Open Access

Fig. 6.

image

Bottom panel: evolution of the angular velocity as a function of time for models computed with the prescriptions for Dh from Mathis et al. (2004), Zahn (1992), and that of the present paper with the three different characteristic time scales for turbulence (black, red, green (τ = 1/S), blue (τ = 1/(2Ω + S)) and magenta (τ = 1/NΩ), respectively). Scaled on the left is the rotational period in days and on the right the angular velocity in solar units with Ω = 2.86 × 10−6 s−1. Each cross represents a star belonging to an open cluster which age and mass (between 1.4 and 1.6 M) have been taken from literature. All observational data are taken from Gallet & Bouvier (2015) and Bouvier et al. (2014) and references therein. The solid lines show the evolution of the surface rotation, and dashed lines the evolution of the mean radiative core rotation rate. Top panel: evolution of the normalised core to surface differential rotation rate for the six 1.0 M, Z models as colour-coded in Fig. 2.

Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.

Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.

Initial download of the metrics may take a while.