My day started with a call with Gaby Contardo (SISSA) and Trevor David (Flatiron) about Contardo's project to find stars in ESA Gaia and NASA WISE that have infrared excesses. These stars should be young or dust-enveloped or host aliens! We are trying to phrase this problem as a prediction problem: How well can we predict infrared brightness from Gaia (visible) information, and are there stars with significant excess infrared? The answer seems to be yes: The histogram of differences between predicted and observed skews nicely to infrared-excess. Now: Are any of these known objects? And can we rediscover (say) star-forming regions?
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