title: Asteroseismology of HD 129929: core overshooting and nonrigid rotation.
abstract: We have gathered and analyzed 1493 high-quality multicolor Geneva photometric data taken over 21 years of the B3Vstar HD 129929. We detect six frequencies, among which appear the effects of rotational splitting with a spacing of approximately 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 epsilon [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 alpha(ov) = 0.10 +/- 0.05, and we rule out rigid rotation.
authors.affiliation: Instituut voor Sterrenkunde, Katholieke Universiteit Leuven, Celestijnenlaan 200 B, B-3001 Leuven, Belgium. conny@ster.kuleuven.ac.be
authors.forename: C
authors.initials: C
authors.lastname: Aerts
authors.forename: A
authors.initials: A
authors.lastname: Thoul
authors.forename: J
authors.initials: J
authors.lastname: Daszynska
authors.forename: R
authors.initials: R
authors.lastname: Scuflaire
authors.forename: C
authors.initials: C
authors.lastname: Waelkens
authors.forename: M A
authors.initials: MA
authors.lastname: Dupret
authors.forename: E
authors.initials: E
authors.lastname: Niemczura
authors.forename: A
authors.initials: A
authors.lastname: Noels