{"paper":{"title":"Deep and Wide Photometry of Two Open Clusters NGC 1245 and NGC 2506: CCD Observation and Physical Properties","license":"http://creativecommons.org/licenses/publicdomain/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"H. B. Ann, S. H. Lee, Y.-W. Kang","submitted_at":"2012-08-06T04:07:07Z","abstract_excerpt":"We have conducted VI CCD photometry of the two open clusters NGC 1245 and NGC 2506 using the CFH12K CCD camera. Our photometry covers a sky area of 84'X82' and 42'X81' for the two clusters, respectively, and reaches down to V = 23. We derived the physical parameters using detailed theoretical isochrone fittings using 2 minimization. The derived cluster parameters are E(B-V) = 0.24+/-0.05 and 0.03+/-0.04, (V-M_V)_0 = 12.25+/-0.12 and 12.47+/-0.08, age(Gyr) = 1.08+/-0.09 and 2.31+/-0.16, and [Fe/H]= -0.08+/-0.06 and -0.24+/-0.06, respectively for NGC 1245 and NGC 2506, We present the luminosity "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1208.1080","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"}