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Table 1

Observed sample.

Target Obs. date J H K M   (M⊙) Ref.
RM 231 2008 Dec. 18 11.12 10.56 10.25 0.306–0.321 2
RM 346a 2008 Dec. 20 11.18 10.55 10.28 0.308–0.317 2
RM 132 2008 Dec. 18 11.16 10.57 10.28 0.305–0.317 2
RM 221a 2008 Oct. 20 11.19 10.59 10.32 0.302–0.310 2
RM 49a 2008 Dec. 20 11.21 10.59 10.33 0.302–0.309 2
RM 182 2008 Dec. 20 11.24 10.63 10.36 0.296–0.304 2
RM 60 2008 Dec. 20 11.34 10.76 10.47 0.277–0.287 2
RM 376 2008 Dec. 20. 11.38 10.79 10.53 0.273–0.280 2
RM 126b 2008 Oct. 20 12.06 11.47 11.16 0.192–0.200 2
CFHT 13 2009 Dec. 8 12.45 11.87 11.51 0.160–0.170 1
RM 165c 2009 Dec. 7 13.49 12.86 12.51 0.107–0.111 2
CFHT 19 2008 Oct. 20 14.16 13.43 12.90 0.085–0.099 1
UKIDSS 1 2008 Oct. 20 14.60 13.85 13.42 0.075–0.084 3
UKIDSS 8 2009 Dec. 7 15.60 14.55 14.02 0.060–0.070 3
UKIDSS 5 2009 Dec. 7 15.81 14.72 14.05 0.057–0.069 3
UKIDSS 3c 2009 Dec. 7 15.75 14.78 14.17 0.058–0.066 3
UKIDSS 4 2008 Oct. 20 15.60 14.97 14.23 0.059–0.065 3
UKIDSS 6 2009 Dec. 7 15.50 14.81 14.25 0.061–0.064 3
UKIDSS 2 2009 Dec. 8 15.94 14.81 14.26 0.056–0.064 3
UKIDSS 11 2008 Oct. 20 16.11 15.05 14.28 0.054–0.063 3
UKIDSS 7 2008 Oct. 20 15.99 15.03 14.36 0.055–0.061 3
UKIDSS 9 2008 Oct. 20 16.68 15.29 14.52 0.045–0.058 3
UKIDSS 12 2008 Oct. 20 16.73 15.77 14.80 0.044–0.054 3
UKIDSS 10 2009 Dec. 7 16.54 15.43 14.84 0.049–0.053 3
CFHT 20 2008 Oct. 20 17.02 16.51 16.08 0.037–0.039 1
CFHT 21 2008 Oct. 20 18.48 17.36 16.59 0.020–0.035 1

Notes.The horizontal line demarcates low-mass from very low-mass targets. Masses are estimated (using integrated system magnitudes for binary systems) comparing the near-infrared magnitude to BT-Settl models at an age of 600 Myr. Boldfaced entries indicate the masses derived from the K band photometry.

(a)

Known binary (Reid & Gizis 1997).

(b)

Suspected binary (Reid & Gizis 1997).

(c)

These objects were re-observed on 2010 Dec. 09.

Reference. 1) Bouvier et al. (2008); 2) Reid (1993); 3) Hogan et al. (2008).

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