Preliminary Trigonometric Parallaxes of 184 Late-T and Y Dwarfs and an Analysis of the Field Substellar Mass Function into the "Planetary" Mass Regime
We
present preliminary trigonometric parallaxes of 184 late-T and Y dwarfs
using observations from Spitzer (143), USNO (18), NTT (14), and UKIRT
(9). To complete the 20-pc census of $\ge$T6 dwarfs, we combine these
measurements with previously published trigonometric parallaxes for an
additional 44 objects and spectrophotometric distance estimates for
another 7.
https://arxiv.org/abs/1812.01208
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