high proper-motion stars

I finally got around to plotting the proper motions of 6000 extremely red stars in the SDSS Southern Stripe today. There are many with very large proper motions, going nearly to arcsec per year levels! If these are not errors (and they easily could be), they are likely to be cool dwarfs, either very nearby or else in the halo. Either way, they are interesting. There are also many with very small proper motions; these are candidates to be high-redshift galaxies and quasars.

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