{"paper":{"title":"Long-term CCD Photometry and Physical Properties of the sdB+M Eclipsing System 2M 1533+3759","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"Jae-Hyuck Youn, Jae Woo Lee, Kyeongsoo Hong, Wonyong Han","submitted_at":"2017-03-21T23:55:40Z","abstract_excerpt":"New CCD photometry of seven successive years from 2010 is presented for the HW Vir-type eclipsing binary 2M 1533+3759. Using the $VI$ light curves together with the radial-velocity data given by For et al. (2010), we determined the absolute parameters of each component to be $M_1$ = 0.442$\\pm$0.012 M$_\\odot$, $M_2$ = 0.124$\\pm$0.005 M$_\\odot$, $R_1$ = 0.172$\\pm$0.002 R$_\\odot$, $R_2$ = 0.157$\\pm$0.002 R$_\\odot$, $L_1$ = 19.4$\\pm$1.4 L$_\\odot$, and $L_2$ = 0.002$\\pm$0.002 L$_\\odot$. These indicate that 2M 1533+3759 is a detached system consisting of a normal sdB primary and an M7 dwarf companio"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1703.07472","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"}