`ulirg` Related Article Results

ARP 220 is one of the objects included in the Atlas of Peculiar Galaxies (1966), compiled by Halton Arp, and is classified under the category of "peculiar galaxies." According to the NASA/IPAC Extragalactic Database, ARP 220 is classified as an Ultra-Luminous Infrared Galaxy (ULIRG) and is believed to have formed from the merger of the galaxies IC 4553 and IC 4554. This galaxy pair is in the late stages of merging and contains a dense star-forming region and a heavily dust-obscured environment.