5 papers
Effect of local treatments of convection upon the solar p-mode excitation rates
R. Samadi, M. -J. Goupil, Y. Lebreton +2
We compute, for several solar models, the rates P at which the solar radial p modes are expected to be excited. The solar models are computed with two different local treatments of…
Interpolation of Stellar Model Grids and Application to the NEMO Grid
J. Nendwich, U. Heiter, F. Kupka +2
NEMO.2003 (vienna NEw MOdel grid of stellar atmospheres) is a DVD with 91,520 stellar model atmospheres representing a 5D grid of modified ATLAS9 atmospheres; the purpose of the mo…
Atmospheric structure and acoustic cut-off frequency of roAp stars
N. Audard, F. Kupka, P. Morel +2
Some of the rapidly oscillating (CP2) stars, have frequencies which are larger than the theoretical acoustic cut-off frequency. As the cut-off frequency depends on the T(tau) relat…
The effects of convection on the colours of A and F stars
B. Smalley, F. Kupka
We present a discussion on the effects of convection on the uvby colours of A and F stars. The mixing-length theory used in ATLAS9 is compared to the turbulent convection theory of…
CP star atmospheres based on individual ODFs
F. Kupka, N. E. Piskunov
We describe a new method for the computation of opacity distribution functions (ODFs) useful to calculate one-dimensional model atmospheres in local thermal equilibrium (LTE). The…