{"paper":{"title":"The 2dF QSO Redshift Survey - XII. The spectroscopic catalogue and luminosity function","arxiv_id":"astro-ph/0403040","primary_cat":"astro-ph","submitted_at":"2004-03-01T22:47:10+00:00","version_compiled":"v1"},"notice":"Every quoted sentence is the authors' text from the arXiv listing abstract. Labels and probabilities are the outputs of classifier-1.13.0 on the question bank abstract-p1-20260923, exactly as returned. 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galaxies.","hedge":{"p":1.0,"label":"asserted"},"own_p":0.87,"main_claim_p":0.06,"quantitative":true,"quantitative_p":0.99,"role_probabilities":{"gap":0.0,"method":0.0,"result":0.83,"background":0.0,"limitation":0.0,"future_work":0.0,"contribution":0.17,"interpretation":0.0}},{"i":2,"p":0.93,"id":"s2","own":true,"role":"result","text":"We obtained a reliable spectroscopic identification for 86 per cent of objects observed with 2dF.","hedge":{"p":1.0,"label":"asserted"},"own_p":0.96,"main_claim_p":0.05,"quantitative":true,"quantitative_p":0.99,"role_probabilities":{"gap":0.0,"method":0.03,"result":0.93,"background":0.0,"limitation":0.03,"future_work":0.0,"contribution":0.01,"interpretation":0.0}},{"i":3,"p":0.79,"id":"s3","own":true,"role":"contribution","text":"We also report on the 6dF QSO Redshift Survey (6QZ), based on UKST 6dF observations of 1564 brighter 16<b_J<18.25 sources selected from the same photographic input catalogue.","hedge":{"p":0.99,"label":"asserted"},"own_p":0.87,"main_claim_p":0.03,"quantitative":true,"quantitative_p":0.96,"role_probabilities":{"gap":0.0,"method":0.21,"result":0.0,"background":0.0,"limitation":0.0,"future_work":0.0,"contribution":0.79,"interpretation":0.0}},{"i":4,"p":0.96,"id":"s4","own":true,"role":"result","text":"In total, we identified 322 QSOs spectroscopically in the 6QZ.","hedge":{"p":1.0,"label":"asserted"},"own_p":0.96,"main_claim_p":0.03,"quantitative":true,"quantitative_p":0.99,"role_probabilities":{"gap":0.0,"method":0.0,"result":0.96,"background":0.0,"limitation":0.0,"future_work":0.0,"contribution":0.04,"interpretation":0.0}},{"i":5,"p":0.6,"id":"s5","own":true,"role":"interpretation","text":"The completed 2QZ is, by more than a factor 50, the largest homogeneous QSO catalogue ever constructed at these faint limits (b_J<20.85) and high QSO surface densities (35 QSOs deg^-2).","hedge":{"p":1.0,"label":"asserted"},"own_p":0.82,"main_claim_p":0.31,"quantitative":true,"quantitative_p":0.99,"role_probabilities":{"gap":0.0,"method":0.0,"result":0.2,"background":0.0,"limitation":0.0,"future_work":0.0,"contribution":0.2,"interpretation":0.6}},{"i":6,"p":0.99,"id":"s6","own":false,"role":"interpretation","text":"As such it represents an important resource in the study of the Universe at moderate-to-high redshifts.","hedge":{"p":1.0,"label":"asserted"},"own_p":0.2,"main_claim_p":0.12,"quantitative":false,"quantitative_p":0.05,"role_probabilities":{"gap":0.0,"method":0.0,"result":0.0,"background":0.0,"limitation":0.0,"future_work":0.0,"contribution":0.01,"interpretation":0.99}},{"i":7,"p":0.99,"id":"s7","own":true,"role":"contribution","text":"As an example of the results possible with the 2QZ, we also present our most recent analysis of the optical QSO luminosity function and its cosmological evolution with redshift.","hedge":{"p":0.82,"label":"asserted"},"own_p":0.92,"main_claim_p":0.08,"quantitative":false,"quantitative_p":0.06,"role_probabilities":{"gap":0.0,"method":0.0,"result":0.01,"background":0.0,"limitation":0.0,"future_work":0.0,"contribution":0.99,"interpretation":0.0}},{"i":8,"p":1.0,"id":"s8","own":true,"role":"result","text":"For a flat, Omega_m=0.3 and Omega_lam=0.7, Universe, we find that a double power law with luminosity evolution that is exponential in look-back time, t, of the form L*(z) exp(6.15t), equivalent to an e-folding time of 2Gyr, provides an acceptable fit to the redshift dependence of the QSO luminosity function over the range 0.4 < z < 2.1 and 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