{ "id": "1810.10021", "version": "v1", "published": "2018-10-23T18:00:03.000Z", "updated": "2018-10-23T18:00:03.000Z", "title": "Dissecting the Main Sequence: AGN Activity and Bulge Growth in the Local Universe", "authors": [ "Conor McPartland", "David B. Sanders", "Lisa J. Kewley", "Sarah K. Leslie" ], "comment": "5 pages, 3 figures", "categories": [ "astro-ph.GA" ], "abstract": "Local galaxies from the Sloan Digital Sky Survey are used to provide additional support for an evolutionary pathway in which AGN activity is associated with star-formation quenching. Composite, Seyfert 2 and LINER galaxies account for $\\sim$60\\% of all star-formation in massive galaxies ($M_\\star > 10^{10.5} M_\\odot$). Inclusion of these galaxies results in a \"turnover\" in the $SFR - M_\\star$ relation for massive galaxies. Our analysis shows that bulge growth has already occurred in the most massive galaxies ($M_\\star > 10^{10.5}$ $M_\\odot$), and bulges continue to grow as galaxies quench and redden, $(g-r)$ = 0.5 $\\rightarrow$ 0.75. Significant bulge growth is also occurring in low mass starburst galaxies ($M_\\star < 10^{10.5} M_\\odot$) at 0.5 dex above the \"main sequence\" (MS), where we find an increase in $B/T$ from 0.1 $\\rightarrow$ 0.3 and bluer colours, $(g-r) < 0.25$ compared to low-mass galaxies on the MS.", "revisions": [ { "version": "v1", "updated": "2018-10-23T18:00:03.000Z" } ], "analyses": { "keywords": [ "agn activity", "main sequence", "local universe", "massive galaxies", "sloan digital sky survey" ], "note": { "typesetting": "TeX", "pages": 5, "language": "en", "license": "arXiv", "status": "editable" } } }