Stellar evolution in motion: Period spacings in γ Doradus stars
Instituut voor Sterrenkunde (IvS), Celestijnenlaan 200D bus 2401, 3001 Leuven, Belgium
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Published online: 23 September 2015
The years of available space-based photometry have led to the detection the dense oscillation frequency spectra for γ Doradus stars. Theory predicts the presence of non-uniform period spacing series in these frequency spectra, which contain information on the interior stellar structure. We have therefore developed a new method, based on the theoretical expectations and the observational spectroscopic studies, which allows us to detect such spacing patterns. The technique has a high success rate, with detections for ~60 % of the studied targets, though a notable deficiency is the inability to determine values for the degree l and the azimuthal order m.
© Owned by the authors, published by EDP Sciences, 2015
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