Stromgren photometry of three double mode high amplitude Beta Scuti stars

Details Stromgren photometry of three double mode high amplitude Beta Scuti stars Stromgren photometry of three double mode high amplitude Beta Scuti stars

Apr 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992a%26as...93..189r&link_type=abstract

Astronomy and Astrophysics Supplement Series (ISSN 0365-0138), vol. 93, April 1992, p. 189-209. Research supported by Junta de A

Astronomy and Astrophysics

Astrophysics

23

Cepheid Variables, Stellar Spectrophotometry, Ubv Spectra, Fourier Transformation, Interstellar Extinction, Power Spectra, Stellar Oscillations

Scientific paper

uvby-beta photoelectric photometric observations of the three double-mode high-amplitude Beta-Scuti stars AE UMa, RV Ari and BP Peg are presented. Periodogram analyses are performed using the Fourier Transform Method. In all three stars the power spectra are complex, and a large number of frequencies are identified. For each star, all these frequencies are shown to be harmonics or combinations of two main frequencies nu1 and nu2 corresponding to the fundamental and first radial pulsation modes, respectively. Intrinsic b - y, m1, and c1 values are derived and the physical parameters of these stars are determined.

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