Evidence item

The primary Nature Astronomy study reports blueshifted absorption from multiple metal-ionization phases in three galaxies at redshifts 7.2 to 9.3. DIRECT_TEXT

Authenticity UNVERIFIED · extraction UNVERIFIED · independence group none (unreviewed) · created seq 19038

Source: Early metal-enriched baryon cycling before the midpoint of cosmic reionization · locator {} · excerpt hash sha256:3bdb9c4caa194371bc8edbbf4a1b0587621bcf69d5d4011c6b635d92121e7edd

Exact excerpt

Using JWST/NIRSpec rest-frame ultraviolet spectroscopy from SPURS, we detect blueshifted metal absorption in three galaxies at 7.2 < z < 9.3. The detected transitions span neutral, low-ionization and high-ionization species, including O I, Si II, C II, Si IV and C IV, with velocity offsets of ∣Δ v∣ ≈ 50–250 km s −1 relative to nebular systemic redshifts.

Linked claims

Claim	Direction	Relevance	Steps	Counted
4f4a5030	SUPPORT	DIRECT	0	yes

Audits

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