Stellar Rotation in the Era of Kepler
Jennifer van Saders

Rotation is a fundamental property of all stars and carries a wealth of information about the star itself, with deep ties to internal processes such as mixing, magnetism, and activity. However, rotation has been historically neglected: it is challenging to fully model, and classical datasets were generally too sparse to gain empirical traction. This picture is rapidly changing with the advent of large, space-based photometric monitoring campaigns, which have garnered tens of thousands of rotation periods and asteroseismic insights into internal rotational profiles. I will discuss our theoretical understanding of the rotational behavior of stars on the main sequence, subgiant branch, and lower giant branch. The comparison of these model predictions to our ever- increasing set of rotation measurements reveals that rotation can be a powerful tool for learning about stellar populations. The suite of large time-domain surveys planned for the next decade will ensure that rotation will find itself among the standard stellar observables, and is a tool worth developing.