IALP 13078
INSTITUTO DE ASTROFISICA LA PLATA
Unidad Ejecutora - UE
artículos
Título:
Forming Jupiter, Saturn, Uranus and Neptune in few million years by core accretion
Autor/es:
OMAR G. BENVENUTO ANDREA FORTIER ADRIÁN BRUNINI
Revista:
ICARUS
Editorial:
ACADEMIC PRESS INC ELSEVIER SCIENCE
Referencias:
Lugar: New York; Año: 2009 vol. 204 p. 752 - 755
ISSN:
0019-1035
Resumen:
Giant planet formation process is still not completely understood. The current most accepted paradigm,the core instability model, explains several observed properties of the Solar Systems giant planets but, todate, has faced difficulties to account for a formation time shorter than the observational estimates ofprotoplanetary disks lifetimes, especially for the cases of Uranus and Neptune. In the context of thismodel, and considering a recently proposed primordial Solar System orbital structure, we performednumerical calculations of giant planet formation. Our results show that if accreted planetesimals followa size distribution in which most of the mass lies in 30100 m sized bodies, Jupiter, Saturn, Uranus andNeptune may have formed according to the nucleated instability scenario. The formation of each planetoccurs within the time constraints and they end up with core masses in good agreement with presentestimations.
