HM Sge: photographic observations, evolution of the light curve

Details HM Sge: photographic observations, evolution of the light curve HM Sge: photographic observations, evolution of the light curve

Oct 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998atsir1557...15k&link_type=abstract

Astronomicheskij Tsirkulyar, no. 1557

Astronomy and Astrophysics

Astronomy

Scientific paper

The analysis of the light curve variation of HM Sge was made on the basis of 307 plates taken with the 40-cm astrograph (Crimean Station of the Sternberg Institute) in 1960-1991. A detailed analysis has shown that the light curve is a superposition of two types of oscillations. The IR light curve with the amplitude of 2 mag can find its reliable explanation in reflection effects. On the base of its variability, HM Sge must be classified as a new class of cataclysmic stars with nova-like phenomena in bursts. One of the components of such a system with a long orbital period is usually a giant.

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