Infrared excess

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An infrared excess is a measurement of an astronomical source, typically a star, that in their spectral energy distribution 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.

References[edit]

Evans, Aneurin (1993). The Dusty Universe. Ellis Horwood. pp. 155–165.