CoRoT Symposium 3, Kepler KASC-7 joint meeting
6-11 Jul 2014 Toulouse (France)

Abstracts > Bedding Tim

Monday 7
Session 1 - Probing stellar structure and evolution with asteroseismology
Savita Mathur (Chair)
› 14:20 - 14:40 (20min)
› Espace Vanel
Unlocking the secrets of gamma Doradus and delta Scuti stars using echelle diagrams
Tim Bedding  1, *@  , Simon Murphy  2@  , Dennis Stello  3@  
1 : School of Physics, University of Sydney
2 : Sydney Institute for Astronomy  (SIfA)
University of Sydney, NSW 2006 -  Australia
3 : The University of Sydney  (USYD)
* : Corresponding author

The echelle diagram is a powerful method for visualising oscillation spectra. It can be used to find frequency spacings of p modes, period spacings of g modes, and departures from regularity that arise from glitches in stellar interiors. It has been used with great success in visualising solar-like oscillations, from the main sequences to the red giant branch. Here we apply it to hybrid stars that show both g-mode (gamma Dor) and p-mode (delat Scuti) oscillations. We examine Kepler data and observational models in an effort to identify modes and apply asteroseismic analysis to these fascinating objects.

  • Presentation
  • Video
Online user: 2