Astronomy and Astrophysics – Astrophysics
Scientific paper
Aug 1987
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987a%26as...70..247m&link_type=abstract
Astronomy and Astrophysics Supplement Series (ISSN 0365-0138), vol. 70, no. 2, Aug. 1987, p. 247-255.
Astronomy and Astrophysics
Astrophysics
4
Astronomical Photometry, B Stars, Peculiar Stars, Stellar Oscillations, Variable Stars, A Stars, Light Curve, Magnetic Stars
Scientific paper
The Bp-Si star HD 92664 has been observed in Geneva photometry during seven nights in order to detect possible periodicities of about one hour or more in the vicinity of the phase of maximum magnetic field intensity. No periodic variation was found with periods shorter than 2 hours. Frequency analysis shows some peaks near 2 and 3 hours, but they are shown to be due to atmospheric perturbations. It is concluded that HD 92664 exhibits no periodic variations shorter than a few hours with an amplitude larger than 0.75 millimagnitude. The rotational period is confirmed and the corresponding light curve is shown for the magnitudes of the Geneva system and for the Δ(V1-G) peculiarity parameter.
Megessier C.
North Pierre
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