The pulsating extreme helium star BD+13 deg 3224 (V652 Her). III - The radial velocity curve

Details The pulsating extreme helium star BD+13 deg 3224 (V652 Her). III - The radial velocity curve The pulsating extreme helium star BD+13 deg 3224 (V652 Her). III - The radial velocity curve

Aug 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986mnras.221..975j&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 221, Aug. 15, 1986, p. 975-991. SERC-supported research

Astronomy and Astrophysics

Astronomy

15

B Stars, Radial Velocity, Variable Stars, Helium, Light Curve, Stellar Gravitation, Tables (Data), Velocity Distribution

Scientific paper

New radial velocity data for the pulsating extreme helium star V652 Her (BD +13°3224) have been obtained with a time resolution of 100 s. High-frequency structure in the radial velocity curve is detected, and a comparison with previous data suggests that the detailed shape of the velocity curve is variable. The data imply that the effective surface gravity must increase by a factor of 4 at minimum radius.

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