Overview
- The team published peer-reviewed, multiphase observations of the merging system CRISTAL-02 showing a huge plume of cold gas and warmer ionized gas being driven away from the galaxy.
- The study, published June 10, 2026, reports roughly 1.5 billion solar masses of cold gas in the outflow, projected speeds near 640 km/s, a star-formation rate of about 260 M☉ per year, and a mass outflow rate near 520 M☉ per year.
- Researchers interpret the wind as likely powered by supernovae from a merger-triggered starburst rather than by a currently active black hole, though they do not rule out past AGN activity in individual cases.
- Because the outflow is removing gas at roughly twice the rate it is converted into stars, the authors estimate the system could be quenched within ≲50 million years if no fresh cold gas is supplied.
- The result links resolved JWST NIRSpec/NIRCam and ALMA [C II] measurements to a clear quenching mechanism and offers a simple explanation for the large population of massive quiescent galaxies seen in the first billion years of cosmic history.