State-of-the-art analysis tools for mode identifcation from pattern recognition in space photometry and in spectroscopic line-profile variability of heat-driven pulsators

SCIENTIFIC RATIONALE

Single or binary heat-driven pulsators are excellent astrophysics laboratories to test stellar evolution theory of massive stars with a convective core by means of asteroseismology. Modelling the stellar oscillations from modern high-precision data allows us to place tight constraints on yet poorly known phenomena in stellar interiors, such as convective overshooting, chemical mixing, angular momentum transport, etc. Prerequisites for successful asteroseismic modelling are the derivation of the oscillation frequencies and the identification of the quantum numbers (n,l,m) that describe the eigenfunctions of the detected modes, where n is the radial order, l the degree, and m the azimuthal order.

WORKSHOP GOALS

This SpaceInn workshop will provide practical tutorials on the identifcation of heat-driven oscillation modes in core-hydrogen burning stars with a convective core, based on high-precision Kepler space photometry and high-resolution time-series spectroscopy. Introductory lectures in the morning will be followed by hands-on sessions in the afternoon.

Participants will be asked to briefly present their results during the afternoon of the third workshop day in order to hold intensive discussions on the interpretation.

LAPTOP & DATA

Participants should bring their own laptop as well as data to analyse, with the goal to make good progress in the analyses and interpretation during the workshop, with swift publication soon thereafter. Participants that have no data sets at hand will be provided with unpublished stars observed by Kepler to work with. For reasons of efficiency and optimal target selection, they are encouraged to request data in the comment box of the registration tool.

PROGRAMME

1st day’s topic: Theory of Mode Identification of Nonradial Pulsators

2nd day’s topic: Pattern Recognition in Kepler Photometry & Comparison with Model Predictions

3rd day’s topic: Spectroscopic Mode Identification with the FAMIAS Software Package