Bulletin de la Société Royale des Sciences de Liège

0037-9565 1783-5720

 

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R. Fahed, A. F. J. Moffat, J. Zorec, T. Eversberg, A. N. Chené, F. Alves, W. Arnold, T. Bergmann, L. F. Gouveia Carreira, F. Marques Dias, A. Fernando, J. Sanchez Gallego, T. Hunger, J. Knapen, R. Leadbeater, T. Morel, G. Rauw, N. Reinecke, J. Ribeiro, N. Romeo, E. M. dos Santos, L. Schanne, O. Stahl, Ba. Stober, Be. Stober, N. G. Correia Viegas, K. Vollmann, M. F. Corcoran, S. M. Dougherty, J. M. Pittard, A. M. T. Pollock & P. M. Williams

Spectroscopic follow-up of the colliding-wind binary WR140 during the 2009 January periastron passage

(Volume 80 - Année 2011)
Article
Open Access

Abstract

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 (around 8 years) and eccentricity (around 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.

Para citar este artículo

R. Fahed, A. F. J. Moffat, J. Zorec, T. Eversberg, A. N. Chené, F. Alves, W. Arnold, T. Bergmann, L. F. Gouveia Carreira, F. Marques Dias, A. Fernando, J. Sanchez Gallego, T. Hunger, J. Knapen, R. Leadbeater, T. Morel, G. Rauw, N. Reinecke, J. Ribeiro, N. Romeo, E. M. dos Santos, L. Schanne, O. Stahl, Ba. Stober, Be. Stober, N. G. Correia Viegas, K. Vollmann, M. F. Corcoran, S. M. Dougherty, J. M. Pittard, A. M. T. Pollock & P. M. Williams, «Spectroscopic follow-up of the colliding-wind binary WR140 during the 2009 January periastron passage», Bulletin de la Société Royale des Sciences de Liège [En ligne], Volume 80 - Année 2011, 668 - 672 URL : http://popups.ulg.be/0037-9565/index.php?id=3133.

Acerca de: R. Fahed

Université de Montréal, Montréal, Canada

Acerca de: A. F. J. Moffat

Université de Montréal, Montréal, Canada

Acerca de: J. Zorec

Institut d’Astrophysique de Paris, Paris, France

Acerca de: T. Eversberg

Schnörringen Telescope Science Institute, Köln, Germany

Acerca de: A. N. Chené

Herzberg Institute of Astrophysics, Victoria, Canada

Acerca de: F. Alves

MONS pro-am collaboration

Acerca de: W. Arnold

MONS pro-am collaboration

Acerca de: T. Bergmann

MONS pro-am collaboration

Acerca de: L. F. Gouveia Carreira

MONS pro-am collaboration

Acerca de: F. Marques Dias

MONS pro-am collaboration

Acerca de: A. Fernando

MONS pro-am collaboration

Acerca de: J. Sanchez Gallego

MONS pro-am collaboration

Acerca de: T. Hunger

MONS pro-am collaboration

Acerca de: J. Knapen

MONS pro-am collaboration

Acerca de: R. Leadbeater

MONS pro-am collaboration

Acerca de: T. Morel

MONS pro-am collaboration

Acerca de: G. Rauw

MONS pro-am collaboration

Acerca de: N. Reinecke

MONS pro-am collaboration

Acerca de: J. Ribeiro

MONS pro-am collaboration

Acerca de: N. Romeo

MONS pro-am collaboration

Acerca de: E. M. dos Santos

MONS pro-am collaboration

Acerca de: L. Schanne

MONS pro-am collaboration

Acerca de: O. Stahl

MONS pro-am collaboration

Acerca de: Ba. Stober

MONS pro-am collaboration

Acerca de: Be. Stober

MONS pro-am collaboration

Acerca de: N. G. Correia Viegas

MONS pro-am collaboration

Acerca de: K. Vollmann

MONS pro-am collaboration