JWST Imaging of the Closest Globular Clusters. II. Discovery of Brown Dwarfs in NGC 6397 and Measurement of Age from the Brown Dwarf Cooling Sequence, Using SANDee—A New Grid of Model Isochrones across the Hydrogen-burning Limit

Globular clusters contain vast repositories of metal-poor stars that represent some of the oldest stellar generations in the Universe. The archaeological footprint of early Galactic evolution may be retained in the measurable properties of globular clusters, such as their ages, mass functions, and c...

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Bibliographic Details

Published in:	The Astrophysical Journal
Main Authors:	Roman Gerasimov, Luigi R. Bedin, Adam J. Burgasser, Daniel Apai, Domenico Nardiello, Efrain Alvarado III, Jay Anderson
Format:	Article
Language:	English
Published:	IOP Publishing 2024-01-01
Subjects:	Globular star clusters Photometry Stellar populations Brown dwarfs Stellar evolutionary models
Online Access:	https://doi.org/10.3847/1538-4357/ad5551