DOI | Resolve DOI: https://doi.org/10.1111/j.1365-2966.2011.19035.x |
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Author | Search for: Fahed, R.; Search for: Moffat, A. F. J.; Search for: Zorec, J.; Search for: Eversberg, T.; Search for: Chené, A. N.1; Search for: Alves, F.; Search for: Arnold, W.; Search for: Bergmann, T.; Search for: Corcoran, M. F.; Search for: Viegas, N. G. Correia; Search for: Dougherty, S. M.1; Search for: Fernando, A.; Search for: Frémat, Y.; Search for: Carreira, L. F. Gouveia; Search for: Hunger, T.; Search for: Knapen, J. H.; Search for: Leadbeater, R.; Search for: Dias, F. Marques; Search for: Martayan, C.; Search for: Morel, T.; Search for: Pittard, J. M.; Search for: Pollock, A. M. T.; Search for: Rauw, G.; Search for: Reinecke, N.; Search for: Ribeiro, J.; Search for: Romeo, N.; Search for: Sánchez-Gallego, J. R.; Search for: dos Santos, E. M.; Search for: Schanne, L.; Search for: Stahl, O.; Search for: Stober, Ba.; Search for: Stober, Be.; Search for: Vollmann, K.; Search for: Williams, P. M. |
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Affiliation | - National Research Council of Canada. NRC Herzberg Institute of Astrophysics
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Format | Text, Article |
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ISSN | 0035-8711 |
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Subject | binaries: general; stars: fundamental parameters; stars: winds, outflows; stars: Wolf-Rayet |
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Abstract | 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 Megantic. 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. |
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Publication date | 2011-10-24 |
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In | |
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Language | English |
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Peer reviewed | Yes |
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NPARC number | 19688677 |
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Export citation | Export as RIS |
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Report a correction | Report a correction (opens in a new tab) |
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Record identifier | 9b222da1-770d-487e-804e-ea15864091c3 |
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Record created | 2012-03-19 |
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Record modified | 2020-04-21 |
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