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Identification of pulsation modes from spectroscopy

Published online by Cambridge University Press:  18 February 2014

Katrien Uytterhoeven
Katrien Uytterhoeven*
Affiliation:
Instituto de Astrofísica de Canarias, 38205 La Laguna, Tenerife, Spain email: katrien@iac.es Departamento de Astrofísica, Universidad de La Laguna, 38200 La Laguna, Tenerife, Spain
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Abstract

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Time-series of high-resolution spectra of massive main-sequence pulsators contain information on the degree l and azimuthal number m of a pulsation mode. I present an overview of existing mode-identification techniques that have been developed to derive l and m from spectroscopic data. I also discuss the data quality needed to perform such a study. Through some examples from the literature I show that the optimal way to identify modes in heat-driven non-radial pulsators is by 1) using multi-site campaign data, 2) combining different spectroscopic mode-identification techniques, and 3) combining results from photometric and spectroscopic mode-identification studies.

Keywords

stars: oscillationsmethods: data analysistechniques: spectroscopicline: profilesstars: variables: δ Scutistars: variables: other
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 9 , Symposium S301: Precision Asteroseismology , August 2013 , pp. 101 - 107
Copyright
Copyright © International Astronomical Union 2014 

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