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dc.contributor.authorFeinstein, Adina D.
dc.contributor.authorSchlieder, Joshua E.
dc.contributor.authorLivingston, John H.
dc.contributor.authorCiardi, David R.
dc.contributor.authorHoward, Andrew W.
dc.contributor.authorArnold, Lauren
dc.contributor.authorBarentsen, Geert
dc.contributor.authorBristow, Makennah
dc.contributor.authorChristiansen, Jessie L.
dc.contributor.authorCrossfield, Ian
dc.contributor.authorDressing, Courtney D.
dc.contributor.authorGonzales, Erica J.
dc.contributor.authorKosiarek, Molly
dc.contributor.authorLintott, Chris J.
dc.contributor.authorMiller, Grant
dc.contributor.authorMorales, Farisa Y.
dc.contributor.authorPetigura, Erik A.
dc.contributor.authorThackeray, Beverly
dc.contributor.authorAult, Joanne
dc.contributor.authorBaeten, Elisabeth
dc.contributor.authorJonkeren, Alexander F.
dc.contributor.authorLangley, James
dc.contributor.authorMoshinaly, Houssen
dc.contributor.authorPearson, Kirk
dc.contributor.authorTanner, Christopher
dc.contributor.authorTreasure, Joanna
dc.identifier.citationAdina D. Feinstein et al 2019 AJ 157 40en_US
dc.descriptionOriginal content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.en_US
dc.description.abstractObservations from the Kepler and K2 missions have provided the astronomical community with unprecedented amounts of data to search for transiting exoplanets and other astrophysical phenomena. Here, we present K2-288, a low-mass binary system (M2.0 ± 1.0; M3.0 ± 1.0) hosting a small (R p = 1.9 R ⊕), temperate (T eq = 226 K) planet observed in K2 Campaign 4. The candidate was first identified by citizen scientists using Exoplanet Explorers hosted on the Zooniverse platform. Follow-up observations and detailed analyses validate the planet and indicate that it likely orbits the secondary star on a 31.39-day period. This orbit places K2-288Bb in or near the habitable zone of its low-mass host star. K2-288Bb resides in a system with a unique architecture, as it orbits at >0.1 au from one component in a moderate separation binary (a proj ~ 55 au), and further follow-up may provide insight into its formation and evolution. Additionally, its estimated size straddles the observed gap in the planet radius distribution. Planets of this size occur less frequently and may be in a transient phase of radius evolution. K2-288 is the third transiting planet system identified by the Exoplanet Explorers program and its discovery exemplifies the value of citizen science in the era of Kepler, K2, and the Transiting Exoplanet Survey Satellite.en_US
dc.publisherIOP Publishingen_US
dc.rights© 2019. The American Astronomical Society.en_US
dc.subjectBinaries: closeen_US
dc.subjectPlanets and satellites: detectionen_US
dc.subjectPlanets and satellites: individualen_US
dc.subject(EPIC210693462Bb, K2-288Bb)en_US
dc.subjectTechniques: photometricen_US
dc.subjectTechniques: spectroscopicen_US
dc.titleK2-288Bb: A Small Temperate Planet in a Low-mass Binary System Discovered by Citizen Scientistsen_US
kusw.kuauthorCrossfield, Ian
kusw.kudepartmentPhysics and Astronomyen_US
kusw.oaversionScholarly/refereed, publisher versionen_US
kusw.oapolicyThis item meets KU Open Access policy criteria.en_US

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© 2019. The American Astronomical Society.
Except where otherwise noted, this item's license is described as: © 2019. The American Astronomical Society.