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FUSE observations of the SMC Wolf-Rayet binary Sand 1 (WO4+O4V): atmospheric eclipses and colliding winds

Published online by Cambridge University Press:  26 May 2016

Nicole St-Louis ,
Anthony F.J. Moffat  and
Sergey V. Marchenko
Nicole St-Louis
Affiliation:
Département de physique, Université de Montréal, C.P. 6128, Succ. Centre-Ville, Montréal, QC H3C 3J7, Canada, and Observatoire du mont Mégantic, Canada
Anthony F.J. Moffat
Affiliation:
Département de physique, Université de Montréal, C.P. 6128, Succ. Centre-Ville, Montréal, QC H3C 3J7, Canada, and Observatoire du mont Mégantic, Canada
Sergey V. Marchenko
Affiliation:
Department of Physics and Astronomy, Western Kentucky University, 1 Big Red Way, Bowling Green, KY 42101-3576, USA

Abstract

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We present FUSE observations of the SMC WO4+O4V binary Sand 1. Our spectra show variations in S iv, C iii, C iv and O vi lines, which we attribute mainly to emission from the shock cone, resulting from the collision between the two winds, and to atmospheric eclipses of the O-star continuum light by the WR wind. From this variability, we deduce a cone opening angle of 120°.

Type
Part 1. Atmospheres of Massive Stars
Information
Symposium - International Astronomical Union , Volume 212: A Massive Star Odyssey: From Main Sequence to Supernova , 2003 , pp. 241 - 242
Copyright
Copyright © Astronomical Society of the Pacific 2003 

References

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