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Last name: RICKMAN
First name: H.
International audience
International audience
International audience
Celestial Mechanics and Dynamical Astronomy, 102, pp. 111-132, http://dx.doi.org./10.1007/s10569-008-9140-y
► The effects of passing stars on the flux of observable comets is studied. ► Massive stars inject observable comets much more efficiently than light stars do. ► The long term synergy between stars and Galactic tide is explained. ► Stars send comets into orbits from which the tides may make them observable. ► Single massive stars may increase...
Celestial Mechanics and Dynamical Astronomy, 95, pp. 299-326, http://dx.doi.org./10.1007/s10569-006-9027-8
International audience
Earth Moon and Planets, 97, pp. 411-434, http://dx.doi.org./10.1007/s11038-006-9113-7
Long term evolution of an initial set of 10 7 Oort cloud comets is performed for the age of the solar system taking into account the action of passing stars using 10 different sequences of stellar encounters, Galactic tides and the gravity of the giant planets. The initial conditions refer to a disk-shaped Oort cloud precursor, concentrated...
International audience
International audience
Context. This work is a follow-up of a previous study, where we simulated the dynamical evolution of the Oort Cloud over 5 Gyr with special attention to the injection of comets into observable orbits.Aims. We wish to clarify how comet injection operates with two types of perturbers: Galactic tides and passing stars. We illustrate why attempts...
The surface of (21) Lutetia is highly complex with significant interactions between ancient and more recent structures. This work attempts to summarize the surface geomorphology observed using the high resolution images from OSIRIS, the imaging system onboard the European Space Agency's Rosetta spacecraft. A wide range of surface morphologies...