Abstract:
Objects in 3:2 mean motion resonance with Neptune are protected from close encounters with Neptune by the resonance. Bodies in orbits with semi-major axis between 39.5 and about 42 AU are not protected by the resonance; indeed due to overlapping secular resonances, the eccentricities of orbits in this region are driven up so that a close encounter with Neptune becomes inevitable. It is thus expected that such orbits are unstable. The list of known Trans-Neptunian objects shows a deficiency in the number of objects in this gap compared to the 43-50 AU region, but the gap is not empty. We numerically integrate models for the initial population in the gap, and also all known objects over the age of the Solar System to determine what fraction can survive. We find that this fraction is significantly less than the ratio of the population in the gap to that in the main belt, suggesting that some mechanism must exist to introduce new members into the gap. By looking at the evolution of the test body orbits, we also determine the manner in which they are lost. Though all have close encounters with Neptune, in most cases this does not lead to ejection from the Solar System, but rather to a reduced perihelion distance causing close encounters with some or all of the other giant planets before being eventually lost from the system, with Saturn appearing to be the cause of the ejection of most of the objects. © Springer Science+Business Media, Inc. 2006.
Registro:
Documento: |
Artículo
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Título: | The dynamics of objects in the inner edgeworth-kuiper belt |
Autor: | Jones, D.C.; Williams, I.P.; Melita, M.D. |
Filiación: | Astronomy Unit, Queen Mary, University of London, Mile End Road, London E1 4NS, United Kingdom IAFE, Universidad De Buenos Aires, Ciudad Universitaria, Buenos Aires, Argentina
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Palabras clave: | Celestial mechanics; Numerical methods: N-body; Trans-Neptunian objects; Neptune; numerical model; resonance; solar system; Neptunia |
Año: | 2005
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Volumen: | 97
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Número: | 3-4
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Página de inicio: | 435
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Página de fin: | 458
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DOI: |
http://dx.doi.org/10.1007/s11038-006-9069-7 |
Título revista: | Earth, Moon and Planets
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Título revista abreviado: | Earth Moon Planets
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ISSN: | 01679295
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Registro: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01679295_v97_n3-4_p435_Jones |
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Citas:
---------- APA ----------
Jones, D.C., Williams, I.P. & Melita, M.D.
(2005)
. The dynamics of objects in the inner edgeworth-kuiper belt. Earth, Moon and Planets, 97(3-4), 435-458.
http://dx.doi.org/10.1007/s11038-006-9069-7---------- CHICAGO ----------
Jones, D.C., Williams, I.P., Melita, M.D.
"The dynamics of objects in the inner edgeworth-kuiper belt"
. Earth, Moon and Planets 97, no. 3-4
(2005) : 435-458.
http://dx.doi.org/10.1007/s11038-006-9069-7---------- MLA ----------
Jones, D.C., Williams, I.P., Melita, M.D.
"The dynamics of objects in the inner edgeworth-kuiper belt"
. Earth, Moon and Planets, vol. 97, no. 3-4, 2005, pp. 435-458.
http://dx.doi.org/10.1007/s11038-006-9069-7---------- VANCOUVER ----------
Jones, D.C., Williams, I.P., Melita, M.D. The dynamics of objects in the inner edgeworth-kuiper belt. Earth Moon Planets. 2005;97(3-4):435-458.
http://dx.doi.org/10.1007/s11038-006-9069-7