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dc.contributor.authorZink, JK
dc.contributor.authorHardegree-Ullman, KK
dc.contributor.authorChristiansen, JL
dc.contributor.authorPetigura, EA
dc.contributor.authorDressing, CD
dc.contributor.authorSchlieder, JE
dc.contributor.authorCiardi, DR
dc.contributor.authorCrossfield, IJM
dc.date.accessioned2021-09-20T18:22:24Z
dc.date.available2021-09-20T18:22:24Z
dc.identifier.urihttps://hdl.handle.net/1721.1/132441
dc.description.abstract© 2020. The American Astronomical Society. All rights reserved.. Using our K2 Campaign 5 fully automated planet-detection data set (43 planets), which has corresponding measures of completeness and reliability, we infer an underlying planet population model for the FGK dwarf sample (9257 stars). Implementing a broken power law for both the period and radius distributions, we find an overall planet occurrence of planets per star within a period range of 0.5-38 days. Making similar cuts and running a comparable analysis on the Kepler sample (2318 planets; 94,222 stars), we find an overall occurrence of 1.10 0.05 planets per star. Since the Campaign 5 field is nearly 120 angular degrees away from the Kepler field, this occurrence similarity offers evidence that the Kepler sample may provide a good baseline for Galactic inferences. Furthermore, the Kepler stellar sample is metal-rich compared to the K2 Campaign 5 sample, so a finding of occurrence parity may reduce the role of metallicity in planet formation. However, a weak (1.5σ) difference, in agreement with metal-driven formation, is found when assuming the Kepler model power laws for the K2 Campaign 5 sample and optimizing only the planet occurrence factor. This weak trend indicates that further investigation of metallicity-dependent occurrence is warranted once a larger sample of uniformly vetted K2 planet candidates is made available.en_US
dc.language.isoen
dc.publisherAmerican Astronomical Societyen_US
dc.relation.isversionof10.3847/1538-3881/aba123en_US
dc.rightsArticle is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.en_US
dc.sourceThe American Astronomical Societyen_US
dc.titleScaling K2. III. Comparable Planet Occurrence in the FGK Samples of Campaign 5 and Kepleren_US
dc.typeArticleen_US
dc.relation.journalAstronomical Journalen_US
dc.eprint.versionFinal published versionen_US
dc.type.urihttp://purl.org/eprint/type/JournalArticleen_US
eprint.statushttp://purl.org/eprint/status/PeerRevieweden_US
dc.date.updated2020-10-20T14:18:56Z
dspace.orderedauthorsZink, JK; Hardegree-Ullman, KK; Christiansen, JL; Petigura, EA; Dressing, CD; Schlieder, JE; Ciardi, DR; Crossfield, IJMen_US
dspace.date.submission2020-10-20T14:19:02Z
mit.journal.volume160en_US
mit.journal.issue2en_US
mit.licensePUBLISHER_POLICY
mit.metadata.statusAuthority Work and Publication Information Needed


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