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Mode identification from spectroscopy of gravity-mode pulsators

Published online by Cambridge University Press:  18 February 2014

K. R. Pollard ,
E. Brunsden ,
P. L. Cottrell ,
M. Davie ,
A. Greenwood ,
D. J. Wright  and
P. De Cat
K. R. Pollard
Affiliation:
Dept of Physics & Astronomy, University of Canterbury, Christchurch, New Zealand email: karen.pollard@canterbury.ac.nz
E. Brunsden
Affiliation:
Dept of Physics & Astronomy, University of Canterbury, Christchurch, New Zealand email: karen.pollard@canterbury.ac.nz
P. L. Cottrell
Affiliation:
Dept of Physics & Astronomy, University of Canterbury, Christchurch, New Zealand email: karen.pollard@canterbury.ac.nz
M. Davie
Affiliation:
Dept of Physics & Astronomy, University of Canterbury, Christchurch, New Zealand email: karen.pollard@canterbury.ac.nz
A. Greenwood
Affiliation:
Dept of Physics & Astronomy, University of Canterbury, Christchurch, New Zealand email: karen.pollard@canterbury.ac.nz
D. J. Wright
Affiliation:
Department of Astrophysics, University of New South Wales, Sydney, Australia
P. De Cat
Affiliation:
Royal Observatory of Belgium, Ringlaan 3, 1180 Brussel, Belgium
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Abstract

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The gravity modes present in γ Doradus stars probe the deep stellar interiors and are thus of particular interest in asteroseismology. For the MUSICIAN programme at the University of Canterbury, we obtain extensive high-resolution echelle spectra of γ Dor stars from the Mt John University Observatory in New Zealand. We analyze these to obtain the pulsational frequencies and identify these with the multiple pulsational modes excited in the star. A summary of recent results from our spectroscopic mode-identification programme is given.

Keywords

line: profilestechniques: spectroscopicstars: oscillations (including pulsations)
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 9 , Symposium S301: Precision Asteroseismology , August 2013 , pp. 477 - 478
Copyright
Copyright © International Astronomical Union 2014 

References

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