Improved infrared photometry and a preliminary parallax measurement for the extremely cold brown dwarf CWISEP J144606.62$-$231717.8

@article{Marocco2019ImprovedIP,
  title={Improved infrared photometry and a preliminary parallax measurement for the extremely cold brown dwarf CWISEP J144606.62\$-\$231717.8},
  author={F. Marocco and J. Kirkpatrick and A. Meisner and D. Caselden and P. Eisenhardt and M. Cushing and J. Faherty and C. Gelino and Edward L. Wright Jet Propulsion Laboratory and Caltech and Usa and Ipac and Nsf Oir Lab and Gigamon Atr and U. Toledo and American Museum of Natural History and Ucla},
  journal={arXiv: Solar and Stellar Astrophysics},
  year={2019}
}
We present follow-up $Spitzer$ observations at 3.6$\mu$m (ch1) and 4.5$\mu$m (ch2) of CWISEP J144606.62$-$231717.8, one of the coldest known brown dwarfs in the solar neighborhood. This object was found by mining the Wide-field Infrared Survey Explorer ($WISE$) and $NEOWISE$ data via the CatWISE Preliminary Catalog by Meisner et al. (2019b), where an initial $Spitzer$ color of ch1$-$ch2 = 3.71$\pm$0.44 mag was reported, implying it could be one of the reddest, and hence coldest, known brown… Expand

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