description Sharpless 2-119 Overview
Sharpless 2-119, also called the Clamshell Nebula, is a large H II emission region in the constellation Cygnus. It has a shell-like or ringlike appearance and is associated with the hot, rapidly rotating O-type star 68 Cygni, whose radiation ionizes surrounding hydrogen gas. The object is studied and photographed as a diffuse nebula and as part of the rich star-forming environment of the Cygnus region.
help Sharpless 2-119 FAQ
What is Sharpless 2-119 also called?
Sharpless 2-119 is also called the Clamshell Nebula. It is a large H II emission region in the constellation Cygnus.
Why is Sharpless 2-119 called an H II region?
An H II region is a cloud of ionized hydrogen gas. In Sharpless 2-119, radiation from hot stars ionizes the surrounding hydrogen and makes the nebula glow.
Which star is associated with the Clamshell Nebula?
The nebula is associated with the hot, rapidly rotating O-type star 68 Cygni. Its radiation helps ionize the surrounding gas.
What does Sharpless 2-119 look like?
It has a shell-like or ringlike appearance, which explains the Clamshell Nebula nickname. The object lies in Cygnus and is studied as an emission nebula rather than as a galaxy.
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