Image Details

Choose export citation format:

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 6.

Best-fit LOWZ models and model parameter distributions for Keck/NIRES data for the metallicity benchmarks LHS 6176B (left) and GJ 576B (right). The top panels compare the observed spectra in absolute flux density (black lines) to the best-fit model (magenta line). The bottom panels show parameter distributions for Teff, ﹩\mathrm{log}g﹩, [M/H], C/O, and radius. Plots along the diagonal axis show the marginalized posterior distributions for each parameter, with 16%, 50%, and 84% quantiles indicated as vertical dashed lines (see Table 7). The remaining contour plots display 2D distributions of parameter pairs in the posterior solutions, highlighting parameter correlations. Note that parameter distributions are weighted by their χ2 value following Equation 10.

Other Images in This Article

Show More

Copyright and Terms & Conditions

Additional terms of reuse