Kinematics of the SN Refsdal host revealed by MUSE: a regularly rotating spiral galaxy at z~1.5

We use Multi Unit Spectroscopic Explorer (MUSE) observations of the galaxy cluster MACS J1149.5+2223 to explore the kinematics of the grand-design spiral galaxy Sp1149 hosting the SN Refsdal. Sp1149 lies at z\simeq1.49, has a stellar mass M_*\simeq5\times10^9 \, \mathrm{M_\odot}, a star-formation rate \mathrm{SFR} \simeq1-6 \, \mathrm{M_\odot/yr} and represents a likely... Show more