{"paper":{"title":"Star-galaxy classification in the Dark Energy Survey Y1 dataset","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.CO"],"primary_cat":"astro-ph.IM","authors_text":"A. A. Plazas, A. Carnero-Rosell, A. Choi, A. Drlica-Wagner, A. J. Ross, A. R. Walker, B. Flaugher, B. Hoyle, B. Moraes, B. Nord, B. Santiago, B. Yanny, C. Avestruz, C. Bonnett, C. Cunha, C. Davis, D. Brooks, D. Gruen, D. James, D. Kirk, D. L. Hollowood, D. L. Tucker, D. Thomas, E. Balbinot, E. Bertin, E. Fernandez, E. Gaztanaga, E. Kim, E. Krause, E. Sanchez, E. Sheldon, E. S. Rykoff, E. Suchyta, F. Abdalla, F. Menanteau, F. Sobreira, G. Gutierrez, G. Tarle, I. Sevilla-Noarbe, J. Aleksi\\'c, J. Carretero, J. De Vicente, J. Frieman, J. Garcia-Bellido, J. Gschwend, K. Bechtol, K. Honscheid, K. Kuehn, K. Wei, L. da Costa, M. A. G. Maia, M. Banerji, M. Carrasco-Kind, M. E. C. Swanson, M. J. March\\~a, M. Lima, M. March, M. Schubnell, M. Smith, M. Soares-Santos, M. T. Soumagnac, O. Lahav, P. Doel, R. Brunner, R. C. Smith, R. G. McMahon, R. Gruendl, R. L. C. Ogando, R. Miquel, R. Schindler, S. Allam, S. Desai, T. Abbott, T. Giannantonio, T. Jeltema, T. S. Li, V. Scarpine, W. Wester","submitted_at":"2018-05-07T10:08:35Z","abstract_excerpt":"We perform a comparison of different approaches to star-galaxy classification using the broad-band photometric data from Year 1 of the Dark Energy Survey. This is done by performing a wide range of tests with and without external `truth' information, which can be ported to other similar datasets. We make a broad evaluation of the performance of the classifiers in two science cases with DES data that are most affected by this systematic effect: large-scale structure and Milky Way studies. In general, even though the default morphological classifiers used for DES Y1 cosmology studies are suffici"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1805.02427","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"}