I spent a good fraction of today discussing what could be done with a large sample of stellar radial velocities, heterogeneously selected (as are the stellar spectroscopic targets of the Sloan Digital Sky Survey) with Willman, Zolotov, and Hans-Walter Rix (MPIA, Heidelberg). There are lots of opportunities to discover Milky Way substructure in this sample.
We have decided, optimistically, that we will be getting redshifts out of PRIMUS with high efficiency as soon as the calibration information—wavelength solutions, throughputs, atmospheric absorptions, and point-spread functions—is all known. We worked on all those things today.
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