-wind binaries and it has a relatively long period (?8 yr) and high 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 and colliding-wind geometry.
http://hdl.handle.net/2268/105090
10.1111/j.1365-2966.2011.19035.x
http://adsabs.harvard.edu/abs/2011MNRAS.418....2F

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