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

Bibcode
2011BSRSL..80..668F
Fahed, R.; 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, T.; Rauw, G.; Reinecke, N.; Ribeiro, J.; Romeo, N.; Dos Santos, 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.
Bibliographical reference

Société Royale des Sciences de Liège, Bulletin, vol. 80, p. 668-672 (Proceedings of the 39th Liège Astrophysical Colloquium, held in Liège 12-16 July 2010, edited by G. Rauw, M. De Becker, Y. Nazé, J.-M. Vreux, P. Williams)

Advertised on:
1
2011
Number of authors
32
IAC number of authors
0
Citations
8
Refereed citations
6
Description
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.
Type
Non-refereed

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