{"paper":{"title":"The accretion histories of brightest cluster galaxies from their stellar population gradients","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"2), 4), 6, 7), Anja von der Linden (5, Astronomy, Australian National University), Chris Lidman (2), Cosmology, Cynthia W. Mitchell Institute for Fundamental Physics, Department of Physics, Jimmy (3), Kim-Vy Tran (3), Macquarie University. (5) Dark Cosmology Centre, Niels Bohr Institute, Paola Oliva-Altamirano (1, Richard M. McDermid (2, Rob Sharp (8) ((1) Centre for Astrophysics & Supercomputing, Sarah Brough (2), Stanford University. (7) Department of Physics, Stanford University. (8) Research School of Astronomy & Astrophysics, Swinburne University of Technology. (2) Australian Astronomical Observatory. (3) George P., Texas A&M University. (4) Department of Physics & Astronomy, University of Copenhagen. (6) Kavli Institute for Particle Astrophysics, Warrick J. Couch (1","submitted_at":"2015-03-04T21:00:18Z","abstract_excerpt":"We analyse the spatially-resolved stellar populations of 9 local ($z<0.1$) Brightest Cluster Galaxies (BCGs) observed with VIMOS in IFU mode. Our sample is composed of 7 slow-rotating and 2 fast-rotating BCGs. We do not find a connection between stellar kinematics and stellar populations in this small sample. The BCGs have shallow metallicity gradients (median $\\Delta$[Fe/H] $= -0.11\\pm0.1$), high central metallicities (median $[$Fe/H]$_{[\\alpha/Fe]=0} = 0.13\\pm0.07$), and a wide range of central ages (from 5 to 15 Gyr). We propose that the reason for this is diverse evolutionary paths in BCGs"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1503.01465","kind":"arxiv","version":1},"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"}