Abstract
The results of analysis of new broad band U, J, K, photometric observations of WN5+O6 binary V444 Cyg are presented. Comparison to the old optical data of Cherepashchuk et al. (1984) and IR data of Hartmann (1978) shows that the optical light curve is stable over more than 10 years, while the new infrared light curves are significantly different from the Hartmann's ones. The difference between old and new infrared light curves poses a problem for clumpy structure of WR wind proposed by Cherepashchuk et al. as well as for standard smooth flow wind theory.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Cherepashchuk, A.M.: 1975,Sov. Astron. 19, 47
Cherepashchuk, A.M., Eaton, J.A., Khaliullin, Kh.F.: 1984,Ap. J. 281, 774
Cherepashchuk, A.M., Antokhin, I.I., Djapiashvili, E.B., Nadjip, A.E., Shenavrin, V.I.: 1994,Sov. Astron. , in press
Goncharsky, A.V., Cherepashchuk, A.M., and Yagola, A.G.: 1978,Numerical methods of the Solution of the Inverse Problems of Astrophysics, Nauka: Moscow
Hamann, W.-R. and Schwarz, E.: 1992,Astron. Astrophys. 261, 523
Hartmann, L.: 1978,Ap.J. 221, 193
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Antokhin, I. Analysis of optical and IR light curves of the WR binary V444 Cygni: are clumps still present?. Astrophys Space Sci 221, 239–248 (1994). https://doi.org/10.1007/BF01091156
Issue Date:
DOI: https://doi.org/10.1007/BF01091156