Adapting a gas accretion scenario for migrating planets in FARGO3D

Autor(es)

De Paula, L. A. ^[1] ; Michtchenko, T. A. ^[1]

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, Inst Astron Geofis & Ciencia Astmosfer, Rua Matao 1226, BR-05508900 Sao Paulo - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Monthly Notices of the Royal Astronomical Society; v. 483, n. 2, p. 1599-1608, FEB 2019.
• Citações Web of Science: 0

Resumo

FARGO3D has been proposed to investigate numerically the gravitational interaction of a planet with the gas disc, providing original outcomes. However, FARGO3D does not consider the gas accretion of the planet which may affect the planetary migration process. Thus, the aim of this paper is to include a model for the gas accretion in the FARGO3D code. For this task, we choose Russell's scheme, which is an adaptation of Kley's model for the gas accretion on to migrating planets. Initially, we study the influence of the gas accretion on to the planet on type II migration of giant planets. For this purpose, we follow the evolution of planets in a 2D locally isothermal disc with a specific accretion rate and different values of viscosity and planetary mass considering two scenarios. In the first, the gas mass is withdrawn from the disc and is not added to the planet. In the second, the planets migrate, while their masses grow due to the gas accretion. Then, we extend our study to estimate the time needed for a low-mass planet to open a gap in the gas disc and compare its value with the characteristic time of type I migration. (AU)

• Processo FAPESP: 14/00492-3 - Elaboração de um cenário para formação de planetas gigantes
• Beneficiário: Luiz Alberto de Paula
• Linha de fomento: Bolsas no Brasil - Doutorado
• Processo FAPESP: 09/54006-4 - Um cluster de computadores para o Departamento de Astronomia do IAG-USP e para o Núcleo de Astrofísica da UNICSUL
• Beneficiário: Elisabete Maria de Gouveia Dal Pino
• Linha de fomento: Auxílio à Pesquisa - Programa Equipamentos Multiusuários