The beta Pectoris protoplanetary system. XII. Planetary perturbations in the disk and star-grazing bodies.
Abstract
The sporadic circumstellar spectroscopic variations detected since 1985 toward Beta Pic have been formerly interpreted as the result of the evaporation of small cometary-like bodies in the vicinity of the star. More recently, a model was proposed where these events could be due to planetary perturbations by an hypothetic planet in the disk. Here, a complete study of perturbations of small bodies by a planet is presented. The first result is that, in order to generate star-grazing orbits by perturbations, the planet's orbit has to be elliptical. The subsequent numerical statistical study shows that the model is fairly well suited to explain the observations.
- Publication:
-
Astronomy and Astrophysics
- Pub Date:
- July 1991
- Bibcode:
- 1991A&A...247..505B
- Keywords:
-
- Orbit Perturbation;
- Planetary Orbits;
- Protoplanets;
- Stellar Envelopes;
- Stellar Models;
- Celestial Mechanics;
- Elliptical Orbits;
- Infrared Astronomy Satellite;
- Secular Variations;
- Astrophysics