Astronomy and Astrophysics – Astronomy
Scientific paper
Jul 1987
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987mnras.227..213s&link_type=abstract
Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 227, July 1, 1987, p. 213-240.
Astronomy and Astrophysics
Astronomy
20
B Stars, Stellar Luminosity, Stellar Spectrophotometry, Ubv Spectra, Variable Stars, Astronomical Catalogs, Data Reduction, Statistical Analysis
Scientific paper
Repeated UBV photometric measurements were made of the 86 bright Be stars south of declination -20°, and a network of comparison stars was set up. From a statistical study of the differential photometry it was found that short- or intermediate-term variability seems to be occurring in about half of the Be stars, and to be more evident in the stars of earlier spectral type. It was also possible to identify 11 individual short- or intermediate-term variables. Four of these (all of early B spectral type) appear to exhibit significant variability on a time-scale of a day or less. More intensive observations of one of these stars, 28ω CMa, indicate short-term variations consistent with the published spectroscopic period of 1.37 day.
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