BV photometry of the ultracompact binary star GP Com
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We present optical B and V band photometry of GP Com - an ultracompact binary (orbital period 47 minutes) consisting of an accreting white dwarf and helium secondarycomponent. Our data set contains 7.7 hours observations in V band with the 2.0m telescope and 2.9 hours simultaneous observations in B and V bands with the 1.5m telescope of the Rozhen National Astronomical Obsevatory, Bulgaria. The observations cover about 13 orbital periods.
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2026-02-25
