We present a kinematic analysis of 152 low surface gravity M7-L8 dwarfs by adding 18 new parallaxes (including 10 for comparative field objects), 38 new radial velocities, and 19 new proper motions. We also add low- or moderate-resolution near-infrared spectra for 43 sources confirming their low surface gravity features. Among the full sample, we find 39 objects to be high-likelihood or new bona fide members of nearby moving groups, 92 objects to be ambiguous members and 21 objects that are non-members. Using this age-calibrated sample, we investigate trends in gravity classification, photometric color, absolute magnitude, color-magnitude, luminosity, and effective temperature.

Cone search capability for table J/ApJS/225/10/table5 (New proper-motion measurements)

Cone search capability for table J/ApJS/225/10/table6 (Near-infrared spectral data for 43 sources)

Cone search capability for table J/ApJS/225/10/table7 (Radial velocities from high resolution spectroscopy for 50 sources)

Cone search capability for table J/ApJS/225/10/lsgdwarf (Photometric properties, kinematic data and moving group membership probabilities of the 152 low surface gravity dwarfs (tables 1, 10 and 12))

Cone search capability for table J/ApJS/225/10/plxtarg (Parallax target observations and results (tables 2 and 3))