No Top-heavy Stellar Initial Mass Function Needed: The Ionizing Radiation of GS9422 Can Be Powered by a Mixture of an Active Galactic Nucleus and Stars

JWST is producing high-quality rest-frame optical and UV spectra of faint galaxies at z > 4 for the first time, challenging models of galaxy and stellar populations. One galaxy recently observed at z = 5.943, GS9422, has nebular line and UV continuum emission that appears to require a high ionizi...

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Bibliographic Details

Published in:	The Astrophysical Journal Letters
Main Authors:	Yijia Li, Joel Leja, Benjamin D. Johnson, Sandro Tacchella, Rohan P. Naidu
Format:	Article
Language:	English
Published:	IOP Publishing 2024-01-01
Subjects:	Photoionization AGN host galaxies Interstellar medium High-redshift galaxies
Online Access:	https://doi.org/10.3847/2041-8213/ad5280