@Article{AljbaaeSoucPradChan:2019:DyStGe,
author = "Aljbaae, S. and Souchay, J. and Prado, Antonio Fernando Bertachini
de Almeida and Chanut, T. G. G.",
affiliation = "{Instituto Nacional de Pesquisas Espaciais (INPE)} and SYRTE,
Observatoire de Paris, PSL Research University, CNRS, Sorbonne
Universit{\'e}s and {Instituto Nacional de Pesquisas Espaciais
(INPE)} and {Instituto Nacional de Pesquisas Espaciais (INPE)}",
title = "A dynamical study of the Gefion asteroid family",
journal = "Astronomy \& Astrophysics",
year = "2019",
volume = "622",
number = "A39",
month = "Jan.",
keywords = "minor planets, asteroids: general, celestial mechanics,
gravitation.",
abstract = "The Gefion asteroid family is a group of S-type asteroids located
between the 8J:-3A and 5J:-2A mean-motion resonances. The 5J:-2A
resonance seems to be responsible for the absence of the right
side of the V-shape of this family. We aim in this work to present
a detailed study on the Gefion family, motivated by the
incompatibility found in previous family age estimations and the
fact that this family could be seen as one of the most probable
sources of L-chondrite meteorites. After eliminating all possible
taxonomical and dynamical interlopers, we use a Monte Carlo method
to analyze the semi-major axis evolution of several fictitious
families under the influence of the Yarkovsky and
Yarkovsky-O'Keefe-Radzievsky-Paddack (YORP) effects. We also
perform simulations using symplectic integrators to account for
the Yarkovsky effect (diurnal and seasonal versions) and the
stochastic YORP effect. We make use of the distribution of the
component of the ejection velocity field (V-W) perpendicular to
the orbital plane and the time dependence of the asymmetry of the
distribution of the target function of a fictitious family
generated with ejection velocity parameter 20(-15)(+55) ms(-1) to
obtain an age estimate of 1030(-67)(+19) Myr. We find that 6.5% of
asteroids from the Gefion family can reach orbits similar to
particles in the current near-Earth objects space; 73% of them are
among the Amors asteroids, and the remaining ones are among the
Apollos. We only found 0.5% from the Gefion family reaching the
Mars-crossing space.",
doi = "10.1051/0004-6361/201834470",
url = "http://dx.doi.org/10.1051/0004-6361/201834470",
issn = "0004-6361 and 1432-0746",
language = "en",
urlaccessdate = "26 abr. 2024"
}