Complement to VII/239A

NGC 3690

and IC 694 (which see for more discussion). These are not, as is often supposed, the two components of the peculiar interacting system, Arp 299. Instead, NGC 3690 refers to these two peculiar galaxies, while IC 694 is the small elliptical or lenticular about an arcmin northwest. Lord Rosse clearly resolved the two components in at least one of his observations, and he also noted IC 694 as an "appendage" to the north-west of the pair. Swift later rediscovered the IC object; this led Dreyer to assign it its own number in the first IC.

Note, too, that the numbers NGC 3690 and IC 694 are incorrectly assigned to Arp 296 in the tables in the Arp Atlas. This has further exacerbated the naming problem, as Arp 296 is another interacting pair just a few arcmin following Arp 299.



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