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Ney-Allen Nebula


Ney-Allen Nebula
12.9μ mosaic of the Ney-Allen Nebula. The white bar corresponds to 10". Image: 3.6-m ESO telescope on La Silla
An extended infrared source in the Trapezium region of the Orion Complex that shows a strong 10-micron emission feature assumed to result from circumstellar shells of silicate dust. Most of the emission is from dust grains at 250–300 K (about room temperature), in the form of both diffuse clouds and concentrated clumps. Many of the clumps correspond to the proto-planetary disk sources that have been imaged by the Hubble Space Telescope. The dust grains are heated partly by the nearby star Theta-1 Orionis C.


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