{"paper":{"title":"The K2-ESPRINT Project. I. Discovery of the Disintegrating Rocky Planet K2-22b with a Cometary Head and Leading Tail","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.EP","authors_text":"A. Fukui, A. W. Howard, A. W. Mann, D. Gandolfi, E. Gaidos, E. Jehin, E. Pall\\'e, F. Dai, F. Murgas, G. Nowak, G. W. Marcy, H. Isaacson, I. Ribas, J. DeVore, J. N. Winn, K. G. Stassun, L. Delrez, L. Yu, M. Gillon, M. Holman, M. Kuzuhara, M. Onitsuka, M. Paegert, N. Narita, P. A. Miles-P\\'aez, P. A. Monta\\~n\\'es-Rodr\\'iguez, R. Sanchis-Ojeda, S. Albrecht, S. Rappaport, T. Hirano, V. Van Eylen","submitted_at":"2015-04-16T20:01:00Z","abstract_excerpt":"We present the discovery of a transiting exoplanet candidate in the K2 Field-1 with an orbital period of 9.1457 hr: K2-22b. The highly variable transit depths, ranging from $\\sim$0\\% to 1.3\\%, are suggestive of a planet that is disintegrating via the emission of dusty effluents. We characterize the host star as an M-dwarf with $T_{\\rm eff} \\simeq 3800$ K. We have obtained ground-based transit measurements with several 1-m class telescopes and with the GTC. These observations (1) improve the transit ephemeris; (2) confirm the variable nature of the transit depths; (3) indicate variations in the"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1504.04379","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"}