Capture of grains into resonances through Poynting-Robertson drag

Details Capture of grains into resonances through Poynting-Robertson drag Capture of grains into resonances through Poynting-Robertson drag

Oct 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993cemda..57..373s&link_type=abstract

Celestial Mechanics and Dynamical Astronomy (ISSN 0923-2958), vol. 57, no. 1-2, p. 373-390

Astronomy and Astrophysics

Astronomy

14

Astronomical Models, Cosmic Dust, Drag, Orbit Perturbation, Orbital Resonances (Celestial Mechanics), Poynting-Robertson Effect, Stellar Envelopes, Stellar Orbits, Circular Orbits, Dynamic Models, Eccentricity, Evolution (Development), Mathematical Models, Solar Orbits

Scientific paper

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.

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