Spectroscopic pulsational frequency and mode determination of the γ Doradus Star HD 189631
Article
Article Title | Spectroscopic pulsational frequency and mode determination of the γ Doradus Star HD 189631 |
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ERA Journal ID | 40237 |
Article Category | Article |
Authors | Davie, M. W. (Author), Pollard, K. R. (Author), Cottrell, P. L. (Author), Brunsden, E. (Author), Wright, D. J. (Author) and De Cat, P. (Author) |
Journal Title | Publications of the Astronomical Society of Australia |
Journal Citation | 31, pp. 1-7 |
Article Number | e025 |
Number of Pages | 7 |
Year | 2014 |
Publisher | Cambridge University Press |
Place of Publication | United Kingdom |
ISSN | 1323-3580 |
1448-6083 | |
Digital Object Identifier (DOI) | https://doi.org/10.1017/pasa.2014.20 |
Web Address (URL) | https://www.cambridge.org/core/journals/publications-of-the-astronomical-society-of-australia/article/spectroscopic-pulsational-frequency-and-mode-determination-of-the-doradus-star-hd-189631/DC622B32AD86DF8BF6AD89F7A8047D45 |
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. |
Keywords | HD 189631, line, profiles, stars oscillations, stars, variables general techniques, spectroscopic |
ANZSRC Field of Research 2020 | 419999. Other environmental sciences not elsewhere classified |
Byline Affiliations | University of New South Wales |
University of Canterbury, New Zealand | |
University of York, United Kingdom | |
Royal Observatory of Belgium | |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q53q9/spectroscopic-pulsational-frequency-and-mode-determination-of-the-doradus-star-hd-189631
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