Detection of Accretion Shelves Out to the Virial Radius of a Low-mass Galaxy with JWST

We report the serendipitous discovery of an extended stellar halo surrounding the low-mass galaxy Ark 227 ( M _* = 5 × 10 ^9 M _⊙ ; d = 35 Mpc) in deep JWST NIRCam imaging from the Blue Jay Survey. The F200W–F444W color provides robust star–galaxy separation, enabling the identification of stars at...

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Bibliographic Details

Published in:	The Astrophysical Journal
Main Authors:	Charlie Conroy, Benjamin D. Johnson, Pieter van Dokkum, Alis Deason, Sandro Tacchella, Sirio Belli, William P. Bowman, Rohan P. Naidu, Minjung Park, Roberto Abraham, Razieh Emami
Format:	Article
Language:	English
Published:	IOP Publishing 2024-01-01
Subjects:	Galaxy stellar halos
Online Access:	https://doi.org/10.3847/1538-4357/ad414a