A multisite campaign on the pulsating subdwarf B star PG 1047+003

Details A multisite campaign on the pulsating subdwarf B star PG 1047+003 A multisite campaign on the pulsating subdwarf B star PG 1047+003

Mar 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002mnras.331..399k&link_type=abstract

Monthly Notices of the Royal Astronomical Society, Volume 331, Issue 2, pp. 399-406.

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Stars: Individual: Pg 1047+003 Stars: Oscillations, Subdwarfs, Stars: Variables: Other

Scientific paper

Results are presented from a multisite photometric campaign on the pulsating subdwarf B star, PG 1047+003. Approximately 98h of data were obtained from three sites, with a duty cycle of ~30 per cent. The light curve of PG 1047+003 is dominated by several frequencies in the range ~6880-7500μHz (periods 133-145s). We identify, with some confidence, 18 frequencies between 5700 and 9605μHz (104-175s) down to an amplitude of 0.0004 in fractional intensity (0.04 per cent), thus doubling the number of published pulsation frequencies for this star. These pulsations correspond to low-order and low-degree acoustic modes. Several frequency spacings near 1.05μHz suggest a rotation period for the star of 11.0d.

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