Some thoughts on how to serious is practice about the dynamical modeling
a la Bovy using G and K dwarfs near the galactic mid plane from the SEGUE scans.
1) query all G and K stars with b<30 & spectra in DR10
2) where do we get a/Fe from?
3) get the proper motions both from SDSS and from PS1
4) this is the test-sample on which to compare the two proper motion estimates…
5) do we need to deredden individually?
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