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Journal article

Marvelous Metals: Surveying the Circumgalactic Medium of Simulated Dwarf Galaxies

Abstract

Dwarf galaxies are uniquely sensitive to feedback processes and known to experience substantial mass and metal loss from their disks. Here, we investigate the circumgalactic medium (CGM) of 64 isolated dwarf galaxies ( 6.040% toward lower masses. Our findings highlight the CGM (particularly its warm phase) as a key reservoir of mass and metals for dwarf galaxies across stellar masses, underscoring its importance in understanding the baryon cycle in the low-mass regime. Finally, we provide individual simulated galaxy properties and quantify the fraction of UV-observable mass to support future observational programs aimed at performing a metal budget around dwarf galaxies.

Authors

Piacitelli DR; Brooks AM; Christensen C; Sanchez NN; Faerman Y; Shen S; Cruz A; Keller B; Quinn TR; Wadsley J

Journal

The Astrophysical Journal, Vol. 993, No. 2,

Publisher

American Astronomical Society

Publication Date

November 10, 2025

DOI

10.3847/1538-4357/ae06a0

ISSN

0004-637X

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