- alpha effect = rotation effects convection
- omega effect = differential rotation creates a shear
- both process produce an overall helicity in the convective zone
- Rossby number was first used in Parker 1979
- if chromospheric activity is governed by rossby number, maybe Prot is as well
Landin et al. 2010: Theoretical Values of Convective Turnover Times and Rossby Numbers (VERY HELPFUL)
- tacholine = interface between radiative zone and base of convective envelope
- produced a code (ATON 2.3) which inputs various physics of main sequence stars and outputs an estimate for tau(c)
- rotation vs convection produces magnetic activity
- this does not apply to pre main sequence stars which are fully convective and do not have a tacholine (solid body rotators)
- Rossby number --> dynamo number D=1/Ro^2 -->growth rate of the magnetic field
- created models for different masses which include age, Prot, tau(c), and rossby number Ro
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