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Title: N-body simulations of terrestrial planet formation under the influence of a hot Jupiter

We investigate the formation of multiple-planet systems in the presence of a hot Jupiter (HJ) using extended N-body simulations that are performed simultaneously with semianalytic calculations. Our primary aims are to describe the planet formation process starting from planetesimals using high-resolution simulations, and to examine the dependences of the architecture of planetary systems on input parameters (e.g., disk mass, disk viscosity). We observe that protoplanets that arise from oligarchic growth and undergo type I migration stop migrating when they join a chain of resonant planets outside the orbit of an HJ. The formation of a resonant chain is almost independent of our model parameters, and is thus a robust process. At the end of our simulations, several terrestrial planets remain at around 0.1 AU. The formed planets are not equal mass; the largest planet constitutes more than 50% of the total mass in the close-in region, which is also less dependent on parameters. In the previous work of this paper, we have found a new physical mechanism of induced migration of the HJ, which is called a crowding-out. If the HJ opens up a wide gap in the disk (e.g., owing to low disk viscosity), crowding-out becomes less efficient andmore » the HJ remains. We also discuss angular momentum transfer between the planets and disk.« less
Authors:
 [1] ; ;  [2]
  1. Observatoire de la Côte d'Azur, Boulevard de l'Observatoire, F-06304 Nice Cedex 4 (France)
  2. Nagoya University, Furo-cho, Chikusa-ku, Nagoya, Aichi 464-8602 (Japan)
Publication Date:
OSTI Identifier:
22356740
Resource Type:
Journal Article
Resource Relation:
Journal Name: Astrophysical Journal; Journal Volume: 787; Journal Issue: 2; Other Information: Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; ANALYTICAL SOLUTION; ANGULAR MOMENTUM TRANSFER; COMPUTERIZED SIMULATION; INTERACTIONS; JUPITER PLANET; MASS; MIGRATION; ORBITS; PROTOPLANETS; RESOLUTION; SATELLITES; VISCOSITY