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Validation of the exoplanet Kepler-21b using PAVO/CHARA long-baseline interferometry

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dc.contributor.authorHuber, D
dc.contributor.authorIreland, Michael
dc.contributor.authorBedding, Timothy Russell
dc.contributor.authorHowell, Steve B
dc.contributor.authorMaestro, V
dc.contributor.authorMerand, A
dc.contributor.authorTuthill, Peter G
dc.contributor.authorWhite, T. R
dc.contributor.authorFarrington, C
dc.contributor.authorGoldfinger, P. J
dc.contributor.authorMcAlister, H
dc.contributor.authorSchaefer, G. H
dc.contributor.authorSturmann, J
dc.contributor.authorSturmann, Laszlo
dc.contributor.authorten Brummelaar, Theo
dc.contributor.authorTurner, Nils
dc.date.accessioned2015-12-10T23:22:35Z
dc.date.issued2012
dc.date.updated2016-02-24T09:58:59Z
dc.description.abstractWe present long-baseline interferometry of the Kepler exoplanet host star HD179070 (Kepler-21) using the Precision Astronomical Visible Observations (PAVO) beam combiner at the Center for High Angular Resolution Astronomy (CHARA) Array. The visibility data are consistent with a single star and exclude stellar companions at separations ~1-1000 mas (~0.1-113 au) and contrasts <3.5 mag. This result supports the validation of the 1.6R⊕ exoplanet Kepler-21b by Howell et al. and complements the constraints set by adaptive optics imaging, speckle interferometry and radial-velocity observations to rule out false positives due to stellar companions. We conclude that long-baseline interferometry has strong potential to validate transiting extrasolar planets, particularly for future projects aimed at brighter stars and for host stars where radial-velocity follow-up is not available.
dc.identifier.issn1745-3933
dc.identifier.urihttp://hdl.handle.net/1885/66577
dc.publisherBlackwell Publishing
dc.rightsAuthor/s retain copyrighten_AU
dc.sourceMonthly Notices of the Royal Astronomical Society: Letters
dc.subjectKeywords: Planets and satellites: individual: Kepler-2lb; Stars: individual: HD 179070; Techniques: interferometric
dc.titleValidation of the exoplanet Kepler-21b using PAVO/CHARA long-baseline interferometry
dc.typeJournal article
dcterms.accessRightsOpen Accessen_AU
local.bibliographicCitation.issue1
local.bibliographicCitation.lastpageL20
local.bibliographicCitation.startpageL16
local.contributor.affiliationHuber, D, NASA Ames Research Center
local.contributor.affiliationIreland, Michael, College of Physical and Mathematical Sciences, ANU
local.contributor.affiliationBedding, Timothy Russell , University of Sydney
local.contributor.affiliationHowell, Steve B, NASA Ames Research Center
local.contributor.affiliationMaestro, V, University of Sydney
local.contributor.affiliationMerand, A, European Southern Observatory
local.contributor.affiliationTuthill, Peter G, University of Sydney
local.contributor.affiliationWhite, T R, University of Sydney
local.contributor.affiliationFarrington, C, Georgia State University
local.contributor.affiliationGoldfinger, P J, Georgia State University
local.contributor.affiliationMcAlister, H, Georgia State University
local.contributor.affiliationSchaefer, G H, Georgia State University
local.contributor.affiliationSturmann, J, Georgia State University
local.contributor.affiliationSturmann, Laszlo, Georgia State University
local.contributor.affiliationten Brummelaar, T, Georgia State University
local.contributor.affiliationTurner, Nils, Georgia State University
local.contributor.authoruidIreland, Michael, u5544212
local.description.notesImported from ARIES
local.identifier.absfor020110 - Stellar Astronomy and Planetary Systems
local.identifier.ariespublicationU3488905xPUB1308
local.identifier.citationvolume423
local.identifier.doi10.1111/j.1745-3933.2012.01242.x
local.identifier.scopusID2-s2.0-84868131076
local.type.statusPublished Version

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