Dynamical and collisional evolution of trans neptunian Binaries

BRUNINI, A.; ZANARDI, M.

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY

WILEY-BLACKWELL PUBLISHING, INC

Lugar: Londres; Año: 2016 vol. 455 p. 4487 - 4497

0035-8711

We present  numerical simulations of the evolution of synthetic TransNeptunian Binaries (TNBs) under the influence of solar perturbations, tidalfriction, and collisions with the population of Classical  Kuiper Belt Object (KBOs).We show that these effects,acting together, have strongly sculpted the primordial population of TNBs.If the population of Classical KBOs have a power law size distributionas the ones that are inferred from the most recent deep eclipticsurveys (Adams et al. 2014, Fraser at al. 2014), the fraction ofsurviving binaries at present would be of only $sim 70$% of theprimordial population. The orbits of the surviving systemsmatch reasonably well the observed sample.Because of the impulse imparted during the collisional process, only$sim$ 10% of the objects reach total orbital circularization ($e leq 10^{-4}$), and very few contact binaries should exist in the Trans Neptunian region.