Formation of star clusters in galacitc disks and the origin of the variation of star clusters

2017 Fiscal Year Final Research Report

• Project/Area Number: 26800108
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Astronomy
• Research Institution: The University of Tokyo (2015-2017); National Astronomical Observatory of Japan (2014)
• Principal Investigator: Fujii Michiko 東京大学, 大学院理学系研究科(理学部), 准教授 (90722330)
• Project Period (FY): 2014-04-01 – 2018-03-31
• Keywords: 星団 / N体シミュレーション / 天の川銀河

Outline of Final Research Achievements

Recent observations have found various kinds of star clusters such as massive, dense clusters as young as open clusters and embedded clusters, which are beyond classical classification: open or globular clusters. We study the formation mechanism of these various star clusters. We especially focus on their similarities/differences and the relation to the galactic environment. We performed numerical simulations of star clusters forming in giant molecular clouds (GMC) and found that GMCs typical in the Milky Way (MW) form open clusters, but ones typical in star-forming galaxies form young massive (dense) star clusters. We in addition investigated a galaxy model which is similar to the MW and found parameters in order to reproduce the MW in numerical simulations.

Free Research Field

理論天体物理学