Arp

Arp peculiar galaxies are composed of 338 galaxies, pairs and groups. These galaxies probably collided or mergers and eventually form a bigger one.
Arp 78,   Arp 81,   Arp 86,   Arp 87,   Arp 91,   Arp 93,  Arp 116,   Arp 142,   Arp 143,   Arp 147,   Arp 148,   Arp 157,   Arp 184,   Arp 186,     Arp 194,   Arp 195,   Arp 197,   Arp 204,   Arp 214,   Arp 220,   Arp 224,   Arp 227,   Arp 235,   Arp 240,   Arp 244,   Arp 245,   Arp 248,   Arp 251,   Arp 255,   Arp 256,   Arp 271, Arp 273,   Arp 274,   Arp 278,   Arp 280,   Arp 282,   Arp 283,   Arp 284,   Arp 288,   Arp 293,   Arp 298,   Arp 299,    Arp 302,   Arp 303,   Arp 321,   Arp 322.