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No top-heavy stellar initial mass function needed: the ionizing radiation of GS9422 can be powered by a mixture of AGN and stars

By Yijia Li and others
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 ionizing photon production efficiency. This... Show more
August 30, 2024
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No top-heavy stellar initial mass function needed: the ionizing radiation of GS9422 can be powered by a mixture of AGN and stars
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