Abstract
The question of whether the effects of different initial states persist during the main sequence is important, since it could shed light on the pre-main sequence phase.
In this work we discuss the effects of different initial states on the rotation profile during the main-sequence. We consider both solar-type stars and higher-mass stars. Solar-type stars are fully convective when they start their pre-main sequence evolution. They are braked by magnetic winds during the main sequence, and the effects of the initial conditions is soon forgotten. Lithium abundance, however, is a proxy for the rotation velocity at the ZAMS; it remains different for different initial conditions throughout the main sequence.
Higher-mass stars are not braked by winds, and they do not start their pre-main sequence evolution fully convective. Therefore, the question as to their initial rotation profiles may well be asked. We show that different initial rotation profiles lead to different profiles well into the main sequence. If we want to describe accurately stellar internal rotation, initial conditions need to be carefully considered.
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Marques, J.P., Goupil, M.J. (2013). The Influence of Initial Conditions on Stellar Rotation History. In: Goupil, M., Belkacem, K., Neiner, C., Lignières, F., Green, J. (eds) Studying Stellar Rotation and Convection. Lecture Notes in Physics, vol 865. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-33380-4_4
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DOI: https://doi.org/10.1007/978-3-642-33380-4_4
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