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Is WR 103 (WC9) as violent as the WN8 stars?

Published online by Cambridge University Press:  25 May 2016

Pieter M. Veen ,
Arnout M. van Genderen ,
Karel A. van der Hucht  and
Chris Sterken
Pieter M. Veen
Affiliation:
Leiden Observatory, PO Box 9513, NL-2300 RA Leiden, the Netherlands
Arnout M. van Genderen
Affiliation:
Leiden Observatory, PO Box 9513, NL-2300 RA Leiden, the Netherlands
Karel A. van der Hucht
Affiliation:
SRON, Sorbonnelaan 2, NL-3584 CA Utrecht, the Netherlands
Chris Sterken
Affiliation:
University of Brussels (VUB), Pleinlaan 2, B-1050 Brussels, Belgium

Abstract

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We collected photometric data of WR 103 (HD 164270, WC9), both in the Walraven system and in the Strömgren system. Figure 1 presents one intense monitoring run, performed in 1990 by R. van Ojik. We suggest to describe the light-curve as a saw-tooth with a time-scale of roughly 0.5 day. Alhough we confirm a cyclic light-variation of the object with an amplitude of ∼ 0.05 mag, our data do not support the period of P = 0.88 d found by Isserstedt & Moffat (1981) (see also Moffat et al. 1986; Balona et al. 1989).

Type
Part 2. Models for single star evolution of massive stars: wind + atmosphere + interior
Information
Symposium - International Astronomical Union , Volume 193: Wolf-Rayet Phenomena in Massive Stars and Starburst Galaxies , 1999 , pp. 261 - 262
Copyright
Copyright © Astronomical Society of the Pacific 1999 

References

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