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A photometric study of V608 Cam: apparent period changes as a result of surface activity

Publikace na Matematicko-fyzikální fakulta |
2022

Tento text není v aktuálním jazyce dostupný. Zobrazuje se verze "en".Abstrakt

The VRI light curves were measured for the low-mass eclipsing binary V608 Cam as a part of our long-term observational project for studying of eclipsing binaries with a short orbital period. The TESS light curve solution in PHOEBE results to the detached configuration, where the temperature of the primary component was fixed to T1 = 5300 K according to GAIA results, which gives us T2 = 4110 +/- 50 K for the secondary.

The spectral type of the primary component was derived to be K0 and the photometric mass ratio was estimated q = 0.92 +/- 0.07. Characteristics and temporal variation of the dark region on the surface of the secondary component were estimated and are attributed to apparent period changes of this eclipsing binary with a cycle of about 2.4 yr.