Invited review abstract

The early evolution of low-mass stars and brown dwarfs
Isabelle Baraffe

Abstract

I will discuss the early evolution of low mass stars and brown dwarfs and will analyse the main uncertainties in current evolutionary models, including the effects of rotation, magnetic field and early accretion history on young object's structure.
Special attention will be paid to the well known spread in HRD observed in star formation regions and young clusters for objects of a few Myr old and to the lithium depletion, used as an age indicator and a criterion for cluster membership for low mass stars