Echelle diagrams and period spacings of g modes in γ Doradus stars from four years of Kepler observations

Bedding, Timothy R. and Murphy, Simon J. and Colman, Isabel L. and Kurtz, Donald W. (2015) Echelle diagrams and period spacings of g modes in γ Doradus stars from four years of Kepler observations. In: EPJ Web of Conferences: Space Photometry Revolution – CoRoT Symposium 3 (2015), 6 July - 11 July 2014, Toulouse, France.

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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.

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Item Type: Conference or Workshop Item (Commonwealth Reporting Category E) (Lecture)
Refereed: Yes
Item Status: Live Archive
Faculty/School / Institute/Centre: No Faculty
Faculty/School / Institute/Centre: No Faculty
Date Deposited: 27 Apr 2022 23:29
Last Modified: 27 Apr 2022 23:29
Uncontrolled Keywords: Astrophysics - Solar and Stellar Astrophysics
Fields of Research (2020): 51 PHYSICAL SCIENCES > 5101 Astronomical sciences > 510109 Stellar astronomy and planetary systems
Socio-Economic Objectives (2020): 28 EXPANDING KNOWLEDGE > 2801 Expanding knowledge > 280120 Expanding knowledge in the physical sciences
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