{"paper":{"title":"A super-Earth and two sub-Neptunes transiting the nearby and quiet M dwarf TOI-270","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.EP","authors_text":"Adina D. Feinstein, Andrea Bonfanti, Andrew Vanderburg, Avi Shporer, B\\'arbara Rojas-Ayala, Benjamin T. Montet, Chelsea Huang, David R. Ciardi, David W. Latham, Diana Dragomir, Douglas A. Caldwell, Elisabeth Matthews, Emmanu\\\"el Jehin, Enric Palle, Eric B. Ting, Francisco J. Pozuelos, Franco Mallia, Gabor Furesz, George R. Ricker, Giovanni Isopi, Gordon Myers, Howard M. Relles, Ian A. Waite, Ian Crossfield, Jack J. Lissauer, Jacob L. Bean, James D. Armstrong, Jason A. Dittmann, Jennifer Burt, Jennifer G. Winters, John F. Kielkopf, Jon M. Jenkins, Joseph D. Twicken, Joshua N. Winn, Joshua Schlieder, Juan C. Su\\'arez, Karen A. Collins, Keith Horne, Kevin I. Collins, Khalid Barakoui, L. G. Bouma, Maximilian N. G\\\"unther, Michael Fausnaugh, Micha\\\"el Gillon, Michael Ireland, Natalia Guerrero, Natalie Batalha, Rachel A. Matson, Ramotholo Sefako, Roland K. Vanderspek, Samuel N. Quinn, Sara Seager, Sebastien Lepine, Songhu Wang, Stephen R. Kane, Steve B. Howell, Tansu Daylan, Thiam-Guan Tan, Tianjun Gan, Timothy D. Morton","submitted_at":"2019-03-14T16:36:41Z","abstract_excerpt":"We report the Transiting Exoplanet Survey Satellite discovery of three small planets transiting one of the nearest and brightest M dwarf hosts to date, TOI-270 (TIC 259377017; K-mag 8.3; 22.5 parsec). The M3V-type star is transited by the super-Earth-sized TOI-270 b (1.247+0.089-0.083 R_earth) and the sub-Neptune-sized exoplanets TOI-270 c (2.42+-0.13 R_earth) and TOI-270 d (2.13+-0.12 R_earth). The planets orbit close to a mean-motion resonant chain, with periods (3.36, 5.66, and 11.38 days) near ratios of small integers (5:3 and 2:1). TOI-270 is a prime target for future studies since: 1) it"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1903.06107","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/1903.06107/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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"}