Frequency and mode identification of gamma Doradus from photometric and spectroscopic observations
Article
Article Title | Frequency and mode identification of gamma Doradus from photometric and spectroscopic observations |
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ERA Journal ID | 1074 |
Article Category | Article |
Authors | Brunsden, E. (Author), Pollard, K. R. (Author), Wright, D. J. (Author), De Cat, P. (Author) and Cottrell, P. L. (Author) |
Journal Title | Monthly Notices of the Royal Astronomical Society |
Journal Citation | 475 (3), pp. 3813-3822 |
Number of Pages | 10 |
Year | 2018 |
Publisher | Oxford University Press |
Place of Publication | United Kingdom |
ISSN | 0035-8711 |
1365-2966 | |
Digital Object Identifier (DOI) | https://doi.org/10.1093/mnras/sty034 |
Web Address (URL) | https://academic.oup.com/mnras/article/475/3/3813/4795324 |
Abstract | The prototype star for the gamma Doradus class of pulsating variables was studied employing photometric and spectroscopic observations to determine the frequencies and modes of pulsation. The four frequencies found are self-consistent between the observation types and almost identical to those found in previous studies (1.3641 d(-1), 1.8783 d(-1), 1.4742 d(-1), and 1.3209 d(-1)). Three of the frequencies are classified as l, m = (1, 1) pulsations and the other is ambiguous between l, m = (2, 0) and (2, -2) modes. Two frequencies are shown to be stable over 20 yr since their first identification. The agreement in ground-based work makes this star an excellent calibrator between high-precision photometry and spectroscopy with the upcoming TESS observations and a potential standard for continued asteroseismic modelling. |
Keywords | line profiles, techniques spectroscopic, stars oscillations, stars variables: general |
ANZSRC Field of Research 2020 | 510109. Stellar astronomy and planetary systems |
Public Notes | This article has been accepted for publication in Monthly Notices of the Royal Astronomical Society ©: 2018 The Authors. Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved. |
Byline Affiliations | University of York, United Kingdom |
University of Canterbury, New Zealand | |
University of New South Wales | |
Royal Observatory of Belgium | |
Monash University | |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q53q7/frequency-and-mode-identification-of-gamma-doradus-from-photometric-and-spectroscopic-observations
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