Interaction

銀河間の物理的距離が近づくと衝突合体が起き、銀河は衝突合体を繰り返し現在観測する形態へと進化していきます。銀河の衝突合体は爆発的な星形成、活動銀河核（AGN）の成長等様々な物理過程を引き起こすとされており、それ故銀河進化を議論する際には重要な過程です。しかし銀河の衝突合体についてはまだ不明な事が多く、定量的な結論を出す事が難しいのが現状です。我々は衝突系銀河を分類する手法、そして分類した銀河の性質を解析する事で銀河の衝突合体が銀河進化においてどのような役割を担っているかの解明を目指しています。

When galaxies come into close contact, they merge and interact, and repeat this process to reach the point we observe them at. Galaxy interactions and mergers are associated with various physical processes pertaining to galaxy evolution, such as enhanced star formation activity and the acceleration of accretion of gas onto supermassive black holes and subsequent lighting of active galactic nuclei (AGN). Despite its importance, there remain many questions to be answered about galaxy interactions and mergers. We attempt to develop a method to accurately classify interacting galaxies, and using the classified sample, we will conduct various studies on the physical properties of interacting galaxies to enhance our understanding of the relative role galaxy interactions plays in galaxy evolution.