Asteroseismology of HD 129929: Core Overshooting and Nonrigid Rotation

Details Asteroseismology of HD 129929: Core Overshooting and Nonrigid Rotation Asteroseismology of HD 129929: Core Overshooting and Nonrigid Rotation

Jun 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003sci...300.1926a&link_type=abstract

Science, Volume 300, Issue 5627, pp. 1926-1928 (2003).

Physics

89

Scientific paper

We have gathered and analyzed 1493 high-quality multicolor Geneva photometric data taken over 21 years of the B3V star HD 129929. We detect six frequencies, among which appear the effects of rotational splitting with a spacing of ~0.0121 cycles per day, which implies that the star rotates very slowly. A nonadiabatic analysis of the oscillations allows us to constrain the metallicity of the star to Z ∈ [0.017,0.022], which agrees with a similar range derived from spectroscopic data. We provide evidence for the occurrence of core convective overshooting in the star, with αov = 0.10 +/- 0.05, and we rule out rigid rotation.

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