An Eulerian approach for the computation of oscillation mode visibility.
Abstract
We propose a method to compute the visibility of nonradial oscillation modes for a star observed in the continuum. This method, based on the use of Eulerian coordinates, remains valid whenever the geometrical thickness of the emitting layer cannot be neglected. Some numerical tests are performed for comparison with the previous formulation of Dziembowski (1977), based on the use of Lagrangean coordinates.
- Publication:
-
Astronomy and Astrophysics
- Pub Date:
- July 1994
- Bibcode:
- 1994A&A...287..535G
- Keywords:
-
- Computational Astrophysics;
- Euler Equations Of Motion;
- Hydrodynamics;
- Modes;
- Radiative Transfer;
- Stellar Oscillations;
- Stellar Radiation;
- Visibility;
- Geometry;
- Lagrange Coordinates;
- Numerical Analysis;
- Perturbation;
- Stellar Atmospheres;
- Temperature Effects;
- Thickness;
- Astrophysics;
- HYDRODYNAMICS;
- RADIATIVE TRANSFER;
- SUN: OSCILLATIONS;
- STARS: OSCILLATIONS