NGC 2237, the Rosette Nebula in Monoceros, is located 5, 000 light-years away. It is 130 light-years across and the central hole is 50 light-years in diameter. The Rosette is a large complex of bright emission nebulosity and dark nebulae that is a star forming region that is more than one degree in apparent diameter. The star cluster in the middle of the Rosette is NGC 2244 with six bright 6th, 7th and 8th magnitude stars that look like a ladder. The cluster can be seen with the unaided eye. In the original NGC descriptions, NGC 2239 referred to the cluster. Brighter parts of the Rosette nebula are labeled NGC 2237, NGC 2238 and NGC 2246, but the entire nebula is usually referred to as NGC 2237. Stars in the cluster inside the Rosette formed out of the dust and gas in the region of the Rosette Molecular Cloud (RMC) three to four million years ago. The stellar winds from these hot young OB stars has cleared out the cavity in the center of the | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Lodriguss, Gerard |
Taille de l’image : | 4716 px × 3144 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |