Astronomy and Astrophysics – Astronomy
Scientific paper
Aug 1998
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998aj....116..895s&link_type=abstract
The Astronomical Journal, Volume 116, Issue 2, pp. 895-907.
Astronomy and Astrophysics
Astronomy
7
Stars: Binaries: Eclipsing, Stars: Mass Loss, Stars: Rotation, Stars: Spots
Scientific paper
As a part of our study of eccentric eclipsing binary candidates, we have obtained complete UBV photoelectric light curves of the neglected system AK Canis Minoris. The observations were taken at Lowell Observatory in 1994 February. Two new epochs of minimum light were determined from these observations. A period study, spanning 33 years, was undertaken, and both improved linear and quadratic ephemerides were obtained. The robust period decrease determined in the quadratic ephemeris may imply magnetic braking arising from the solar-type secondary component. UBV light curves formed from our precision observations are presented. The first synthetic light-curve solution of AK CMi is presented. Our analysis reveals that AK CMi is in a near-contact, semidetached configuration with an A3 spectral type primary component and a K2 secondary filling its Roche lobe. Contrary to earlier reports that AK CMi has a displaced secondary eclipse, our secondary eclipse occurs at phase 0.5.
Carrigan Brian J.
French Julie A.
Gray Jamison D.
McDermith Richard J.
Padgen Erik E.
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