A Stellar Model-fitting Pipeline for Asteroseismic Data from the Kepler Mission

Metcalfe, T. S.; Creevey, O. L.; Christensen-Dalsgaard, J.
Bibliographical reference

The Astrophysical Journal, Volume 699, Issue 1, pp. 373-382 (2009).

Advertised on:
7
2009
Number of authors
3
IAC number of authors
1
Citations
93
Refereed citations
82
Description
Over the past two decades, helioseismology has revolutionized our understanding of the interior structure and dynamics of the Sun. Asteroseismology will soon place this knowledge into a broader context by providing structural data for hundreds of Sun-like stars. Solar-like oscillations have already been detected from the ground in several stars, and NASA's Kepler mission is poised to unleash a flood of stellar pulsation data. Deriving reliable asteroseismic information from these observations demands a significant improvement in our analysis methods. In this paper, we report the initial results of our efforts to develop an objective stellar model-fitting pipeline for asteroseismic data. The cornerstone of our automated approach is an optimization method using a parallel genetic algorithm. We describe the details of the pipeline and we present the initial application to Sun-as-a-star data, yielding an optimal model that accurately reproduces the known solar properties.
Related projects
Helio and Asteroseismology
Helio and Astero-Seismology and Exoplanets Search

The principal objectives of this project are: 1) to study the structure and dynamics of the solar interior, 2) to extend this study to other stars, 3) to search for extrasolar planets using photometric methods (primarily by transits of their host stars) and their characterization (using radial velocity information) and 4) the study of the planetary

Savita
Mathur