KnowraLuminous infrared galaxyLinked fromLinked fromThe 5 pages that link to Luminous infrared galaxy, each with the reason it gives.All 5Broader topic 2Related 1Narrower topic 2Ultraluminous infrared galaxyNarrower topic: ULIRGs occupy the most luminous end of this broader infrared-galaxy class.Arp 220Narrower topic: This broader class provides the luminosity scale just below Arp 220’s ultraluminous category.