Asteroseismology of HD 129929: Core overshooting and nonrigid rotation

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Abstract

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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CITATION STYLE

APA

Aerts, C., Thoul, A., Daszyńska, J., Scuflaire, R., Waelkens, C., Dupret, M. A., … Noels, A. (2003). Asteroseismology of HD 129929: Core overshooting and nonrigid rotation. Science, 300(5627), 1926–1928. https://doi.org/10.1126/science.1084993

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