On the Dynamical Evolution of Scattered Disk Objects Outside the Planetary System

• Autorzy: Gabryszewski R. , Rickman H.
• Języki publikacji: EN

Abstrakty

EN

We report the results of dynamical simulations, covering Gyr timescales, of fictitious Scattered Disk Objects as a follow-up to an earlier study. Our dynamical model is similar in that it does not include external agents like passing stars or the Galactic tide. Only the four giant planets are explicitly treated as perturbers. We analyze the random-walk behavior of the inverse semi-major axis by means of a simplified circular restricted 3-body problem as an approximate analogue. Our results concerning the role of resonant effects and the transfer efficiency into the orbital energy domain of the inner Oort Cloud are in broad agreement with the earlier papers, and we confirm the important role of external objects (with perihelia beyond Neptune's orbit) in feeding the Oort Cloud. We estimate the efficiency of this transfer to be even somewhat higher than previously found.

Słowa kluczowe

EN

Kuiper-Belt: general; Oort Cloud; Celestial mechanics; methods: numerical

• Wydawca: Copernicus Foundation for Polish Astronomy
• Czasopismo: Acta Astronomica
• Rocznik: 2010
• Tom: Vol. 60, No. 4
• Strony: 373--385
• Opis fizyczny: Bibliogr. 12 poz., wykr.

Twórcy

autor

Gabryszewski R.

• Space Research Centre Polish Academy of Sciences, ul. Bartycka 18A, 00-716 Warszawa, Poland

autor

Rickman H.

• Space Research Centre Polish Academy of Sciences, ul. Bartycka 18A, 00-716 Warszawa, Poland
• Department of Physics and Astronomy, Uppsala University, Box 515, Regementsvägen 1, SE-75120 Uppsala, Sweden

Bibliografia

• Chambers, J.E. 1999, MNRAS, 304, 793.
• Duncan, M.J., Quinn, T., and Tremaine, S. 1987, AJ, 94, 1330.
• Duncan, M.J., and Levison, H.F. 1997, Science, 276, 1670.
• Fernández, J.A., Gallardo, T., and Brunini, A. 2004, Icarus, 172, 372.
• Gallardo, T. 2006, Icarus, 181, 205.
• Gomes, R.S., Gallardo, T., Fernández, J.A., and Brunini, A. 2005, Celestial Mechanics and Dynamical Astronomy, 91, 109.
• Leto, G., Jakubik, M., Paulech, T., Neslušan, L., and Dybczynski, P. A. 2009, Earth, Moon and Planets, 105, 263.
• Luu, J., Marsden, B.G., Jewitt, D., Trujillo, C.A., Hergenrother, C.W., Chen, J., and Offutt, W.B. 1997, Nature, 387, 573.
• Morbidelli, A., and Brown, M.E. 2004, in: “Comets II”, M.C. Festou, H.U. Keller and H. A. Weaver, Eds., p. 175.
• Rickman, H., Froeschlé, Ch., Froeschlé, Cl., and Valsecchi, G.B. 2004, A&A, 428, 673.
• Rickman, H. 2010, in: “Dynamics of Small Solar System Bodies and Exoplanets” by J. Souchay and R. Dvorak, Eds., Lecture Notes in Physics, 790, 341.
• Sitarski, G. 2002, Acta Astron., 52, 471.