{"paper":{"title":"The Sloan Digital Sky Survey quasar catalog: ninth data release","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"Adam D. Myers, Adam S. Bolton, Alaina Shelden, Amy E. Kimball, Andreu Font-Ribera, Anze Slosar, Audrey Simmons, Benjamin A. Weaver, Britt Lundgren, Chelsea L. MacLeod, Christophe Y\\`eche, Claudia Maraston, Daniel Capellupo, Daniel J. Eisenstein, Daniel Oravetz, David H. Weinberg, David J. Schlegel, David Kirkby, David W. Hogg, Demitri Muna, Dmitry Bizyaev, Donald P. Schneider, Eduard Arnau, Elena Malanushenko, Emmanuel Rollinde, Eric Aubourg, Erin S. Sheldon, Fred Hamann, Garrett Ebelke, Gordon T. Richards, Hayley Finley, Howard Brewington, Ian D. McGreer, Isabelle P\\^aris, Isma\\\"el Perez-Fournon, Jean-Marc Le Goff, Jeremy Tinker, Jessica A. Kirkpatrick, Jian Ge, Jo Bovy, Joel R. Brownstein, Jordi Miralda-Escud\\'e, Joseph F. Hennawi, Julian Bautista, Kaike Pan, Khee-Gan Lee, Kyle Dawson, Linhua Jiang, Martin White, Matteo Viel, Matthew M. Pieri, Michael A. Strauss, Nao Suzuki, Nathalie Palanque-Delabrouille, Nicholas P. Ross, Nicolas Busca, Nur Filiz Ak, Pasquier Noterdaeme, Patrick B. Hall, Patrick Petitjean, Philip Engelke, Richard G. McMahon, Robert R. Gibson, Rupert A.C. Croft, Scott F. Anderson, Shirley Ho, Stephanie Snedden, Stephen Bailey, Timoth\\'ee Delubac, Viktor Malanushenko, William Carithers, William N. Brandt, W. Michael Wood-Vasey, Xiaohui Fan, Yue Shen, Zeljko Ivezic","submitted_at":"2012-10-18T16:11:10Z","abstract_excerpt":"We present the Data Release 9 Quasar (DR9Q) catalog from the Baryon Oscillation Spectroscopic Survey (BOSS) of the Sloan Digital Sky Survey III. The catalog includes all BOSS objects that were targeted as quasar candidates during the survey, are spectrocopically confirmed as quasars via visual inspection, have luminosities Mi[z=2]<-20.5 (in a $\\Lambda$CDM cosmology with H0 = 70 km/s/Mpc, $\\Omega_{\\rm M}$ = 0.3, and $\\Omega_{\\Lambda}$ = 0.7) and either display at least one emission line with full width at half maximum (FWHM) larger than 500 km/s or, if not, have interesting/complex absorption f"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1210.5166","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"}