ISSN:
1572-9478
Keywords:
Circumstellar dust grain
;
Poynting-Robertson drag
;
resonance
Source:
Springer Online Journal Archives 1860-2000
Topics:
Physics
Notes:
Abstract We review here some relevant problems connected to the evolution of circumstellar dust grains, subjected to Poynting-Robertson (PR) drag, and perturbed by first-order resonances with a planet on a circular orbit. We show that only outer mean motion resonances are able to counteract the damping effect of PR drag. However, the high orbital eccentricities reached by the particle lead to orbit crossings with the planet. This is a serious difficulty for a permanent trapping to be achieved. In any case, we show that the time spent in the resonance is long enough for statistical effects (accumulation at the resonant radius) to be significant. We underline some difficulties associated with this problem, namely, the non-adiabaticity of motion in the resonance phase space and the existence of close encounters with the planet at high eccentricities.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00692487
Permalink