Long-term photometry of be stars .2. Periodic variations on time scales of days to months
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1996
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Abstract
Stromgren differential uvby photometry of 4 Be stars is analysed. The data were taken during the time interval 1983-1994 in the framework of the Long-Term Photometry of Variables project at La Silla. We detected in these four stars periodic photometric variations with periods between 4 and 93 days. The two cases with the longest periods (FT CMa with P = 87.(d)9 and FY CMa with P = 92.(d)7) did not have any previously known periodic variability. In three of the four cases the periodic oscillation was coherent and always present during the 10 years of monitoring.
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stars, emission-line, Be, stars, individual, 10 CMa, FY CMa, HR 4074, HD 173219