description Sharpless 2-263 Overview
Sharpless 2-263 is a diffuse emission nebula included in the Sharpless catalogue, a systematic survey of HII regions in the Milky Way published by astronomer Stewart Sharpless in 1959. The catalogue compiled over 300 ionized hydrogen clouds visible from the northern sky, providing a standardized reference for studying star-forming regions. Emission nebulae consist of gas ionized by ultraviolet radiation from nearby hot stars, causing them to glow visibly. Sh2-263 is associated with the broader complex of nebulosity in the Orion region of the sky.
help Sharpless 2-263 FAQ
What is Sharpless 2-263?
Sharpless 2-263 is a diffuse emission nebula in the Sharpless catalogue. It is an ionized hydrogen region listed in the catalogue of Milky Way H II regions.
Who created the Sharpless catalogue?
Astronomer Stewart Sharpless published the Sharpless catalogue in 1959. The catalogue contains more than 300 ionized hydrogen clouds visible from the northern sky.
What does the Sh2 designation mean?
The Sh2 designation identifies an object in Stewart Sharpless's catalogue of emission nebulae. Sharpless 2-263 is one of the catalogue's diffuse H II regions.
Is Sharpless 2-263 an emission nebula?
Yes, it is classified as a diffuse emission nebula. Its glow comes from ionized hydrogen in a star-forming or radiation-illuminated region.
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