Other
Scientific paper
Feb 1990
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990mnras.242..489k&link_type=abstract
Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 242, Feb. 1, 1990, p. 489-494.
Other
10
A Stars, Cool Stars, Magnetic Stars, Stellar Oscillations, Stellar Spectrophotometry, Astronomical Observatories, Least Squares Method, Light Curve, Stellar Spectra
Scientific paper
The discovery of low-amplitude light variations with a period of 7.402 min in the cool magnetic Ap star HD 80316 is announced. High-speed photometric observations obtained during 15 hr on three nights in 1989 from the South African Astronomical Observatory are presented. A frequency analysis of those observations shows that the principal oscillation frequency in HD 80316 is nu(1) = 2.2516 + or - 0.0008 mHz which has an amplitude of 0.44 mmag. The amplitude of nu(1) is definitely modulated from night to night; other frequencies which look like rotational sidelobes of nu(1) can be identified in the frequency analysis. A list of the 14 confirmed rapidly oscillating Ap stars is given with references.
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