The beat period of Y Carinae.
Autocorrelation analysis of the photoelectric observations of Y Car has shown two periodicities present (a) the primary wave of period 3'639760 days with amplitude AV = o's8, AB = 0'78, and (b) the secondary wave of period 2'559 days with amplitude AV = o'28, AB = 0'35. The period ratio is 0'7031.
Monthly Notices of the Royal Astronomical Society
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