The Cape rapidly oscillating AP star survey. I - First results

Details The Cape rapidly oscillating AP star survey. I - First results The Cape rapidly oscillating AP star survey. I - First results

Jun 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991mnras.250..666m&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 250, June 15, 1991, p. 666-678. Research supported by F

Astronomy and Astrophysics

Astronomy

40

A Stars, Peculiar Stars, Stellar Oscillations, Main Sequence Stars, Southern Hemisphere, Ubv Spectra

Scientific paper

The first results of a systematic survey of the roAp phenomenon in the southern hemisphere are presented. Consideration is given to survey candidates from the 464 Ap SrCrEu stars listed in the four currently available volumes of the Michigan Spectral Catalogue (1978), which cover all the HD stars in the southern sky up to delta = -12 deg. Spectra and light curves are presented for five new rapidly oscillating Ap stars discovered on 10 photometric nights spanning one month. Of particular interest is star HD 190290, because it appears to be a multimode pulsator somewhat akin to HR 1217 (which has a rich p-mode spectrum).

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