Journal
ASTRONOMY & ASTROPHYSICS
Volume 414, Issue 2, Pages L17-L20Publisher
EDP SCIENCES S A
DOI: 10.1051/0004-6361:20031740
Keywords
stars : oscillations; stars : interiors; stars : variables : general
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New theoretical instability strips for delta Sct and gamma Dor stars are presented. These results have been obtained taking into account the perturbation of the convective flux following the treatment of Gabriel (1996). For the first time, the red edge of the delta Sct instability strip for non-radial modes is obtained. The influence of this time-dependent convection (TDC) on the driving of the gamma Dor gravity modes is investigated. The results obtained for different values of the mixing-length parameter alpha are compared for the gamma Dor models. A good agreement with observations is found for models with alpha between 1.8 and 2.0.
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