SPT-CLJ2040-4451: An SZ-Selected Galaxy Cluster at z = 1.478 With Significant Ongoing Star Formation
Bayliss, M.B. et al, including Mohr, J., Bocquet, S., Saro, A. and Zenteno, A.
Keywords
Astrophysics - Cosmology and Extragalactic Astrophysics
Abstract
SPT-CLJ2040-4451 -- spectroscopically confirmed at z = 1.478 -- is the highest redshift galaxy cluster yet discovered via the Sunyaev-Zel_s14dovich effect. SPT-CLJ2040-4451 was identified in the first 720 deg^2 of the South Pole Telescope Sunyaev-Zel_s14dovich (SPT-SZ) survey, and confirmed in follow-up imaging and spectroscopy. From multi-object spectroscopy with Magellan-I/Baade_s16IMACS we measure spectroscopic redshifts for 15 cluster member galaxies, all of which have strong [O II] 3727 emission.
