Discovery of pulsations in the AM star HD 13079

Details Discovery of pulsations in the AM star HD 13079 Discovery of pulsations in the AM star HD 13079

Nov 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999mnras.309..871m&link_type=abstract

Monthly Notices, Volume 309, Issue 4, pp. 871-874.

Physics

11

Scientific paper

Pulsation in cool main-sequence Am stars is a rare phenomenon observed in a few marginal Am stars and only one classical Am star. The chemically peculiar star HD 13079 is shown to be pulsating with a 78-min period and a peak-to-peak B amplitude of 0.02mag. The Hipparcos parallax, uvbyβ photometry and pulsations together suggest that HD 13079 is an Am star near the zero-age main sequence, and that it is a fundamental-mode pulsator on the red edge of the instability strip.

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