SIMBAD references

2017ApJ...849...38L - Astrophys. J., 849, 38-38 (2017/November-8)

Convection and overshoot in models of γ Doradus and δ Scuti stars.

LOVEKIN C.C. and GUZIK J.A.

Abstract (from CDS):

We investigate the pulsation properties of stellar models that are representative of δ Scuti and γ Doradus variables. We have calculated a grid of stellar models from 1.2 to 2.2 M, including the effects of both rotation and convective overshoot using MESA, and we investigate the pulsation properties of these models using GYRE. We discuss the observable patterns in the frequency spacing for p modes and the period spacings for g modes. Using the observable patterns in the g mode period spacings, it may be possible to observationally constrain the convective overshoot and rotation of a model. We also calculate the pulsation constant (Q) for all models in our grid and investigate the variation with convective overshoot and rotation. The variation in the Q values of the radial modes can be used to place constraints on the convective overshoot and rotation of stars in this region. As a test case, we apply this method to a sample of 22 High-Amplitude δ Scuti stars (HADS) and provide estimates for the convective overshoot of the sample.

Abstract Copyright: © 2017. The American Astronomical Society. All rights reserved.

Journal keyword(s): stars: rotation - stars: variables: delta Scuti - stars: variables: general - stars: variables: general

Simbad objects: 22

goto Full paper

goto View the references in ADS

To bookmark this query, right click on this link: simbad:2017ApJ...849...38L and select 'bookmark this link' or equivalent in the popup menu