Light curve variations in ER Vulpeculae

Details Light curve variations in ER Vulpeculae Light curve variations in ER Vulpeculae

Aug 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987ap%26ss.136..225i&link_type=abstract

Astrophysics and Space Science (ISSN 0004-640X), vol. 136, no. 2, Aug. 1987, p. 225-229.

Astronomy and Astrophysics

Astrophysics

10

Eclipsing Binary Stars, Light Curve, Peculiar Stars, Electrophotometry, Iue, Secular Variations

Scientific paper

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 roughly about eight months. Moreover, small-amplitude light fluctuations in the light curves are noticeable. These variations seem to 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.

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