INVESTIGADORES
BRUNINI Adrian
congresos y reuniones científicas
Título:
Impactor Flux on the Pluto-Charon System
Autor/es:
DE ELÍA, GONZALO C.; DI SISTO, ROMINA P.; BRUNINI, ADRIÁN
Lugar:
Rio de Janeiro
Reunión:
Congreso; Icy Bodies of the Solar System, Proceedings of the International Astronomical Union, IAU Symposium, Volume 263; 2010
Institución organizadora:
Observatorio Nacional de Rio
Resumen:
In this work, we study the impactor flux on Pluto and Charon due to the
collisional evolution of Plutinos.To do this, we develop a statistical
code that includes catastrophic collisions and cratering events, and
takes into account the stability and instability zones of the 3:2 mean
motion resonance with Neptune. Our results suggest that if 1 Pluto-sized
object is in this resonance, the flux of D = 2 km Plutinos on Pluto is
~4-24 percent of the flux of D = 2 km Kuiper Belt projectiles on Pluto.
However, with 5 Pluto-sized objects in the resonance, the contribution
of the Plutino population to the impactor flux on Pluto may be
comparable to that of the Kuiper Belt. As for Charon, if 1 Pluto-sized
object is in the 3:2 resonance, the flux of D = 2 km Plutinos is ~10-63
percent of the flux of D = 2 km impactors coming from the Kuiper Belt.
However, with 5 Pluto-sized objects, the Plutino population may be a
primary source of the impactor flux on Charon. We conclude that it is
necessary to specify the Plutino size distribution and the number of
Pluto-sized objects in the 3:2 Neptune resonance in order to determine
if the Plutino population is a primary source of impactors on the
Pluto-Charon system.