{"paper":{"title":"Galaxy And Mass Assembly (GAMA): Testing galaxy formation models through the most massive galaxies in the Universe","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"A. C. Edge, A. E. Bauer, A. M. Hopkins, A. R. L\\'opez-S\\'anchez, A. S. G. Robotham, A. W. Graham, C. J. Conselice, C. Lidman, E. Cameron, E. Taylor, E. van Kampen, I. Baldry, J. Bland-Hawthorn, J. Liske, J. Loveday, J. Peacock, K. A. Pimbblet, M. A. Lara-L\\'opez, M. Cluver, M. Colless, M. L. P. Gunawardhana, P. Oliva-Altamirano, R. G. Sharp, S. Brough, S. Driver, S. Mahajan, S. Phillipps, T. Ponman, W. J. Couch","submitted_at":"2014-02-17T21:00:45Z","abstract_excerpt":"We have analysed the growth of Brightest Group Galaxies and Brightest Cluster Galaxies (BGGs/BCGs) over the last 3 billion years using a large sample of 883 galaxies from the Galaxy And Mass Assembly Survey. By comparing the stellar mass of BGGs and BCGs in groups and clusters of similar dynamical masses, we find no significant growth between redshift $z=0.27$ and $z=0.09$. We also examine the number of BGGs/BCGs that have line emission, finding that approximately 65 per cent of BGGs/BCGs show H$\\alpha$ in emission. From the galaxies where the necessary spectroscopic lines were accurately reco"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1402.4139","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"}