{"paper":{"title":"The core of the massive cluster merger MACS J0417.5-1154 as seen by VLT/MUSE","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Alastair C. Edge (CEA, A. Mark Swinbank (CEA, Cambridge), David Harvey (EPFL), Durham), Guillaume Mahler (Michigan), Harald Ebeling (IfA, Hawaii), Jean-Paul Kneib (EPFL), Johan Richard (CRAL), Keren Sharon (Michigan), Mathilde Jauzac (CEA, Michele Fumagalli (CEA, Philippe Salome (LERMA), Richard Massey (CEA, Steven Gillman (CEA, Steven L. Hamer (IoA","submitted_at":"2018-10-31T17:53:35Z","abstract_excerpt":"We present a multi-wavelength analysis of the core of the massive galaxy cluster MACS\\,J0417.5-1154 ($z = 0.441$; MACS\\;J0417). Our analysis takes advantage of VLT/MUSE observations which allow the spectroscopic confirmation of three strongly-lensed systems. One of these, nick-named \\emph{The Doughnut}, consists of three complete images of a complex ring galaxy at $z = 0.8718$ and a fourth, partial and radial image close to the Brightest Cluster Galaxy (BCG) only discernible thanks to its strong [OII] line emission. The best-fit mass model (rms of 0.38\\arcsec) yields a two-dimensional enclosed"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1811.02505","kind":"arxiv","version":2},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"}