Radial velocity study of the pulsating subdwarf B star and possible Type Ia supernova progenitor KPD 1930+2752

Details Radial velocity study of the pulsating subdwarf B star and possible Type Ia supernova progenitor KPD 1930+2752 Radial velocity study of the pulsating subdwarf B star and possible Type Ia supernova progenitor KPD 1930+2752

May 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002mnras.332...34w&link_type=abstract

Monthly Notices of the Royal Astronomical Society, Volume 332, Issue 1, pp. 34-36.

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10

Binaries: Spectroscopic, Stars: Individual: Kpd 1930+2752, Subdwarfs, Stars: Variables: Other

Scientific paper

We report the results of a high-time-resolution radial velocity study of the subdwarf B star and possible Type Ia supernova progenitor KPD 1930+2752. There were no significant peaks in the power spectrum of the velocity curve above our detection limit, about 4kms-1 , at the frequencies where peaks arising from pulsation were present in the photometric data of previous researchers. We report an orbital velocity amplitude, 348.5+/-1kms-1 , in agreement with that reported by previous investigators. We find an orbital period of P =0.09509308+/-0.00000015d based on our data and the ephemeris of Maxted et al.

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