Infrared excess

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Science and technology

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What Wikipedia says

An infrared excess (also known as an IR excess, or IRX) is a measurement of an astronomical source, typically a star, which has a greater than expected infrared flux in the spectral energy distribution assuming that the source is a blackbody radiator.

Excerpt from the Wikipedia article “Infrared excess”, under the CC BY-SA 4.0 license. Read the article on Wikipedia

Image: NASA/JPL-Caltech/M. Kuchner (GSFC), Public domain, via Wikimedia Commons.