WISEA J041451.67–585456.7 and WISEA J181006.18–101000.5: The First Extreme T-type Subdwarfs?

  title={WISEA J041451.67–585456.7 and WISEA J181006.18–101000.5: The First Extreme T-type Subdwarfs?},
  author={Adam C. Schneider and Adam J. Burgasser and Roman Gerasimov and Federico Marocco and Jonathan Gagn{\'e} and Samuel J. Goodman and Paul-Andr{\'e} Beaulieu and William Pendrill and Austin Rothermich and Arttu Sainio and Marc J. Kuchner and Dan Caselden and Aaron M. Meisner and Jacqueline K. Faherty and Eric E. Mamajek and Chih-chun Hsu and Jennifer J. Greco and Michael C. Cushing and J. Davy Kirkpatrick and Daniella Bardalez-Gagliuffi and Sarah E. Logsdon and Katelyn Allers and John H. Debes},
  journal={arXiv: Solar and Stellar Astrophysics},
We present the discoveries of WISEA J041451.67-585456.7 and WISEA J181006.18-101000.5, two low-temperature (1200$-$1400 K), high proper motion T-type subdwarfs. Both objects were discovered via their high proper motion ($>$0.5 arcsec yr$^{-1}$); WISEA J181006.18-101000.5 as part of the NEOWISE proper motion survey and WISEA J041451.67-585456.7 as part of the citizen science project Backyard Worlds; Planet 9. We have confirmed both as brown dwarfs with follow-up near-infrared spectroscopy. Their… 

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