Effect of environment in star formation investigated with adaptive mesh refinement

2016 Fiscal Year Final Research Report

• Project/Area Number: 26400233
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Astronomy
• Research Institution: Hosei University
• Principal Investigator: MATSUMOTO Tomoaki 法政大学, 人間環境学部, 教授 (60308004)
• Co-Investigator(Renkei-kenkyūsha): INUTSUKA Shu-ichiro 名古屋大学, 大学院理学研究科, 教授 (80270453) ; MACHIDA Masahiro 九州大学, 大学院理学研究科, 准教授 (10402786) ; DOBASHI Kazuhito 東京学芸大学, 教育学部, 教授 (20237176)
• Project Period (FY): 2014-04-01 – 2017-03-31
• Keywords: 星形成 / 分子雲 / 分子雲コア / 原始連星 / 原始星 / MHD / 数値シミュレーション / AMR

Outline of Final Research Achievements

We have studied star formation in the several environments, i.e., different levels of turbulence and magnetic fields. We have performed large-scale numerical simulations with adaptive mesh refinement (AMR), which allows us to obtain a local high resolution. Several models were investigated: cloud interaction (cloud-cloud collision), protostar formation starting from a cloud scale, and circumbinary structure.
The results of the numerical simulations were compared with the recent high-resolution observation with ALMA and the 45 m telescope at Nobeyama Radio Observatory. By comparison between the numerical simulations and the observation, we discussed several phenomena in the molecular cloud Cyg OB 7, the high-density molecular cloud core MC27, and protobinary stars L1551 NE.

Free Research Field

宇宙物理学