Asteroseismic Results for GD 154}
- Author(s)
- O Hürkal, Gerald Handler, Bruno Steininger
- Abstract
GD 154 is one of the coolest and longest-period pulsating DA white dwarf stars. Thus, we may use its pulsations to understand its interior structure and the red edge of the ZZ Ceti Instability Strip. We have acquired new time-resolved photometry of this star, showing that its pulsational frequencies and amplitudes have changed compared to earlier investigations, including a Whole Earth Telescope campaign. We believe that different radial overtones are now excited and we discuss the asteroseismic implications of our findings.
- Organisation(s)
- Department of Astrophysics
- External organisation(s)
- EGE University
- Pages
- 577
- Publication date
- 2005
- Austrian Fields of Science 2012
- 1030 Physics, Astronomy
- Portal url
- https://ucrisportal.univie.ac.at/en/publications/c01a7732-88c4-4fd3-b009-ed07523c50de