Dynamical dispersal of primordial asteroid families
| Autor: | M. Huaman, Fernando Roig, David Nesvorný, P. I. O. Brasil, Safwan Aljbaae, Valerio Carruba |
|---|---|
| Přispěvatelé: | Fundação Oswaldo Cruz (FIOCRUZ), Réseau International des Instituts Pasteur (RIIP), Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Joseph Louis LAGRANGE (LAGRANGE), Université Côte d'Azur (UCA)-Université Nice Sophia Antipolis (... - 2019) (UNS), COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Observatoire de la Côte d'Azur, Université Côte d'Azur (UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), FEG/UNESP, Instituto Nacional de Pesquisas Espaciais (INPE), Ministério da Ciência, Tecnologia e Inovação, Fundação Oswaldo Cruz / Oswaldo Cruz Foundation (FIOCRUZ), Université Nice Sophia Antipolis (1965 - 2019) (UNS), COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de la Côte d'Azur, COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Université Côte d'Azur (UCA)-Université Côte d'Azur (UCA)-Centre National de la Recherche Scientifique (CNRS) |
| Jazyk: | angličtina |
| Rok vydání: | 2016 |
| Předmět: |
Physics
migration Resonances 010504 meteorology & atmospheric sciences dynamics Planets Uranus Giant planet Astronomy orbital Astronomy and Astrophysics 01 natural sciences Asteroids Astrobiology Jupiter Jumping-Jupiter scenario Space and Planetary Science Neptune Planet Asteroid 0103 physical sciences Physics::Space Physics Asteroid belt Astrophysics::Earth and Planetary Astrophysics [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph] 010303 astronomy & astrophysics 0105 earth and related environmental sciences |
| Zdroj: | Icarus Icarus, Elsevier, 2016, ⟨10.1016/j.icarus.2015.11.015⟩ Icarus, 2016, ⟨10.1016/j.icarus.2015.11.015⟩ |
| ISSN: | 0019-1035 1090-2643 |
| DOI: | 10.1016/j.icarus.2015.11.015⟩ |
| Popis: | International audience; Many asteroid families are identified and well characterized all over the main asteroid belt. Interestingly, however, none of them are older than 4 Gyr. Many mechanisms have been proposed to disperse such old primordial asteroid families that presumably have existed, but only very few have really worked. Here we present a plausible mechanism for dispersing primordial asteroid families that is based on the 5-planet instability model known as jumping Jupiter. Using two different evolutions for the jumping-Jupiter model, we have numerically integrated orbits of eight putative primordial families. Our results show that the most important effect on the asteroid families' eccentricity and inclination dispersal is that of the secular resonances, in some cases associated with the mean motion resonances. As for the semimajor axes spreading we find that the principal effect is that of close encounters with the fifth giant planet whose orbit briefly overlaps with (part of) the main belt. Therefore, the existence of a fifth giant planet with the mass comparable with that of Uranus' or Neptune's could contribute in important ways to dispersal of the primordial asteroid families. To have that effect, the interloper planet should go into and considerably interact with the asteroids during the instability phase. |
| Databáze: | OpenAIRE |
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