The WR 140 periastron passage 2009: first results from MONS and other optical sources

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. H.; Leadbeater, R.; Morel, Thierry; Rauw, Grégor; 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.

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The WR 140 periastron passage 2009: first results from MONS and other optical sources

Fahed, R.; Moffat, A. F. J.; Zorec, J. et al.

2011 • In Eversberg, Thomas; Knapen, Johan (Eds.) Stellar Winds in Interaction

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https://hdl.handle.net/2268/96670

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Keywords :

Astrophysics - Solar and Stellar Astrophysics

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 (~ 0.89). 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.

Disciplines :

Space science, astronomy & astrophysics

Author, co-author :

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.

More authors (22 more)

Language :

English

Title :

The WR 140 periastron passage 2009: first results from MONS and other optical sources

Publication date :

01 January 2011

Audience :

International

Main work title :

Stellar Winds in Interaction

Editor :

Eversberg, Thomas

Knapen, Johan

Pages :

1430

Additional URL :

http://adsabs.harvard.edu/abs/2011arXiv1101.1430F

Commentary :

5 pages, 5 figures, Published in proceedings of "Stellar Winds in Interaction", editors T. Eversberg and J.H. Knapen. Full proceedings volume is available on http://www.stsci.de/pdf/arrabida.pdf

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