Two new rapidly oscillating AP stars - HD 60435 and HD 203932

Details Two new rapidly oscillating AP stars - HD 60435 and HD 203932 Two new rapidly oscillating AP stars - HD 60435 and HD 203932

Aug 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984mnras.209..841k&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 209, Aug. 15, 1984, p. 841-850.

Astronomy and Astrophysics

Astronomy

28

A Stars, Astronomical Photometry, Peculiar Stars, Stellar Oscillations, Amplitudes, High Resolution, Light Curve

Scientific paper

Two new rapidly oscillating Ap stars HD 60435 and HD 203932 have been found. HD 60435 is the largest amplitude rapidly oscillating AP star with a peak-to-peak variability of less than about 15.7 mmag. HD 203932 is the smallest with a variability of 2.4 mmag. A qualitative description of the frequency pattern in HD 60435 is given on the basis of 56 hours of observation performed in the course of 16 nights. A frequency analysis of HD 203932 obtained during 29 hours of observation shows the presence of one frequency at 10.09724 per hour and 5.9422 min with a semi-amplitude of 0.65 mmag. A list is given of the nine known rapidly oscillating Ap stars and their references.

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