The determination of the rotational periods of rapidly oscillating AP stars from their mean light variations. IV - HD 60435

Details The determination of the rotational periods of rapidly oscillating AP stars from their mean light variations. IV - HD 60435 The determination of the rotational periods of rapidly oscillating AP stars from their mean light variations. IV - HD 60435

Mar 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990mnras.243..289k&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 243, March 15, 1990, p. 289-292. Research supported by

Astronomy and Astrophysics

Astronomy

11

A Stars, Light Curve, Magnetic Stars, Peculiar Stars, Stellar Oscillations, Stellar Rotation, Astronomical Photometry, Cool Stars, Phase Diagrams, Stellar Luminosity

Scientific paper

The rotation period of the rapidly oscillating Ap star HD 60435 was determined to be P(rot) = 7.6793 + or - 0.0006 d. The mean light curves show a double wave indicating that both magnetic poles are seen during the rotation cycle. The time of mean light extremum coincides with pulsation maximum, indicating that HD 60435 is an oblique pulsator. With the rotation period unambiguously determined, the earlier suggestion of Matthews et al. (1986, 1987) that the lifetimes of some of the pulsation modes in HD 60435 are less than one rotation period is confirmed.

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