Is this an Early Stage Merger? A Case Study on Molecular Gas and Star Formation Properties of Arp 240

Hao He, C. D. Wilson, Kazimierz Sliwa +2

We present new high resolution ${}^{12}$CO $J$=1-0, $J$=2-1, and ${}^{13}$CO $J$=1-0 maps of the early stage merger Arp 240 (NGC5257/8) obtained with the Atacama Large Millimeter/submi…