Photoelectric observations of CK Bootis

Details Photoelectric observations of CK Bootis Photoelectric observations of CK Bootis

Dec 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986a%26as...66..281a&link_type=abstract

Astronomy and Astrophysics Supplement Series (ISSN 0365-0138), vol. 66, no. 3, Dec. 1986, p. 281-302. Sponsorship: Scientific an

Astronomy and Astrophysics

Astrophysics

10

Astronomical Photometry, Brightness, Eclipsing Binary Stars, Periodic Variations, Stellar Color, Ephemerides, Radial Velocity, Starspots, Variability

Scientific paper

Photoelectric observations of W UMa binary CK Bootis made between 1976 and 1982 are presented and changes in the light curves discussed. The observed depths of primary and secondary minima interchange, most of the variation being in the primary minimum. There is a small but definite change of colour of the system with no difference detected between the minima. Brightness variation is consistent with a starspot cycle of approximately 7 years.

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