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(Intrinsic) Variations of Wolf-Rayet Stars

Published online by Cambridge University Press:  03 August 2017

A.M. van Genderen ,
M.A.W. Verheijen ,
E. van Kampen ,
F.H.A. Robijn ,
R. van der Heiden ,
B.P.M. van Esch ,
H. Greidanus ,
R.S. le Poole ,
R. A. Reijns  and
K.A. van der Hucht
...Show all authors
A.M. van Genderen
Affiliation:
1Leiden Observatory, Postbus 9513 2300 RA Leiden, The Netherlands
M.A.W. Verheijen
Affiliation:
1Leiden Observatory, Postbus 9513 2300 RA Leiden, The Netherlands
E. van Kampen
Affiliation:
1Leiden Observatory, Postbus 9513 2300 RA Leiden, The Netherlands
F.H.A. Robijn
Affiliation:
1Leiden Observatory, Postbus 9513 2300 RA Leiden, The Netherlands
R. van der Heiden
Affiliation:
1Leiden Observatory, Postbus 9513 2300 RA Leiden, The Netherlands
B.P.M. van Esch
Affiliation:
1Leiden Observatory, Postbus 9513 2300 RA Leiden, The Netherlands
H. Greidanus
Affiliation:
1Leiden Observatory, Postbus 9513 2300 RA Leiden, The Netherlands
R.S. le Poole
Affiliation:
1Leiden Observatory, Postbus 9513 2300 RA Leiden, The Netherlands
R. A. Reijns
Affiliation:
1Leiden Observatory, Postbus 9513 2300 RA Leiden, The Netherlands
K.A. van der Hucht
Affiliation:
2SRON Space Research Utrecht, Sorbonnelaan 2 3584 CA Utrecht, The Netherlands
H. E. Schwarz
Affiliation:
3ESO, Casilla 19001 Santiago 19, Chile
C.W.H. de Loore
Affiliation:
4Astrophysical Institute, Pleinlaan 2 1050 Brussels, Belgium
E. Kuulkers
Affiliation:
5Astronomical Institute, Roetersstraat 15 1018 WB Amsterdam, The Netherlands
L. Spijkstra
Affiliation:
5Astronomical Institute, Roetersstraat 15 1018 WB Amsterdam, The Netherlands

Abstract

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Twenty - two Wolf-Rayet stars (12 of type WN and 10 of type UC) were observed in the years 1986-1990 with the VBLUW photometer of Walraven. Eight (WC and WN) objects appeared to be constant. Five of the in total 14 variable objects will be discussed in the present paper: UR46 (WN3 pec), WR50 (WC6+a), WR55 (WN8), WR86 (WC7) and WR123 (WN8).

Simultaneous spectroscopy is made for WR46 and WR50. These results will be also discussed in short.

Type
Session III. Intrinsic Variability
Information
Symposium - International Astronomical Union , Volume 143: Wolf–Rayet Stars and Interrelations with other Massive Stars in Galaxies , 1991 , pp. 129 - 146
Copyright
Copyright © Kluwer 1991