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| Paper: |
Calibrating White Dwarf Asteroseismic Fitting Techniques |
| Volume: |
509, 20th European Workshop on White Dwarfs (EuroWD16) |
| Page: |
243 |
| Authors: |
Castanheira, B. G.; Romero, A. D.; Bischoff-Kim, A. |
| Abstract: |
The main goal of looking for intrinsic variability in stars is the unique opportunity to study their internal structure. Once we have extracted independent modes from the data, it appears to be a simple matter of comparing the period spectrum with those from theoretical model grids to learn the inner structure of that star.
However, asteroseismology is much more complicated than this simple description. We must account not only for observational uncertainties in period determination, but most importantly for the limitations of the model grids, coming from the uncertainties in the constitutive physics, and of the fitting techniques.
In this work, we will discuss results of numerical experiments where we used different independently calculated model grids (white dwarf cooling models WDEC and fully evolutionary LPCODE-PUL) and fitting techniques to fit synthetic stars. The advantage
of using synthetic stars is that we know the details of their interior structure
so we can assess how well our models and fitting techniques are able to
the recover the interior structure, as well as the stellar parameters. |
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