Astronomy and Astrophysics – Astronomy
Scientific paper
Jul 1991
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991a%26a...247..505b&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 247, no. 2, July 1991, p. 505-515.
Astronomy and Astrophysics
Astronomy
33
Orbit Perturbation, Planetary Orbits, Protoplanets, Stellar Envelopes, Stellar Models, Celestial Mechanics, Elliptical Orbits, Infrared Astronomy Satellite, Secular Variations
Scientific paper
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.
Beust Hervé
Ferlet Roger
Vidal-Madjar Alfred
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