The Dense Molecular Core of ARP220 Radford, S. J. E. ; Delannoy, J. ; Downes, D. ; Guélin, M. ; Guilloteau, S. ; Greve, A. ; Lucas, R. ; Morris, D. ; Wink, J. Abstract Publication: Dynamics of Galaxies and Their Molecular Cloud Distributions Pub Date: 1991 Bibcode: 1991IAUS..146..303R