2017-09-19

unresolved binaries

Today Axel Widmark (Stockholm) showed up in NYC for two weeks of collaboration. We talked out various projects and tentatively decided to look at the unresolved binary stars in the Gaia data. That is, do some kind of inference about whether stars are single or double, and if double, what their properties might be. This is for stars that appear single to Gaia (but, if truly double, are brighter than they should be). I suggested we start by asking “what stars in the data can be composed of two other stars in the data?” with appropriate marginalization.

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