An In-depth Investigation of the Primordial Cluster Pair ASCC 19 and ASCC 21

Qingshun Hu, Yuting Li, Mingfeng Qin +4

Utilizing \texttt{Gaia} data from the literature, we report a new young ($\sim$8.9~Myr) cluster pair, ASCC~19 and ASCC~21, located near the Orion star-forming complex. The clusters…