{"paper":{"title":"SDSS-IV eBOSS emission-line galaxy pilot survey","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.GA"],"primary_cat":"astro-ph.CO","authors_text":"A. A. Plazas, A. Benoit-L\\'evy, A. Bolton, A. Carnero Rosell, A. K. Romer, A. Prakash, A. Raichoor, A. Roodman, A. R. Walker, A. Simmons, B. Flaugher, C. E. Cunha, C. Le Cras, C. Maraston, C. Yeche, D. Bizyaev, D. Brooks, D. Capozzi, D. Gruen, D. J. James, D. M. Wilkinson, D. Oravetz, D. P. Schneider, D. Schlegel, D. Thomas, D. W. Gerdes, E. Bertin, E. Gaztanaga, E. Jullo, E. Malanushenko, E. Sanchez, E. S. Rykoff, E. Suchyta, F. B. Abdalla, F. J. Castander, F. Prada, F. Sobreira, G. Gutierrez, G. Tarle, G. Zhu, H. Zou, I. Sevilla-Noarbe, J. A. Newman, J. Bautista, J. Carretero, J. Comparat, J. Estrada, J. Frieman, J. L. Marshall, J-P. Kneib, J. R. Brownstein, J. Thaler, K. Honscheid, K. Kinemuchi, K. Kuehn, K. Pan, K. Reil, K. S. Dawson, L. N. da Costa, M. A. G. Maia, M. Banerji, M. Carrasco Kind, M. E. C. Swanson, M. Lima, M. March, M. Sako, M. Soares-Santos, N. Kuropatkin, N. Roe, O. Lahav, P. Doel, P. Fosalba, R. A. Gruendl, R. Miquel, S. Desai, S. Escoffier P. Gaulme, S. Jouvel, T. Delubac, T. F. Eifler, T. M. C. Abbott S. Allam, V. Malanushenko, V. Mariappan, V. Scarpine, W. J. Percival, Y. Zhang, Z. Xu","submitted_at":"2015-09-16T20:12:28Z","abstract_excerpt":"The Sloan Digital Sky Survey IV extended Baryonic Oscillation Spectroscopic Survey (SDSS-IV/eBOSS) will observe 195,000 emission-line galaxies (ELGs) to measure the Baryonic Acoustic Oscillation standard ruler (BAO) at redshift 0.9. To test different ELG selection algorithms, 9,000 spectra were observed with the SDSS spectrograph as a pilot survey based on data from several imaging surveys. First, using visual inspection and redshift quality flags, we show that the automated spectroscopic redshifts assigned by the pipeline meet the quality requirements for a reliable BAO measurement. We also s"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1509.05045","kind":"arxiv","version":3},"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"}