Today was the first meeting of #AstroHackNY, where we discuss data analysis and parallel work up at Columbia on Tuesday mornings. We discussed what we want to get out of the series, and started a discussion of why we do linear fitting the way we do, and what are the underlying assumptions.
Prior to that, I talked with Hans-Walter Rix about interpolation and gridding of spectral models. We disagree a bit on the point of all this, but we are trying to minimize the number of stellar model evaluations we need to do to get precise, many-element abundances with a very expensive physical model of stars. We also discussed the point that we probably have to cancel the Heidelberg #GaiaSprint, because of today's announcement from the Gaia Project.
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