Matteo Cantiello edited Abstract.tex  almost 11 years ago

Commit id: c986568d6fa8f854d2a740b2e13cc82cb6002af0

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{\bf Abstract} Stars are born rotating. Observations of stars on their main sequence reveal that the majority of stars objects  with mass above $\sim 1.5\mso$ are spinning fairly rapidly. From the zero age main sequence to the final compact stellar remnant, calculations including mechanisms for the transport of angular momentum can make predictions about the evolution in the internal angular momentum distribution. The rotational periods can be observed, providing a direct constraint of the surface rotation rate. The efficiency of internal transport mechanisms can sometimes be inferred by using indirect proxies, for example the change in the surface abundances of certain species. This is because the same instabilities and/or circulations believed to be responsible for the angular momentum transport can also displace chemicals in the radial direction. However recently it also became possible to directly probe the rotation profile of stars other than the Sun. This is thanks to asteroseismology of red giants, where the splitting of mixed modes can be used to asses the degree of differential rotation between core and envelope.