The possible multiperiodic variable Be star KY Andromedae

Details The possible multiperiodic variable Be star KY Andromedae The possible multiperiodic variable Be star KY Andromedae

Nov 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988a%26as...76..137p&link_type=abstract

Astronomy and Astrophysics Supplement Series (ISSN 0365-0138), vol. 76, no. 1, Nov. 1988, p. 137-144. Research supported by the

Astronomy and Astrophysics

Astrophysics

4

B Stars, Irregular Variable Stars, Stellar Spectrophotometry, Ubv Spectra, Charge Coupled Devices, Light Curve, Power Spectra, Stellar Envelopes, Stellar Rotation

Scientific paper

Broad-band UBV photometric measurements of the variable Be star KY Andromedae obtained in September 1982 have been analysed in search of possible periodicity. Periodogram analysis has shown that one dominant period of 0.751 d is present in the data. Further periods are tentatively identified, but possible multiperiodicity will still have to be confirmed with a larger data set. Besides the claimed multiperiodic variations, the color behaviour is also similar to that of non-radial pulsators of the 53 Persei type. At least one other explanation is possible in terms of stellar rotation combined with irregular intrinsic circumstellar variations.

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