Corpus ID: 236976119

Ross 19B: An Extremely Cold Companion Discovered via the Backyard Worlds: Planet 9 Citizen Science Project

@inproceedings{Schneider2021Ross1A,
  title={Ross 19B: An Extremely Cold Companion Discovered via the Backyard Worlds: Planet 9 Citizen Science Project},
  author={Adam C. Schneider and Aaron M. Meisner and Jonathan Gagn{\'e} and Jacqueline K. Faherty and Federico Marocco and Adam J. Burgasser and J. Davy Kirkpatrick and Marc J. Kuchner and L{\'e}opold Gramaize and Austin Rothermich and Hunter Brooks and Frederick John Vrba and Daniella C. Bardalez Gagliuffi and Dan Caselden and Michael C. Cushing and Christopher Ryan Gelino and Michael R. Line and Sarah L. Casewell and John H. Debes and Christian Aganze and Andrew Ayala and Roman Gerasimov and Eileen C. Gonzales and Chih-chun Hsu and Rocio Kiman and Mark Popinchalk and Christopher A. Theissen and The Planet Collaboration},
  year={2021}
}
Through the Backyard Worlds: Planet 9 citizen science project, we have identified a wide-separation (∼10′, ∼9900 au projected) substellar companion to the nearby (∼17.5 pc), mid-M dwarf Ross 19. We have developed a new formalism for determining chance alignment probabilities based on the BANYAN Σ tool, and find a 100% probability that this is a physically associated pair. Through a detailed examination of Ross 19A, we find that the system is metal-poor ([Fe/H]=−0.40±0.12) with an age of 7.2 −3… Expand

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