Formation of disk galaxies

2017 Fiscal Year Final Research Report

• Project/Area Number: 26800099
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Astronomy
• Research Institution: National Astronomical Observatory of Japan (2017); Ehime University (2016); Tokyo Institute of Technology (2014-2015)
• Principal Investigator: Baba Junichi 国立天文台, JASMINE検討室, 特任研究員 (90569914)
• Project Period (FY): 2014-04-01 – 2018-03-31
• Keywords: 天の川銀河 / 銀河シミュレーション / 星間化学 / 星形成銀河 / 電波観測

Outline of Final Research Achievements

Our habitat, the Milky Way galaxy, is one of spiral galaxies in the Universe. In this project, in order to reveal the formation and evolution of the spiral galaxies via comparisons with latest observations, in particular, dynamical evolution and the ISM properties, we developed the N-body/hydrodynamic simulation code including the detailed ISM processes. As a result, we proposed the new diagnostics of spiral theories between the classical and our new models based on simulation results. Furthermore, we achieved the 100 million-scale simulation of the Milky Way-like barred spiral galaxy. This simulation result was visualized as a 3D movie and opened to the public from NAOJ/4D2U. This movie won the Grand Prix promoted by the Advanced Imaging Society.

Free Research Field

銀河物理学