The advent of space-based photometry missions in the early 21st century enabled application to asteroseismic data advanced inference techniques until then restricted field helioseismology. high quality observations, discovery mixed modes evolved solar-like oscillators and need for an improvement determination stellar fundamental parameters such as mass, radius age led development sophisticated ...

We investigate the structure of self-gravitating polytropic stellar systems. We present a method which allows to obtain approximate analytical solutions, ψn+ǫ(x), of the nonlinear Poisson equation with the polytropic index n+ ǫ, given the solution ψn(x) with the polytropic index n, for any positive or negative ǫ such that |ǫ| ≪ 1. Application of this method to the spherically symmetric stellar ...

Context. We present an evolutionary disc model of the edge-on galaxy NGC 5907 based on a continuous star formation history and a continuous dynamical heating of the stellar subpopulations. Aims. This model explains in a natural way the two observational facts falling somewhat apart: 1) the exponential vertical disc structure in the optical and NIR of the non-obscured part of the stellar disc an...

We present grids of stellar models and their associated oscillation frequencies that have been used by the CoRoT Seismology Working Group during the scientific preparation of the CoRoT mission. The stellar models have been calculated with the CESAM stellar internal structure and evolution code while the oscillation frequencies have been obtained from the CESAM models by means of the ADIPLS adia...