Adapting a solid accretion scenario for migrating planets in FARGO3D

Autor(es)

DePaula, L. A. ^[1] ; Michtchenko, T. A. ^[1] ; Sousa-Silva, P. A. ^[2]

Afiliação do(s) autor(es)

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

^[2] Sao Paulo State Univ UNESP, Ave Prof Isette Correa Fontao 505, BR-13876750 Sao Joao Da Boa Vista, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Monthly Notices of the Royal Astronomical Society; v. 490, n. 2, p. 2336-2346, DEC 2019.
• Citações Web of Science: 0

Resumo

In this work, we adapt a module planetary formation within the hydrodynamic code FARGO3D. Planetary formation is modelled by a solid core accretion scenario, with the core growing in oligarchic regime. The initial superficial density of planetesimals is proportional to the initial superficial density of gas in the disc. We include a numerical approach to describe the evolution of the eccentricity and the inclination of planetesimals during the formation. This approach impacts directly on the accretion rate of solids. When the core reaches a critical mass, gas accretion begins, following the original FARGO scheme adapted to the FARGO3D code. To exemplify how the module for planetary formation can be used, we investigate the migration of a plane{[} in a 21), locally isothermal gas disc with a prescribed accretion rate, analysing the time-scale involved in the planetary migration process along with the time-scale for planetary formation. The analysis reveals that the mass of the nucleus must be close to its critical value when crossing the ice line to avoid the planet's fall into the stellar envelope. This will allow enough time for the planet to initiate runaway gas accretion, leading to a rapid mass increase and entering type II planetary 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
• Processo FAPESP: 16/13750-6 - O Brasil no espaço: Astrofísica e Engenharia
• Beneficiário: Eduardo Janot Pacheco
• Linha de fomento: Auxílio à Pesquisa - Temático