We present a gravitational-lensing model of MACS J1149.5+2223 using ultra-deep Hubble Frontier Fields imaging data and spectroscopic redshifts from HST grism and Very Large Telescope (VLT)/MUSE spectroscopic data. We create total mass maps using 38 multiple images (13 sources) and 608 weak-lensing galaxies, as well as 100 multiple images of 31 star-forming regions in the galaxy that hosts supernova Refsdal. We find good agreement with a range of recent models within the HST field of view. We present a map of the ratio of projected stellar mass to total mass (f_) and find that the stellar mass fraction for this cluster peaks on the primary BCG. Averaging within a radius of 0.3Mpc, we obtain a value of =0.012-0.003_^+0.004^, consistent with other recent results for this ratio in cluster environments, though with a large global error (up to {delta}f_=0.005) primarily due to the choice of IMF. We compare values of f*_ and measures of star formation efficiency for this cluster to other Hubble Frontier Fields clusters studied in the literature, finding that MACS1149 has a higher stellar mass fraction than these other clusters but a star formation efficiency typical of massive clusters.

Cone search capability for table J/ApJ/859/58/table1 (Multiply imaged systems)

Cone search capability for table J/ApJ/859/58/table2 (Multiple images of star-forming knots in the SN Refsdal host galaxy)