Preliminary Trigonometric Parallaxes of 184 Late-T and Y Dwarfs and an Analysis of the Field Substellar Mass Function into the "Planetary" Mass Regime

@article{Kirkpatrick2018PreliminaryTP,
  title={Preliminary Trigonometric Parallaxes of 184 Late-T and Y Dwarfs and an Analysis of the Field Substellar Mass Function into the "Planetary" Mass Regime},
  author={J. Kirkpatrick and E. Martin and R. Smart and Alfred J. Cayago and C. Beichman and F. Marocco and C. Gelino and J. Faherty and M. Cushing and A. Schneider and G. Mace and C. Tinney and E. Wright and P. Lowrance and J. Ingalls and F. Vrba and J. Munn and S. Dahm and I. McLean},
  journal={arXiv: Solar and Stellar Astrophysics},
  year={2018}
}
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. For these 235 objects, we estimate temperatures, sift into five 150K-wide $T_{\rm eff}$ bins covering the range 300-1050K, determine… Expand
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