Photoelectric photometry of AR Lac in 1982

Details Photoelectric photometry of AR Lac in 1982 Photoelectric photometry of AR Lac in 1982

Sep 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983ap%26ss..95..401e&link_type=abstract

Astrophysics and Space Science (ISSN 0004-640X), vol. 95, no. 2, Sept. 1983, p. 401-408.

Astronomy and Astrophysics

Astrophysics

5

Eclipsing Binary Stars, Electrophotometry, Stellar Spectrophotometry, Light Curve, Orbit Calculation, Spectrum Analysis, Stellar Rotation

Scientific paper

The authors present the observations of AR Lac, which were obtained in 1982. The variations in the light curves, occurred in the time interval as short as two months, indicated that the system was very active in 1982 like in 1979. The times of the minima obtained in this study indicate that the orbital period of the system continues to decrease. The decrease in the period was recalculated using all the times of minima obtained photoelectrically between 1961 and 1982 and found to be 17.0±1.4 s century-1.

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