Stellar evolution in motion: Period spacings in γ Doradus stars

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 ther...

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Bibliographic Details
Published in:EPJ Web of Conferences 2015-01, Vol.101, p.6065-1-06065-2
Main Author: Van Reeth, Timothy
Format: Article
Language:English
Subjects:
Photometry
Spectra
Spectroscopic analysis
Spectroscopy
Stars
Stellar evolution
Stellar oscillations
Stellar structure
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Summary: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.
ISSN:2100-014X
2101-6275
2100-014X
DOI:10.1051/epjconf/201510106065