JAGB 2.0: Improved Constraints on the J-region Asymptotic Giant Branch–based Hubble Constant from an Expanded Sample of JWST Observations

JAGB 2.0: Improved Constraints on the J-region Asymptotic Giant Branch–based Hubble Constant from an Expanded Sample of JWST Observations

The J-region asymptotic giant branch (JAGB) is an overdensity of stars in the near-infrared, attributed to carbon-rich AGB stars, and recently used as a standard candle for measuring extragalactic distances and the Hubble constant. Using JWST in Cycle 2, we extend JAGB measurements to six hosts of n...

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Bibliographic Details
Main Authors: Siyang Li, Adam G. Riess, Daniel Scolnic, Stefano Casertano, Gagandeep S. Anand
Format: Article
Language:English
Published: IOP Publishing 2025-01-01
Series:The Astrophysical Journal
Subjects:
Hubble constant
Observational cosmology
Standard candles
Asymptotic giant branch stars
Distance indicators
Stellar distance
Online Access:https://doi.org/10.3847/1538-4357/addd0c
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https://doi.org/10.3847/1538-4357/addd0c

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