A new theory of planetary formation: diversity of planeteary system through snow-line planetary formation

2016 Fiscal Year Final Research Report

• Project/Area Number: 25400447
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Solid earth and planetary physics
• Research Institution: Nagoya University
• Principal Investigator: Sirono Sin-iti 名古屋大学, 環境学研究科, 准教授 (20332702)
• Project Period (FY): 2013-04-01 – 2017-03-31
• Keywords: 木星型惑星 / 原始惑星系円盤 / 原始惑星

Outline of Final Research Achievements

I investigated the timescale of Jupiter formation in the case that protoplanets are formed in a particular zone in a protoplanetary nebula. It was found that the timescale is shorter than the standard scenario in which protoplanets are formed uniformed in the nebula. The gas-rich nature of Jupiter can be explained because the timescale is comparable to the lifetime of a protoplanetary nebula. In addition, I found that the formation location is different from that shown in a previous study. I investigated parameter dependence of mass of the Jupiter's core. I found that the peak of the gas surface density distribution should exceed a critical value, otherwise a Jupiter's core cannot be formed.

Free Research Field

惑星科学