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New Cold Subdwarf Discoveries from Backyard Worlds and a Metallicity Classification System for T Subdwarfs

  • Authors: Adam J. Burgasser, Adam C. Schneider, Aaron M. Meisner, Dan Caselden, Chih-Chun Hsu, Roman Gerasimov, Christian Aganze, Emma Softich, Preethi Karpoor, Christopher A. Theissen, Hunter Brooks, Thomas P. Bickle, Jonathan Gagné, Ètienne Artigau, Michaël Marsset, Austin Rothermich, Jacqueline K. Faherty, J. Davy Kirkpatrick, Marc J. Kuchner, Nikolaj Stevnbak Andersen, Paul Beaulieu, Guillaume Colin, Jean Marc Gantier, Leopold Gramaize, Les Hamlet, Ken Hinckley, Martin Kabatnik, Frank Kiwy, David W. Martin, Diego H. Massat, William Pendrill, Arttu Sainio, Jörg Schümann, Melina Thévenot, Jim Walla, Zbigniew Wędracki

Adam J. Burgasser et al 2025 The Astrophysical Journal 982 .

  • Provider: AAS Journals

Caption: Figure 10.

Forward model fits to Y− (top left), J− (top right), H− (bottom left), and K−band (bottom right) spectra of GJ 576B. Each panel displays from top to bottom: the best-fit telluric model (blue), the best-fit stellar model (green), the observed data (black) compared to the full data model (magenta), and the difference of these (black) compared to the data uncertainty (gray band, ±1σ). The reduced ﹩{\chi }_{r}^{2}﹩ (Equation (9)) is listed along the right axis.

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