{"paper":{"title":"Eight New Milky Way Companions Discovered in First-Year Dark Energy Survey Data","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"A. A. Plazas, A. Benoit-Levy, A. Carnero Rosell, A. Drlica-Wagner, A. E. Evrard, A. Fausti Neto, A. H. Bauer, A. K. Romer, A. Pieres, A. Queiroz, A. Roodman, A. R. Walker, B. Flaugher, B. Jain, B. Nord, B. Santiago, B. Yanny, C. B. D'Andrea, C. Miller, D. A. Finley, D. Brooks, D. Gerdes, D. Gruen, D. James, D. L. Burke, D. L. DePoy, D. Petravick, D. Thomas, D. Tucker, E. Balbinot, E. Bertin, E. Buckley-Geer, E. Fernandez, E. Gaztanaga, E. Luque, E. Neilsen, E. Rozo, E. Sanchez, E. S. Rykoff, E. Suchyta, F. J. Castander, F. Sobreira, G. Gutierrez, G. M. Bernstein, G. Tarle, H. Lin, H. T. Diehl, I. Sevilla, J. D. Simon, J. Estrada, J. Frieman, J. Hao, J. Marshall, J. Mohr, J. Peoples, J. Thaler, J. Zuntz, K. Bechtol, K. Honscheid, K. Kuehn, K. W. Merritt, L. Girardi, L. N. da Costa, M. A. G. Maia, M. E. C. Swanson, M. Gladders, M. Makler, M. March, M. Sako, M. Schubnell, M. Soares-Santos, N. Kuropatkin, O. Lahav, P. Martini, P. Williams, R. A. Bernstein, R. A. Gruendl, R. Armstrong, R. Covarrubias, R. C. Smith, R. H. Wechsler, R. Kron, R. Miquel, R. Nichol, R. Ogando, S. Allam, S. Desai, S. Kent, T. Abbott, T. F. Eifler, The DES Collaboration, T. S. Li, V. Scarpine, W. Wester","submitted_at":"2015-03-09T17:54:00Z","abstract_excerpt":"We report the discovery of eight new Milky Way companions in ~1,800 deg^2 of optical imaging data collected during the first year of the Dark Energy Survey (DES). Each system is identified as a statistically significant over-density of individual stars consistent with the expected isochrone and luminosity function of an old and metal-poor stellar population. The objects span a wide range of absolute magnitudes (M_V from -2.2 mag to -7.4 mag), physical sizes (10 pc to 170 pc), and heliocentric distances (30 kpc to 330 kpc). Based on the low surface brightnesses, large physical sizes, and/or lar"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1503.02584","kind":"arxiv","version":2},"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"}