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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

On the Erigone family and the z(2) secular resonance

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Author(s):
Carruba, V. [1, 2] ; Aljbaae, S. [2] ; Winter, O. C. [2]
Total Authors: 3
Affiliation:
[1] Southwest Res Inst, Dept Space Studies, Boulder, CO 80302 - USA
[2] Univ Estadual Paulista, UNESP, Grp Dinam Orbital & Planetol, Guaratingueta, SP - Brazil
Total Affiliations: 2
Document type: Journal article
Source: Monthly Notices of the Royal Astronomical Society; v. 455, n. 3, p. 2279-2288, JAN 21 2016.
Web of Science Citations: 4
Abstract

The Erigone family is a C-type group in the inner main belt. Its age has been estimated by several researchers to be less then 300 Myr, so it is a relatively young cluster. Yarko-YORP Monte Carlo methods to study the chronology of the Erigone family confirm results obtained by other groups. The Erigone family, however, is also characterized by its interaction with the z(2) secular resonance. While less than 15 per cent of its members are currently in librating states of this resonance, the number of objects, members of the dynamical group, in resonant states is high enough to allow us to use the study of dynamics inside the z(2) resonance to set constraints on the family age. Like the nu(6) and z(1) secular resonances, the z(2) resonance is characterized by one stable equilibrium point at sigma = 180 degrees in the z(2) resonance plane (sigma, d sigma/dt), where sigma is the resonant angle of the z(2) resonance. Diffusion in this plane occurs on time-scales of similar or equal to 12 Myr, which sets a lower limit on the Erigone family age. Finally, the minimum time needed to reach a steady-state population of z(2) librators is about 90 Myr, which allows us to impose another, independent constraint on the group age. (AU)

FAPESP's process: 14/06762-2 - Secular families
Grantee:Valerio Carruba
Support type: Regular Research Grants
FAPESP's process: 11/08171-3 - Orbital dynamics of minor bodies
Grantee:Othon Cabo Winter
Support type: Research Projects - Thematic Grants
FAPESP's process: 13/15357-1 - Long-term effect of the masses (and their uncertainties) of large asteroids on the orbital evolution of terrestrial planetes and minor bodies
Grantee:Safwan Aljbaae
Support type: Scholarships in Brazil - Post-Doctorate
FAPESP's process: 14/24071-7 - Dynamical evolution of asteroid families
Grantee:Valerio Carruba
Support type: Scholarships abroad - Research