2020-11-19

a selection function for Gaia

This morning we had a call to begin the GaiaUnlimited project, which is a multi-institution collaboration to make a useful selection function for the ESA Gaia Catalog and Mission. The idea is: Gaia produces catalogs, but it has no deliverable mask or selection probability, so it is not possible to use the catalogs for certain (maybe most?) statistical purposes without additional information. We are going to try to construct that information for the community. Today we kicked off this project, and discussed the scope. We decided that all observational selections are in, but the three-dimensional dust map in the Milky Way is out!

After the call, Rix (MPIA) and I decided that we have to find some good example projects that make use of the selection function but don't need the dust map, because we want to be customers for the project as well as owners.

By the way, this project was started at a #GaiaSprint!

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