A new frequency analysis of photometric observations of the β Cephei star IL Velorum

Details A new frequency analysis of photometric observations of the β Cephei star IL Velorum A new frequency analysis of photometric observations of the β Cephei star IL Velorum

Jul 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994a%26as..106...79h&link_type=abstract

Astronomy and Astrophysics Suppl. 106, 79-85 (1994)

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3

Stars: Early-Type, Stars: Individual Il Vel, Stars: Oscillations, Stars: Variables: Other

Scientific paper

We present a new frequency-analysis of Johnson UBV-data of the β Cephei star IL Vel, obtained between 1977 and 1979. This new analysis was inspired by more recent measurements of IL Vel in the Walraven five-colour photometric system. These data suggested the presence of frequencies not found in the original analysis of the UBV-data. From the new analysis, we conclude that four frequencies can be identified with certainty in the variations of IL Vel: f_0_=5.464973+/-0.000005, f_1_=5.363229+/-0.000006, f_2_=5.48838+/-0.00002 and f_3_=5.44184+/-0.00003, in cycles per day. The frequencies f_0_, f_2_ and f_3_ form a closely spaced triplet.

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