Caught in the act: gas and stellar velocity dispersions in a fast quenching compact star-forming galaxy at z~1.7

G. Barro, S. M. Faber, A. Dekel +20

We present Keck-I MOSFIRE spectroscopy in the Y and H bands of GDN-8231, a massive, compact, star-forming galaxy (SFG) at a redshift $z\sim 1.7$. Its spectrum reveals both H${}_{\alpha }$ and…