At the Bottom of the Main Sequence: Activity and magnetic fields beyond the threshold to complete convection

  title={At the Bottom of the Main Sequence: Activity and magnetic fields beyond the threshold to complete convection},
  author={A. Reiners},
  journal={arXiv: Astrophysics},
  • A. Reiners
  • Published 14 December 2007
  • Physics
  • arXiv: Astrophysics
The bottom of the main sequence hosts objects with fundamentally different properties. At masses of about 0.3 M$_{\odot}$, stars become fully convective and at about 0.08 M$_{\odot}$ the hydrogen-burning main sequence ends; less massive objects are brown dwarfs. While stars and brown dwarfs experience very different evolutions, their inner structure has relatively little impact on the atmospheres. The generation of magnetic fields and activity is obviously connected to the threshold between… 
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