摘要: The final "giant-impact" phase of terrestrial planet formation is believed to begin with a large number planetary "embryos" on nearly circular, coplanar orbits. Mutual gravitational interactions gradually excite their eccentricities until orbits cross and they collide merge; through this process the surviving bodies declines system contains small planets well-separated, stable In paper we explore simple statistical model for orbit distribution formed by process, based sheared-sheet approximation ansatz that uniformly all region space. provides analytic predictions semimajor axis differences, correlations between orbital elements nearby planets, complete N-planet function, in terms single parameter, "dynamical temperature", determined masses. predicted properties are generally consistent N-body simulations giant-impact differences Kepler catalog extrasolar planets. A similar may apply giant if these mainly dynamical evolution after have gas disk has disappeared.
arxiv.org
sci-hub.se 参考文章(71)
J.-M. Petit, M. Henon, Satellite encounters. [In circular orbits] Icarus; (United States). ,vol. 66, ,(1986) , 10.1016/0019-1035(86)90089-8
Matthew J. Holman, A possible long-lived belt of objects between Uranus and Neptune Nature. ,vol. 387, pp. 785- 788 ,(1997) , 10.1038/42890
James Binney, Scott Tremaine, Galactic Dynamics: Second Edition Galactic Dynamics: Second Edition. ,(2008) , 10.1515/9781400828722
Hilke E. Schlichting, Formation of close in Super-Earths \& Mini-Neptunes: Required Disk Masses \& Their Implications arXiv: Earth and Planetary Astrophysics. ,(2014) , 10.1088/2041-8205/795/1/L15
Jack J. Lissauer, Rebekah I. Dawson, Scott Tremaine, Advances in exoplanet science from Kepler Nature. ,vol. 513, pp. 336- 344 ,(2014) , 10.1038/NATURE13781
J.E. Chambers, G.W. Wetherill, A.P. Boss, The Stability of Multi-Planet Systems Icarus. ,vol. 119, pp. 261- 268 ,(1996) , 10.1006/ICAR.1996.0019
Eunkyu Han, Sharon X. Wang, Jason T. Wright, Y. Katherina Feng, Ming Zhao, Onsi Fakhouri, Jacob I. Brown, Colin Hancock, Exoplanet Orbit Database. II. Updates to Exoplanets.org Publications of the Astronomical Society of the Pacific. ,vol. 126, pp. 827- 837 ,(2014) , 10.1086/678447
Douglas N. C. Lin, Douglas N. C. Lin, Yi-Sui Sun, Ji-Lin Zhou, Post-Oligarchic Evolution of Protoplanetary Embryos and the Stability of Planetary Systems The Astrophysical Journal. ,vol. 666, pp. 423- 435 ,(2007) , 10.1086/519918
Eiichiro Kokubo, Junko Kominami, Shigeru Ida, FORMATION OF TERRESTRIAL PLANETS FROM PROTOPLANETS. I. STATISTICS OF BASIC DYNAMICAL PROPERTIES The Astrophysical Journal. ,vol. 642, pp. 1131- 1139 ,(2006) , 10.1086/501448
M. J. Holman, J. Wisdom, Dynamical Stability in the Outer Solar System and the Delivery of Short Period Comets The Astronomical Journal. ,vol. 105, pp. 1987- 1999 ,(1993) , 10.1086/116574