Light curve variations of RT Lacertae

Details Light curve variations of RT Lacertae Light curve variations of RT Lacertae

Sep 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980ap%26ss..72...61i&link_type=abstract

Astrophysics and Space Science, vol. 72, no. 1, Sept. 1980, p. 61-70.

Astronomy and Astrophysics

Astrophysics

12

Eclipsing Binary Stars, Light Curve, Variable Stars, Stellar Spectrophotometry, Ubv Spectra

Scientific paper

The eclipsing variable RT Lac, which is classified as an RS CVn-type binary by Hall, was observed in two colors, B and V, during the summer seasons of 1978 and 1979. The observations made during two successive seasons indicate that, outside eclipses, the system has brightened by about 0.12 and 0.15 magnitudes on average in B and V, respectively. Moreover, RT Lac was even fainter when observed by Milone in 1965. While the total brightness of the system remained unchanged at mid-secondary, it increased at mid-primary and outside eclipses. This may be interpreted as indicating that the cooler component is responsible for the peculiar light variations.

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