A new period variation in BW Vulpeculae

Details A new period variation in BW Vulpeculae A new period variation in BW Vulpeculae

Apr 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990a%26a...230..304c&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 230, no. 2, April 1990, p. 304-306.

Astronomy and Astrophysics

Astrophysics

6

Cepheid Variables, Companion Stars, Periodic Variations, Radial Velocity, Stellar Evolution, Stellar Spectrophotometry

Scientific paper

New photometric observations show that the pulsation period of BW Vulpeculae has increased by 0.28 s between 1979 and 1982. This new period change makes the pulsation somewhat unstable during the three years. During the transient phase between the two values of the period, cycle-to-cycle variations, both in the amplitude and in the period, appear. The new observations do not support interpretations based on continuous or sinusoidal variations of the period.

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