The Radial Velocity Variations of WR46 (WN3p)
Chapter
Abstract
Spectral observations of the WN3p star WR46 (HD 104994) obtained during June 1993 and January/February 1994 display large amplitude radial velocity variations of the strong emission lines N V 4603–19Å and HeII 4686Å, on a time scale of a fraction of a day. The most probable period found is 0.311 d, similar to the photometric period found by previous authors. The amplitude of the radial velocity variations of N V emission is almost twice that of HeII. Noting the similarity of WR46 with low mass X-ray binaries, we suggest that the emission line spectrum corresponds to that of a luminous accretion disk in an evolved binary system.
Key words
stars: Wolf-Rayet binaries accretion disk individual: WR46Preview
Unable to display preview. Download preview PDF.
References
- Cowley, A.P., Schmidtke, P.C., Hutchings, J.B.,Crampton, D., McGrath, T.K. 1993, ApJ (Letters)418, L63ADSCrossRefGoogle Scholar
- van Genderen,A.M.,van der Hucht, K.A., Larsen, I. 1990, A&A229,123ADSGoogle Scholar
- van Genderen, A.M., Verheijen, M.A.W., van der Hucht, K.A. et al. 1991, in: K.A. van der Hucht & B. Hidayat (eds.),Wolf-Rayet Stars and Interrelations with Other Massive Stars in Galaxies, Proc.IAU Symp. No. 143(Dordrecht: Kluwer), p. 129Google Scholar
- Mathewson,D.S., Ford, V.L. 1970, Mem. RAS74, 139ADSGoogle Scholar
- Pollock,A.M.T. 1987, ApJ320, 283ADSCrossRefGoogle Scholar
Copyright information
© Springer Science+Business Media Dordrecht 1995