The pulsating helium star BD + 13 deg 3224

Details The pulsating helium star BD + 13 deg 3224 The pulsating helium star BD + 13 deg 3224

Oct 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981mnras.197...81h&link_type=abstract

Monthly Notices of the Royal Astronomical Society, vol. 197, Oct. 1981, p. 81-94. Research supported by the Science Research Co

Astronomy and Astrophysics

Astronomy

37

Astrometry, B Stars, Helium, Pulsars, Stellar Oscillations, Variable Stars, Line Spectra, Radial Velocity, Stellar Magnitude, Stellar Mass, Stellar Spectra, Stellar Spectrophotometry

Scientific paper

The velocity curve of the variable helium star BD + 13 deg 3224 has been determined and shown to be pulsating. By combining the velocity data with photometry, the mean radius has been deduced to be 1.6 plus or minus 0.2 solar radius, and by taking log g from neutral helium line profiles, the mass has been determined to be 0.9 +0.5, -0.3 solar mass. The gravity and composition are different from those of extreme helium stars but more similar to HD 144941.

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