Convection in the envelope of Procyon A

Details Convection in the envelope of Procyon A Convection in the envelope of Procyon A

May 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004aas...204.0706d&link_type=abstract

American Astronomical Society Meeting 204, #07.06; Bulletin of the American Astronomical Society, Vol. 36, p.785

Astronomy and Astrophysics

Astronomy

Scientific paper

Theoretical models are presented for the envelope of Procyon A. Procyon A is known to have a shallow convection zone. We investigate the depth of the convection zone, the efficiency of convection in the convection region, convective velocities and uncertainties in the efficiency of diffusion from the convection zone into the adjacent radiative layers. The effects of turbulent pressure and turbulent kinetic energy are included in the models, based on a parameterization of 3D simulations of radiative hydrodynamics. The conditions for the stochastic excitation of acoustic non-radial oscillations are investigated.
This work is supported in part by grants from NASA (PD, SB, FJR), NSF (SB, LHL) and NSERC (DBG).

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