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Symposium - International Astronomical Union Symposium - International Astronomical Union

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Variable dust formation by the double-line spectroscopic binary WR 70 (HD 137603, WC9vd+B0I)

Published online by Cambridge University Press:  26 May 2016

Peredur M. Williams ,
Karel A. van der Hucht  and
Fred Marang
Peredur M. Williams
Affiliation:
Institute for Astronomy, University of Edinburgh, Royal Observatory, Blackford Hill, Edinburgh EH9 3HJ, Scotland, UK
Karel A. van der Hucht
Affiliation:
SRON Nationaal Instituut voor Ruimteonderzoek, Sorbonnelaan 2, NL-3584 CA Utrecht, Nederland
Fred Marang
Affiliation:
South African Astronomical Observatory, P.O. Box 9, Observatory, 7935, South Africa
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Abstract

Infrared photometry of the WC9vd+B0I spectroscopic binary WR 70 over two decades shows variable dust emission. The variations are relatively slow and show evidence for an underlying process with a period P = 1045 ± 60 d, together with modulation on shorter and longer time-scales.

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. 261 - 262
Copyright
Copyright © Astronomical Society of the Pacific 2003 

References

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Niemela, V.S. 1995, in: van der Hucht, K.A. & Williams, P.M. (eds), Wolf-Rayet Stars: Binaries, Colliding Winds, Evolution, Proc. IAU Symposium No. 163 (Dordrecht: Kluwer), p. 223.CrossRefGoogle Scholar
Pitault, A., Epchtein, N., Gómez, A.E., Lortet, M.C. 1983 A&A 120, 53.Google Scholar
Williams, P.M., van der Hucht, K.A., Thé, P.S. 1987, A&A 182, 91.Google Scholar

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Variable dust formation by the double-line spectroscopic binary WR 70 (HD 137603, WC9vd+B0I)
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