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THE ROSETTE NEBULAThis composite image shows the star formation region within the Rosette Nebula, aka NGC 2237. The nebula is about 5,000 light years from Earth and spans about 100 light-years across; it can be seen through a small telescope towards the constellation of the Unicorn (Monoceros).The white line outlines data from the Chandra X-ray Observatory, which is coloured red. The X-rays show hundreds of young stars within the central cluster and fainter clusters on either side. Optical data from the Digitized Sky Survey and the Kitt Peak National Observatory is coloured in purple, orange, green and blue and shows large areas of gas and dust; this includes giant pillars left over from intense radiation from massive stars. Before this Chandra study, only 36 young stars had been identified in NGC 2237. The number of young stars discovered has now increased to about 160. as there are several X-ray emitting stars around the pillars and an outflow has been detected coming from a dark area of the optical image, star formation is likely to be continuing within NGC 2237.Combining these results with earlier studies indicates that the central cluster formed first and this was followed by expansion of the nebula. This in turn triggered the formation of the two neighboring clusters, including NGC 2237.-TELhttp://www.nasa.gov/multimedia/imagegallery/image_feature_1760.htmlhttp://apod.nasa.gov/apod/ap110214.htmlImage Credit:X-ray: NASA/CXC/SAO/J. Wang et al.Optical: DSS & NOAO/AURA/NSF/KPNO 0.9-m/T. Rector et al. View high resolution

THE ROSETTE NEBULA

This composite image shows the star formation region within the Rosette Nebula, aka NGC 2237. The nebula is about 5,000 light years from Earth and spans about 100 light-years across; it can be seen through a small telescope towards the constellation of the Unicorn (Monoceros).

The white line outlines data from the Chandra X-ray Observatory, which is coloured red. The X-rays show hundreds of young stars within the central cluster and fainter clusters on either side. Optical data from the Digitized Sky Survey and the Kitt Peak National Observatory is coloured in purple, orange, green and blue and shows large areas of gas and dust; this includes giant pillars left over from intense radiation from massive stars. 

Before this Chandra study, only 36 young stars had been identified in NGC 2237. The number of young stars discovered has now increased to about 160. as there are several X-ray emitting stars around the pillars and an outflow has been detected coming from a dark area of the optical image, star formation is likely to be continuing within NGC 2237.

Combining these results with earlier studies indicates that the central cluster formed first and this was followed by expansion of the nebula. This in turn triggered the formation of the two neighboring clusters, including NGC 2237.

-TEL

http://www.nasa.gov/multimedia/imagegallery/image_feature_1760.html
http://apod.nasa.gov/apod/ap110214.html

Image Credit:
X-ray: NASA/CXC/SAO/J. Wang et al.
Optical: DSS & NOAO/AURA/NSF/KPNO 0.9-m/T. Rector et al.

(Source: facebook.com)

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