{"paper":{"title":"55 Cancri: Stellar Astrophysical Parameters, a Planet in the Habitable Zone, and Implications for the Radius of a Transiting Super-Earth","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.SR"],"primary_cat":"astro-ph.EP","authors_text":"10), (10) Laboratoire d'Astrophysique de Bordeaux), (2) Georgia State U., 3), (3) Hubble Fellow, (4) ESO, (5) CSIC-IEEC, (6) CHARA, (7) NOAO, 8), (8) Carnegie/DTM, (9) Universite de Bordeaux, Chris Farrington (6), David R. Ciardi (1), Gail Schaefer (6), Gerard T. van Belle (4), Harold A. McAlister (2), Judit Sturmann (6), Kaspar von Braun (1), Laszlo Sturmann (6), Mercedes Lopez-Morales (5, Nils H. Turner (6), P.J. Goldfinger (6) ((1) NASA Exoplanet Science Institute / Caltech, Russel White (2), Sean N. Raymond (9, Stephen R. Kane (1), Stephen T. Ridgway (7), Tabetha S. Boyajian (2, Theo A. ten Brummelaar (6)","submitted_at":"2011-06-06T19:00:41Z","abstract_excerpt":"The bright star 55 Cancri is known to host five planets, including a transiting super-Earth. The study presented here yields directly determined values for 55 Cnc's stellar astrophysical parameters based on improved interferometry: $R=0.943 \\pm 0.010 R_{\\odot}$, $T_{\\rm EFF} = 5196 \\pm 24$ K. We use isochrone fitting to determine 55 Cnc's age to be 10.2 $\\pm$ 2.5 Gyr, implying a stellar mass of $0.905 \\pm 0.015 M_{\\odot}$. Our analysis of the location and extent of the system's habitable zone (0.67--1.32 AU) shows that planet f, with period $\\sim$ 260 days and $M \\sin i = 0.155 M_{Jupiter}$, s"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1106.1152","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"}