Spitzer Follow-up of Extremely Cold Brown Dwarfs Discovered by the Backyard Worlds: Planet 9 Citizen Science Project

  title={Spitzer Follow-up of Extremely Cold Brown Dwarfs Discovered by the Backyard Worlds: Planet 9 Citizen Science Project},
  author={A. Meisner and J. Faherty and J. Kirkpatrick and Adam C Schneider and D. Caselden and J. Gagn'e and M. J. Kuchner and A. J. Burgasser and S. Casewell and J. H. Debes and {\'E}tienne Artigau and D. B. Gagliuffi and S. Logsdon and R. Kiman and K. Allers and Chih-Chun Hsu and J. P. Wisniewski and Michaela B. Allen and Paul Beaulieu and G. Colin and H. A. D. Luca and Sam Goodman and Leopold Gramaize and Leslie K. Hamlet and K. Hinckley and Frank Kiwy and D. W. Martin and William Pendrill and A. Rothermich and Arttu Sainio and J. Schumann and Nikolaj Stevnbak Andersen and C. Tanner and Vinod Thakur and Melina Th'evenot and Jim Walla and Zbigniew Wedracki and C. Aganze and R. Gerasimov and C. Theissen and T. P. Collaboration},
  • A. Meisner, J. Faherty, +38 authors T. P. Collaboration
  • Published 2020
  • Physics
  • We present Spitzer follow-up imaging of 95 candidate extremely cold brown dwarfs discovered by the Backyard Worlds: Planet 9 citizen science project, which uses visually perceived motion in multiepoch WISE images to identify previously unrecognized substellar neighbors to the Sun. We measure Spitzer [3.6]−[4.5] color to phototype our brown dwarf candidates, with an emphasis on pinpointing the coldest and closest Y dwarfs within our sample. The combination of WISE and Spitzer astrometry provides… CONTINUE READING

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