Gravitational capture of small bodies by gas drag using hydrodynamics equations

• Grant number: 12/19976-5
• Support Opportunities: Scholarships in Brazil - Scientific Initiation
• Start date: January 01, 2013
• End date: December 31, 2014
• Field of knowledge: Physical Sciences and Mathematics - Astronomy - Solar System Astronomy
• Principal Investigator: Ernesto Vieira Neto
• Grantee: Nicole Pereira de Lima
• Host Institution: Faculdade de Engenharia (FEG). Universidade Estadual Paulista (UNESP). Campus de Guaratinguetá. Guaratinguetá , SP, Brazil
• Associated research grant: 11/08171-3 - Orbital dynamics of minor bodies, AP.TEM

Abstract

The dynamical formation of the giant planets irregular satellites is still an open problem. The most accepted theory says that these satellites were captured by their parent planets, although gravitational capture is temporary phenomena. In this work we will use gas drag to study the effectuation of the temporary capture. Others works already studied the gas drag effect in the dynamical formation of the irregular satellites, but using analytical models based in exponential functions. In this work we will use a gas envelope generated by hydrodynamical integrations. (AU)