Formation of the Young Massive Cluster R136 triggered by Tidally-driven Colliding HI Flows

Understand

Understanding of massive cluster formation is one of the important issues of astronomy.

• By analyzing the HI data, we have identified that the two HI velocity components (L- and D-components) are colliding toward the HI Ridge, in the southeastern end of the LMC, which hosts the young massive cluster R136 and $\sim$400 O/WR stars (Doran et al.
• 2013) including the progenitor of SN1987A.
• The collision is possibly evidenced by bridge features connecting the two HI components and complementary distributions between them.