Gravity Modes in ZZ Ceti Stars. I. Quasi‐adiabatic Analysis of Overstability
Gravity Modes in ZZ Ceti Stars. I. Quasi‐adiabatic Analysis of Overstability
We analyze the stability of g-modes in white dwarfs with hydrogen envelopes. All relevant physical processes take place in the outer layer of hydrogen-rich material, which consists of a radiative layer overlaid by a convective envelope. The radiative layer contributes to mode damping, because its opacity decreases upon compression and …