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Table 11:

Projected rotational velocity, temperature, surface gravity, mass and age of T dwarfs.
Object Spectral type $v_{\rm rot} \sin i$ $\langle T_{\rm eff}\rangle$ Prev. Ref. $\langle \log g\rangle$ Prev. Ref. M Age
    km s-1 K K   (cm s-2) (cm s-2)   $M_{\rm J}$ Gyr
SDSSp J125453.90-012247.4 T2 34 $\pm$ 7 2007 $\pm$ 662 1200 1 4.3 $\pm$ 1.0 5.0 1 - -
2MASS J05591914-1404488 T4.5 28 $\pm$ 5 1002 $\pm$ 278 1200 1 4.9 $\pm$ 0.8 5.5 1 $30^{\rm +45}_{-23}$ $1.0^{\rm +9}_{-0.9}$
2MASS J15031961+2525196 T5 36 $\pm$ 5 1009 $\pm$ 217 1178 2 4.6 $\pm$ 0.8 $\approx$5.0 5 $18^{\rm +37}_{-13}$ $0.4^{\rm +4.6}_{-0.3}$
SDSS J162414.37+002915.6 T6 42 $\pm$ 5 980 $\pm$ 163 1002 $^{\rm +98}_{86}$ 3 4.8 $\pm$ 0.7 $\approx$5.0 5 $23^{\rm +52}_{-16}$ $0.6^{\rm +9.4}_{-0.5}$
SDSS J134646.45-003150.4 T6.5 16 $\pm$ 5 990 $\pm$ 107 960-1020 4 4.1 $\pm$ 0.4 5.0-5.2 4 $10^{\rm +10}_{-5}$ $0.1^{\rm +0.4}_{-0.08}$
2MASS J15530228+1532369 T7 30 $\pm$ 7 941 $\pm$ 138 893 2 4.6 $\pm$ 0.6 $\approx$5.0 5 $18^{\rm +30}_{-11}$ $0.4^{\rm +3.6}_{-0.3}$
2MASS J12171110-0311131 T7.5 29 $\pm$ 7 922 $\pm$ 103 860-880 4 4.8 $\pm$ 0.7 4.7-4.9 4 $23^{\rm +52}_{-16}$ $0.8^{\rm +9}_{-0.7}$
GL 570D T7.5 32 $\pm$ 8 948 $\pm$ 53 780-820 4 4.5 $\pm$ 0.5 5.1 4 $15^{\rm +15}_{-9}$ $0.3^{\rm +1.7}_{-0.2}$
2MASS J04151954-0935066 T8 36 $\pm$ 7 947 $\pm$ 79 740-760 4 4.3 $\pm$ 0.7 4.9-5.0 4 $10^{\rm +20}_{-6}$ $0.1^{\rm +1.9}_{-0.09}$
1 Cushing et al. (2008). 2 Estimated $T_{\rm eff}$ derived from the $T_{\rm eff}$-spectral type relation in Looper et al. (2008).
3 Vrba et al. (2004). 4 Burgasser et al. (2006a). 5 Knapp et al. (2004).

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