{"paper":{"title":"The X-ray to optical-UV luminosity ratio of X-ray selected Type 1 AGN in XMM-COSMOS","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"A. Bongiorno, A. Comastri, A. Iovino, A. Merloni, A.M. Koekemoer, B. Garilli, C. Vignali, D. Vergani, E. Le Floc'h, E. Lusso, E. Schinnerer, F. Civano, F. Fiore, F. Lamareille, G. Zamorani, J.P. Kneib, J.R. Trump, J. Silverman, K. Iwasawa, K. Jahnke, M. Bolzonella, M. Brusa, M. Elvis, M. Mignoli, M. Salvato, M. Sargent, M. Scodeggio, N. Cappelluti, O. Le F\\`evre, R. Gilli, S. Lilly, V. Mainieri","submitted_at":"2009-12-21T14:00:00Z","abstract_excerpt":"We present a study of the X-ray to optical properties of a sample of 545 X-ray selected Type 1 AGN, from the XMM-COSMOS survey, over a wide range of redshifts ($0.04<\\z<4.25$) and X-ray luminosities ($40.6 \\leq \\Log \\Lhard \\leq 45.3$). About 60% of them are spectroscopically identified Type 1 AGN, while the others have a reliable photometric redshift and are classified as Type 1 AGN on the basis of their multi-band Spectral Energy Distributions. We discuss the relationship between UV and X-ray luminosity, as parameterized by the $\\alphaox$ spectral slope, and its dependence on redshift and lum"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0912.4166","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"}