Periodical features in the Lc variable star BU Geminorum during the years 1972 - 1977.

Details Periodical features in the Lc variable star BU Geminorum during the years 1972 - 1977. Periodical features in the Lc variable star BU Geminorum during the years 1972 - 1977.

Feb 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985geocs...6.....b&link_type=abstract

GEOS Circular on Semi-Regular Variables, No. SR 6, 9 p. (1985)

Computer Science

Irregular Variables:Light Curves, Periods

Scientific paper

The results of the observations of BU Gem, made by the GEOS observers during the years 1972 to 1977 are presented. Starting from the total of 1034 visual magnitude estimates a mean light curve has been calculated via the computerized method. From the curves obtained, we put in evidence a weak semi-regular variability of the star with a period of about 240 days and a more marked irregular fluctuation with a time-scale of a thousand days. There is no evidence of any eclipses caused by suggested duplicity of the star, the red supergiant being the main responsible for the light variations. On the basis of the photometric behaviour, a classification as an Lc is suggested for BU Gem.

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