Echelle diagrams and period spacings of g modes in γ Doradus stars from four years of Kepler observations
Presentation
Paper/Presentation Title | Echelle diagrams and period spacings of g modes in γ Doradus stars from four years of Kepler observations |
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Presentation Type | Presentation |
Authors | Bedding, Timothy R. (Author), Murphy, Simon J. (Author), Colman, Isabel L. (Author) and Kurtz, Donald W. (Author) |
Editors | Garcia, R. A. and Ballot, J. |
Journal or Proceedings Title | European Physical Journal Web of Conferences |
Journal Citation | 101, pp. 1-4 |
Article Number | 01005 |
Number of Pages | 4 |
Year | 2015 |
Place of Publication | France |
Digital Object Identifier (DOI) | https://doi.org/10.1051/epjconf/201510101005 |
Web Address (URL) of Paper | https://www.epj-conferences.org/articles/epjconf/abs/2015/20/contents/contents.html |
Conference/Event | EPJ Web of Conferences: Space Photometry Revolution – CoRoT Symposium 3 (2015) |
Event Details | EPJ Web of Conferences: Space Photometry Revolution – CoRoT Symposium 3 (2015) Event Date 06 to end of 11 Jul 2014 Event Location Toulouse, France |
Abstract | We use photometry from the Kepler Mission to study oscillations in γ Do radus stars. Some stars show remarkably clear sequences of g modes and we use period echelle diagrams to measure period spacings and identify rotationally split multiplets with = 1 and = 2. We find small deviations from regular period spacings that arise from the gradient in the chemical composition just outside the convective core. We also find stars for which the period spacing shows a strong linear trend as a function of period, consistent with relatively rapid rotation. Overall, the results indicate it will be possible to apply asteroseismology to a range of γ Dor stars. |
Keywords | Astrophysics - Solar and Stellar Astrophysics |
ANZSRC Field of Research 2020 | 510109. Stellar astronomy and planetary systems |
Byline Affiliations | University of Sydney |
University of Central Lancashire, United Kingdom | |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q7371/echelle-diagrams-and-period-spacings-of-g-modes-in-doradus-stars-from-four-years-of-kepler-observations
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