{"paper":{"title":"A strange dwarf scenario for the formation of the peculiar double white dwarf binary SDSS J125733.63+542850.5","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"Long Jiang, Wen-Cong Chen, Xiang-Dong Li","submitted_at":"2018-05-06T10:39:47Z","abstract_excerpt":"The Hubble Space Telescope observation of the double white dwarf (WD) binary SDSS J125733.63$+$542850.5 reveal that the massive WD has a surface gravity log$g_1\\sim8.7$ (which implies a mass of $M_1\\sim1.06~{\\rm M_\\odot}$) and an effective temperature $T_1\\sim13000$ K, while the effective temperature of the low-mass WD ($M_2<0.24$ {\\rm M$_\\odot$}) is $T_2\\sim6400K$. Therefore, the massive and the low-mass WDs have a cooling age $\\tau_1\\sim1$ {\\rm Gyr} and $\\tau_2\\geq5$ {\\rm Gyr}, respectively. This is in contradiction with traditional binary evolution theory. In this Letter, we propose a stran"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1805.02187","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"}