{"paper":{"title":"The ATLAS3D Project-- VIII: Modelling the Formation and Evolution of Fast and Slow Rotator Early-Type Galaxies within $\\Lambda$CDM","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"Anne-Marie Weijmans, Davor Krajnovic, Eric Emsellem, Frederic Bournaud, Harald Kuntschner, Katherine Alatalo, Leo Blitz, Lisa M. Young, Marc Sarzi, Martin Bureau, Maxime Bois, Michele Cappellari, Nicholas Scott, Paolo Serra, Pierre-Alain Duc, Pierre-Yves Lablanche, P. T. de Zeeuw, Raffaella Morganti, Richard M. McDermid, Roger L. Davies, Roland Bacon, Sadegh Khochfar, Thorsten Naab, Timothy A. Davis, Tom Oosterloo","submitted_at":"2011-07-25T20:08:00Z","abstract_excerpt":"We propose a simple model for the origin of fast and slow rotator early-type galaxies (ETG) within the hierarchical $\\Lambda$CDM scenario, that is based on the assumption that the mass fraction of stellar discs in ETGs is a proxy for the specific angular momentum expressed via $\\lambda_R$. Within our model we reproduce the fraction of fast and slow rotators as a function of magnitude in the \\atl survey, assuming that fast rotating ETGs have at least 10% of their total stellar mass in a disc component. In agreement with \\atl observations we find that slow rotators are predominantly galaxies wit"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1107.5059","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"}