Astronomy and Astrophysics – Astrophysics
Scientific paper
2004-11-08
Astronomy and Astrophysics
Astrophysics
11 pages, 12 figures
Scientific paper
10.1051/0004-6361:20041752
A method for obtaining asteroseismological information of a Gamma Doradus oscillating star showing at least three pulsation frequencies is presented. This method is based on a first-order asymptotic g-mode expression, in agreement with the internal structure of Gamma Doradus stars. The information obtained is twofold: 1) a possible identification of the radial order n and degree l of observed frequencies (assuming that these have the same l), and 2) an estimate of the integral of the buoyancy frequency (Brunt-Vaisala) weighted over the stellar radius along the radiative zone. The accuracy of the method as well as its theoretical consistency are also discussed for a typical Gamma Doradus stellar model. Finally, the frequency ratios method has been tested with observed frequencies of the Gamma Doradus star HD 12901. The number of representative models verifying the complete set of constraints (the location in the HR diagram, the Brunt-Vaisala frequency integral, the observed metallicity and frequencies and a reliable identification of n and l) is drastically reduced to six.
Amado Pedro J.
Garrido Rafa
Martín-Ruíz Susana
Moya Andres
Suarez Juan Carlos
No associations
LandOfFree
Frequency ratio method for seismic modeling of Gamma Doradus stars does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Frequency ratio method for seismic modeling of Gamma Doradus stars, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Frequency ratio method for seismic modeling of Gamma Doradus stars will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-108865