New Cold Subdwarf Discoveries from Backyard Worlds and a Metallicity Classification System for T Subdwarfs by Burgasser, Adam J, Schneider, Adam C, Meisner, Aaron M, Caselden, Dan, Hsu, Chih-Chun, Gerasimov, Roman, Aganze, Christian, Softich, Emma, Karpoor, Preethi, Theissen, Christopher A, Brooks, Hunter, Bickle, Thomas P, Gagné, Jonathan, Artigau, Étienne, Marsset, Michaël, Rothermich, Austin, Faherty, Jacqueline K, J Davy Kirkpatrick, Kuchner, Marc J, Nikolaj Stevnbak Andersen, Beaulieu, Paul, Guillaume, Colin, Gantier, Jean Marc, Gramaize, Leopold, Hamlet, Les, Hinckley, Ken, Kabatnik, Martin, Kiwy, Frank, Martin, David W, Massat, Diego H, Pendrill, William, Sainio, Arttu, Schümann, Jörg, Thévenot, Melina, Walla, Jim, Wędracki, Zbigniew, the Backyard Worlds, Planet 9 Collaboration

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