![Constraints on stellar rotation and planet mass. The dark-red and light-red regions are the 1-σ and 2- σ seismic constraints on stellar rotation in the plane (Ω / ΩSun) - (sin i), where Ω is the bulk angular velocity, ΩSun / 2 π= 0.424 μHz is the solar Ca Constraints on stellar rotation and planet mass. The dark-red and light-red regions are the 1-σ and 2- σ seismic constraints on stellar rotation in the plane (Ω / ΩSun) - (sin i), where Ω is the bulk angular velocity, ΩSun / 2 π= 0.424 μHz is the solar Ca](/sites/default/files/styles/crop_square_2_2_to_320px/public/images/news/resultados123_133.jpg?itok=DOMrSWxt)
Rotation is thought to drive cyclic magnetic activity in the Sun and Sun-like stars. Stellar dynamos, however, are poorly understood owing to the scarcity of observations of rotation and magnetic fields in stars. Here, inferences are drawn on the internal rotation of a distant Sun-like star by studying its global modes of oscillation. We report asteroseismic constraints imposed on the rotation rate and the inclination of the spin axis of the Sun-like star HD52265, a CoRoT prime target known to host a planetary companion. These seismic inferences are remarkably consistent with an independent
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