Studying the hybrid pulsator 12 Lacertae: mode identification and complex seismic modelling

TL;DR

This paper identifies pulsation modes and performs complex seismic modeling of 12 Lacertae, considering various stellar physics effects to improve understanding of its internal structure.

Contribution

It provides the first comprehensive mode identification and seismic modeling of 12 Lacertae, incorporating effects like chemical composition, opacities, core overshooting, and non-LTE atmospheres.

Findings

Mode degrees for all observed frequencies identified.

Seismic models fit centroid mode frequencies and nonadiabatic f-parameters.

Effects of stellar physics parameters on pulsation modeling analyzed.

Abstract

We present identification of the mode degree, l, for all observed frequencies of 12 Lac and results of seismic modelling which consists in fitting simultaneously the centroid mode frequencies and the corresponding values of the complex nonadiabatic f-parameter. Effects of chemical composition, opacities, core overshooting and non-LTE atmospheres were taken into account.