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Fig. 1

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Top: proper motion in RA vs. proper motion in Dec. Proper motions were obtained from the 2002 and 2009 Ks-band positions. Red square is TMR-1C. Gray squares are faint objects with Ks < 17 mag, that are common in the 2002 and 2009 Ks-band images. The uncertainties are large due to the 0.3″–0.8″ position uncertainty for the 2009 observations. Blue squares denote the median proper motions for the 11 groups in Taurus from Luhman & Mamajek (2010). The errors on proper motions for these groups are between 1 and 2 mas yr-1. The typical proper motion for Taurus from Ducourant et al. (2005) is +2, −22 mas yr-1, with uncertainties of 2–5 mas yr-1. Bottom: the 2002 Ks photometry vs. the total proper motion. The total proper motion for the 11 groups in Taurus from Luhman & Mamajek (2010) is between 16 and 27 mas yr-1. From Ducourant et al. (2005), the typical proper motion in Taurus is 22.1 mas yr-1.

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