Infrared excess
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An infrared excess is a measurement of an astronomical source, typically a star, that has a greater measured infrared flux than expected by assuming the star is a blackbody radiator. Infrared excesses are often the result of circumstellar dust and are common in young stellar objects and evolved stars on the asymptotic giant branch or older.
[edit] References
Evans, Aneurin. The Dusty Universe. Ellis Horwood, 155-165.
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