Spectroscopic pulsational frequency and mode determination of the γ Doradus Star HD 189631

Davie, M. W. and Pollard, K. R. and Cottrell, P. L. and Brunsden, E. and Wright, D. J. and De Cat, P. (2014) Spectroscopic pulsational frequency and mode determination of the γ Doradus Star HD 189631. Publications of the Astronomical Society of Australia, 31 (Article e025). pp. 1-7. ISSN 1323-3580

Abstract

We present improvement and confirmation of identified frequencies and pulsation modes for the γ Doradus star HD 189631. This work improves upon previous studies by incorporating a significant number of additional spectra and precise determination of frequencies. Four frequencies were identified for this star: 1.6774 ± 0.0002 d<SUP>-1</SUP>, 1.4174 ± 0.0002 d<SUP>-1</SUP>, 0.0714 ± 0.0002 d<SUP>-1</SUP>, and 1.8228 ± 0.0002 d<SUP>-1</SUP> which were identified with the modes (l,m) = (1, +1), (1, +1), (2, -2), and (1, +1) respectively. These findings are in agreement with the most recent literature. The prevalence of (l,m) = (1, +1) modes in γ Doradus stars is starting to become apparent and we discuss this result.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: Files associated with this item cannot be displayed due to copyright restrictions.
Faculty/School / Institute/Centre: Historic - Faculty of Health, Engineering and Sciences - School of Agricultural, Computational and Environmental Sciences (1 July 2013 - 5 Sept 2019)
Faculty/School / Institute/Centre: Historic - Faculty of Health, Engineering and Sciences - School of Agricultural, Computational and Environmental Sciences (1 July 2013 - 5 Sept 2019)
Date Deposited: 12 Aug 2019 01:12
Last Modified: 12 Aug 2019 03:26
Uncontrolled Keywords: HD 189631, line, profiles, stars oscillations, stars, variables general techniques, spectroscopic
Fields of Research : 05 Environmental Sciences > 0599 Other Environmental Sciences > 059999 Environmental Sciences not elsewhere classified
Identification Number or DOI: 10.1017/pasa.2014.20
URI: http://eprints.usq.edu.au/id/eprint/36374

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