Blueshifted metal absorption lines in three z=7.2-9.3 galaxies indicate that metal-enriched, kinematically disturbed gas was already present around galaxies before the midpoint of cosmic reionization.
A study based on the E-XQR-30 spectroscopic sample.Astronomy and Astrophysics687, A314 (2024)
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Early metal-enriched baryon cycling before the midpoint of cosmic reionization
Blueshifted metal absorption lines in three z=7.2-9.3 galaxies indicate that metal-enriched, kinematically disturbed gas was already present around galaxies before the midpoint of cosmic reionization.