کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10701767 | 1021215 | 2007 | 11 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Origin of scattered disk resonant TNOs: Evidence for an ancient excited Kuiper belt of 50 AU radius
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
علوم زمین و سیارات
علوم فضا و نجوم
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![عکس صفحه اول مقاله: Origin of scattered disk resonant TNOs: Evidence for an ancient excited Kuiper belt of 50 AU radius Origin of scattered disk resonant TNOs: Evidence for an ancient excited Kuiper belt of 50 AU radius](/preview/png/10701767.png)
چکیده انگلیسی
Resonance occupation of trans-neptunian objects (TNOs) in the scattered disk (>48AU) was investigated by integrating the orbits of 85 observed members for 4 Gyr. Twenty seven TNOs were locked in the 9:4, 16:7, 7:3, 12:5, 5:2, 8:3, 3:1, 4:1, 11:2, and 27:4 resonances. We then explored mechanisms for the origin of the resonant structure in the scattered disk, in particular the long-term 9:4, 5:2, and 8:3 resonant TNOs (median 4 Gyr), by performing large scale simulations involving Neptune scattering and planetary migration over an initially excited planetesimals disk (wide range of eccentricities and inclinations). To explain the formation of Gyr-resident populations in such distant resonances, our results suggest the existence of a primordial planetesimal disk of at least 45-50 AU radius that suffered a dynamical perturbation leading to 0.1-0.3 or greater eccentricities and a range of inclinations up to â¼20° during early stages of the Solar System history, before planetary migration.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Icarus - Volume 186, Issue 2, February 2007, Pages 331-341
Journal: Icarus - Volume 186, Issue 2, February 2007, Pages 331-341
نویسندگان
Patryk Sofia Lykawka, Tadashi Mukai,