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Kinematics of the SN Refsdal host revealed by MUSE: a regularly rotating spiral galaxy at z similar or equal to 1.5

Di Teodoro, Enrico Maria; Grillo, C; Fraternali, F; Gobat, R; Karman, W; Mercurio, A; Rosati, P; Balestra, I; Caminha, G.B.; Caputi, K.I.; Lombardi, M; Suyu, S.H.; Treu, Tommaso; Vanzella, E


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 supernova ‘Refsdal’. Sp1149 lies at z ≃ 1.49, has a stellar mass M* ≃ 5 × 109 M⊙, has a star formation rate (SFR)≃1--6M⊙yr−1⁠, and represents a likely progenitor of a Milky Way-like galaxy. All the four multiple images of Sp1149 in our data show strong [OII]-line emissions pointing to a clear rotation pattern. We...[Show more]

CollectionsANU Research Publications
Date published: 2018
Type: Journal article
Source: Monthly Notices of the Royal Astronomical Society
DOI: 10.1093/mnras/sty175
Access Rights: Open Access


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