Dissecting a rare galaxy merger (the Hummingbird) with radio and mm-observations

The Bird is a luminous infrared galaxy product of a triple merger. Previous infrared observations have shown that the ongoing star formation in the least massive of the components (the head) outshines that of the mprimary nuclei (the heart and the body). This clashes with the commonly accepted major merger scenario in which the SF is expected to be higher in central compact regions. Here I will present preliminary results from our ALMA 12CO 1-0 and VLA observations toward this spectacular object.