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Spectroscopy of γ Doradus stars

Published online by Cambridge University Press:  18 February 2014

E. Brunsden ,
K. R. Pollard ,
P. L. Cottrell ,
D. J. Wright ,
P. De Cat  and
P. M. Kilmartin
E. Brunsden
Affiliation:
Department of Physics and Astronomy, University of Canterbury, Private Bag 4800, Christchurch, New Zealand email: [email protected]
K. R. Pollard
Affiliation:
Department of Physics and Astronomy, University of Canterbury, Private Bag 4800, Christchurch, New Zealand email: [email protected]
P. L. Cottrell
Affiliation:
Department of Physics and Astronomy, University of Canterbury, Private Bag 4800, Christchurch, New Zealand email: [email protected]
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
P. M. Kilmartin
Affiliation:
Department of Physics and Astronomy, University of Canterbury, Private Bag 4800, Christchurch, New Zealand email: [email protected]
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Abstract

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The musician programme at the University of Canterbury has been successfully identifying pulsation modes in many γ Doradus stars using hundreds of ground-based spectroscopic observations. This paper describes some of the successful mode identifications and emerging patterns of the programme. The hybrid γ Doradus/δ Scuti star HD 49434 remains an enigma, despite the analysis of more than 1700 multi-site high-resolution spectra. A new result for this star is apparently distinct line-profile variations for the γ Doradus and δ Scuti frequencies.

Keywords

line: profilestechniques: spectroscopicstars: individual (HD 135825, HD 12901, γ Doradus, HD 49434)stars: variables: otherstars: oscillations (including pulsations)
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 9 , Symposium S301: Precision Asteroseismology , August 2013 , pp. 113 - 116
Copyright
Copyright © International Astronomical Union 2014 

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