Bibcode
DOI
Arevalo, M. J.; Lazaro, C.; Fuensalida, J. J.
Referencia bibliográfica
Astronomical Journal (ISSN 0004-6256), vol. 96, Sept. 1988, p. 1061-1071.
Fecha de publicación:
9
1988
Número de citas
15
Número de citas referidas
15
Descripción
The authors present simultaneous UBVRI and infrared JHKL light curves of
the short-period RS CVn system ER Vul, and study both the mean level and
depths of eclipses. They also point out some peculiar features, present
in the light curves over time, which are frequently shown by other RS
CVn short-period systems at about the same phase values, suggesting a
common origin. It seems difficult, however, to reconcile the usual
interpretation based on the presence of starspots with the observed time
variations at the mean level and depth of the eclipses. The photometric
colors indicate ultraviolet and infrared excesses, which seem to
originate in hot circumstellar matter.