2020-03-04

Possible cloud-cloud collision in M17 SWex 

Shinichi Kinoshita (NAOJ) *student talk *given in Japanese

abstract:

 Collisions between giant molecular clouds in galactic discs have been proposed as a mechanism for triggering star formation, potentially even massive stars and massive star clusters. When two clouds collide, a dense layer with properties required for high-mass star formation may rapidly form. This process has been studied in numerical simulations (e.g, Inoue & Fukui 2013, Wu et al. 2017). There are also many observational candidates for triggering of star formation by cloud-cloud collision (e.g, Torii et al. 2011, Fukui et al. 2014). Using wide-field 13CO (J =1-0) data taken with the Nobeyama 45m telescope, we found some cloud structures that may have been colliding in infrared dark cloud region, M17 SWex (Kinoshita et al. submitted to PASJ). In this talk, I will show some observational results which infer the possibility of cloud-cloud collision in M17 SWex and discuss the effect of this collision. At the end of the talk, I will briefly introduce my future works for numerical simulation.

host contact: Akimasa Kataoka