Object name: ARP274
Arp 274/NGC 5679 consists of three galaxies in the constellation of Virgo. Arp put them in his category of "double galaxies with connected arms." His note reads: "Perturbation of arm by small galaxy to east." He is drawing several conclusions here that may not be correct. The first is the connected arms classification. NED has this to say about the two main spirals: "Delta V > 1000 km/sec; probably an optical pair." That is they consider the two galaxies redshifts to be too different for them to be anything more than an optical pair. I'm not sure that alone is sufficient but I also see no evidence of interaction between these two. Putting the two together I have to agree they are most likely an optical pair. Note too, in the annotated image there are several galaxies with redshifts that match the center galaxy and several that match the western member. It appears we really do have two different galaxy families in the image, the largest of each family nearly along the same line of sight as seen from earth.