@Article{DeiennoIzMoGoNeRa:2018:ExPrCo,
author = "Deienno, Rog{\'e}rio and Izidoro, Andr{\'e} and Morbidelli,
Alessandro and Gomes, Rodney S. and Nesvorny, David and Raymond,
Sean N.",
affiliation = "{Instituto Nacional de Pesquisas Espaciais (INPE)} and
{Universidade Estadual Paulista (UNESP)} and {Universit{\'e}
C{\^o}te d’Azur} and {Observat{\'o}rio Nacional} and {Southwest
Research Institute} and {Universite Bordeaux}",
title = "Excitation of a primordial cold asteroid belt as an outcome of
planetary instability",
journal = "Astrophysical Journal",
year = "2018",
volume = "864",
number = "1",
pages = "e50",
month = "Sept",
keywords = "minor planets, asteroids: general, planets and satellites:
dynamical evolution and stability.",
abstract = "The main asteroid belt (MB) is low in mass but dynamically
excited. Here we propose a new mechanism to excite the MB during
the giant planet (the {"}Nice model{"}) instability, which is
expected to feature repeated close encounters between Jupiter and
one or more ice giants ({"}jumping Jupiter{"} or JJ). We show
that, when Jupiter temporarily reaches a high-enough level of
excitation, both in eccentricity and inclination, it induces
strong forced vectors of eccentricity and inclination across the
MB region. Because during the JJ instability Jupiter's orbit
{"}jumps{"} around, the forced vectors keep changing both in
magnitude and phase throughout the whole MB region. The entire
cold primordial MB is thus excited as a natural outcome of the JJ
instability. The level of such an excitation, however, is
typically larger than the current orbital excitation observed in
the MB. We show that the subsequent evolution of the solar system
is capable of reshaping the resultant overexcited MB to its
present-day orbital state, and that a strong mass depletion
(similar to 90%) is associated with the JJ instability phase and
its subsequent evolution throughout the age of the solar system.",
doi = "10.3847/1538-4357/aad55d",
url = "http://dx.doi.org/10.3847/1538-4357/aad55d",
issn = "0004-637X and 1538-4357",
language = "en",
targetfile = "Deienno_2018_ApJ_864_50.pdf",
urlaccessdate = "27 abr. 2024"
}