Photoelectric observations of the peculiar eclipsing variable ER Vul were obtained in blue and yellow light, in the 1981 and 1982 observing seasons. The light curves suffer to change in short time-intervals. The wave-like distortion superimposed on the light curves is clearly seen, but sometimes there is no indication about its existence. The migration period has been estimated roughtly about eight months. Moreover, small-amplitude light fluctuations in the light curves are noticeable. These variations seem to be occur randomly. When the IUE and optical observations are taken into consideration together it is strongly suggested that both of the components in the system ER Vul are too active.
This is a preview of subscription content, log in to check access.
Buy single article
Instant access to the full article PDF.
Price includes VAT for USA
Abrami, A. and Cester, B.: 1963,Oss. Astron. Trieste, No. 320.
Al-Naimiy, H. M. K.: 1978,Inf. Bull. Var. Stars, No. 1481.
Al-Naimiy, H. M. K.: 1981,Astron. Astrophys. Suppl. Ser. 43 85.
Bond, H. E.: 1970,Publ. Astron. Soc. Pacific 82, 321.
Eggen, O. J.: 1978,Inf. Bull. Var. Stars, No. 1426.
Hall, D. S.: 1976,Proc. of IAU Colloq., No. 29, Budapest, Part 1, p. 298.
Ibanoĝlu, C., Akan, M. C., Evren, S., and Tunca, Z.:Inf. Bull. Var. Stars, No. 2782.
Kadouri, T. H.: 1982,Inf. Bull. Var. Stars, No. 2057.
Northcott, R. J. and Bakos, G. A.: 1956,Astron. J. 61, 188.
Northcott, R. J. and Bakos, G. A.: 1967,Astron. J. 72, 89.
About this article
Cite this article
İbanoĝlu, C., Evren, S. & Tunca, Z. Light curve variations in ER vulpeculae. Astrophys Space Sci 136, 225–229 (1987). https://doi.org/10.1007/BF00642114
- Light Curve
- Yellow Light
- Curve Variation
- Optical Observation