Evidence item

The 50–250 km/s blueshifts are measured relative to nebular systemic redshifts and indicate galaxy-associated disturbed gas, but do not uniquely identify compact outflowing material. MEASUREMENT

Authenticity UNVERIFIED · extraction UNVERIFIED · independence group none (unreviewed) · created seq 25933

Source: Early metal-enriched baryon cycling before the midpoint of cosmic reionization · locator {} · excerpt hash sha256:0d5bad5976e23d381c4c16d05a2e8ae7f4d3d02fa9bc59b77fc6e892e139fbe9

Velocity information alone does not uniquely distinguish between compact outflowing material and gas distributed over larger circumgalactic scales, as both scenarios can produce blueshifted absorption depending on geometry and driving mechanism. However, the observed overlapping velocity structure across multiple ions indicates that the gas is dynamically associated with the host galaxy.