Astronomy and Astrophysics – Astronomy
Scientific paper
Jul 1993
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993mnras.263..273m&link_type=abstract
Monthly Notices of the Royal Astronomical Society, Vol. 263, NO.2/JUL15, P. 273, 1993
Astronomy and Astrophysics
Astronomy
4
Stars: Chemically Peculiar - Stars: Individual: Hd 84041 - Stars: Oscillations - Stars: Rotation
Scientific paper
We present 117 h of high-speed Johnson B observations of HD 84041, obtained during 1992 at the South African Astronomical Observatory and the Cerro Tololo Inter-American Observatory. We also present 14 h of previously unpublished B high-speed photometry acquired in 1991. These observations show that HD 84041 pulsates in several p-modes with periods near 15 min. The amplitude of the oscillations is modulated in such a complex way that the modulating frequencies cannot be identified with certainty. We present 26 nights of differential UBVRI photometry acquired at the SAAO which we use to determine the rotation period of HD 84041, Prot=3.69±0.01 d. The mean light variations have a double-wave nature, which indicates that both magnetic (pulsation) poles are seen, but from different aspects.
Koen Chris
Kreidl Tobias J.
Kurtz Don W.
Marang Freddy
Martinez Pablo
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