Rosette nebula


Rosette nebula

(roh-zet ) (NGC 2237-38-39) A large emission nebula, about 1° in diameter, in the constellation Monoceros. It is an H II region heated and ionized by a centrally situated open cluster of hot young stars (NGC 2244).

Rosette Nebula

[rō′zet ′neb·yə·lə] (astronomy) A nebula classified as NGC 2237; this nebula contains numerous small dense clouds that have been photographed with large telescopes.