Evidence for Late-Time Feedback from the Discovery of Multiphase Gas in a Massive Elliptical at $z=0.4$

Fakhri S. Zahedy, Hsiao-Wen Chen, Erin Boettcher +3

We report the first detection of multiphase gas within a quiescent galaxy beyond $z\approx 0$. The observations use the brighter image of doubly lensed QSO HE 0047$-$1756 to probe t…