Resonance capture at arbitrary inclination


Autoria(s): Namouni, Fathi; Morais, Maria Helena Moreira
Contribuinte(s)

Universidade Estadual Paulista (UNESP)

Data(s)

21/10/2015

21/10/2015

11/01/2015

Resumo

Resonance capture is studied numerically in the three-body problem for arbitrary inclinations. Massless particles are set to drift from outside the 1: 5 resonance with a Jupiter-mass planet thereby encountering the web of the planet's diverse mean motion resonances. Randomly constructed samples explore parameter space for inclinations from 0 to 180 degrees with 5 degrees increments totalling nearly 6 x 10(5) numerical simulations. 30 resonances internal and external to the planet's location are monitored. We find that retrograde resonances are unexpectedly more efficient at capture than prograde resonances and that resonance order is not necessarily a good indicator of capture efficiency at arbitrary inclination. Capture probability drops significantly at moderate sample eccentricity for initial inclinations in the range [10 degrees,110 degrees]. Orbit inversion is possible for initially circular orbits with inclinations in the range [60 degrees,130 degrees]. Capture in the 1:1 co-orbital resonance occurs with great likelihood at large retrograde inclinations. The planet's orbital eccentricity, if larger than 0.1, reduces the capture probabilities through the action of the eccentric Kozai-Lidov mechanism. A capture asymmetry appears between inner and outer resonances as prograde orbits are preferentially trapped in inner resonances. The relative capture efficiency of retrograde resonance suggests that the dynamical lifetimes of Damocloids and Centaurs on retrograde orbits must be significantly larger than those on prograde orbits implying that the recently identified asteroids in retrograde resonance, 2006 BZ8, 2008 SO218, 2009 QY6 and 1999 LE31 may be among the oldest small bodies that wander between the outer giant planets.

Formato

1998-2009

Identificador

http://mnras.oxfordjournals.org/content/446/2/1998

Monthly Notices Of The Royal Astronomical Society, v. 446, n. 2, p. 1998-2009, 2015.

0035-8711

http://hdl.handle.net/11449/129062

http://dx.doi.org/10.1093/mnras/stu2199

WOS:000350272200071

Idioma(s)

eng

Publicador

Oxford Univ Press

Relação

Monthly Notices Of The Royal Astronomical Society

Direitos

closedAccess

Palavras-Chave #Celestial mechanics #Comets: general #Kuiper belt: general #Minor planets, asteroids: general #Oort Cloud
Tipo

info:eu-repo/semantics/article