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- Spectroscopic follow-up of the colliding-wind binary WR140 during the 2009 January periastron passage
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Spectroscopic follow-up of the colliding-wind binary WR140 during the 2009 January periastron passage
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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.
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About: R. Fahed
Université de Montréal, Montréal, Canada
About: A. F. J. Moffat
Université de Montréal, Montréal, Canada
About: J. Zorec
Institut d’Astrophysique de Paris, Paris, France
About: T. Eversberg
Schnörringen Telescope Science Institute, Köln, Germany
About: A. N. Chené
Herzberg Institute of Astrophysics, Victoria, Canada
About: F. Alves
MONS pro-am collaboration
About: W. Arnold
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About: T. Bergmann
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About: L. F. Gouveia Carreira
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About: F. Marques Dias
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About: A. Fernando
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About: J. Sanchez Gallego
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About: T. Hunger
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About: J. Knapen
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About: R. Leadbeater
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About: T. Morel
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About: G. Rauw
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About: N. Reinecke
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About: J. Ribeiro
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About: N. Romeo
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About: E. M. dos Santos
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About: L. Schanne
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About: O. Stahl
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About: Ba. Stober
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About: Be. Stober
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About: N. G. Correia Viegas
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About: K. Vollmann
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