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

Huber, D; Ireland, Michael; Bedding, Timothy Russell; Howell, Steve B; Maestro, V; Merand, A; Tuthill, Peter G; White, T. R; Farrington, C; Goldfinger, P. J; McAlister, H; Schaefer, G. H; Sturmann, J; Sturmann, Laszlo; ten Brummelaar, Theo; Turner, Nils

Description

We 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...[Show more]

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.identifier.issn1745-3933
dc.identifier.urihttp://hdl.handle.net/1885/66577
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.publisherBlackwell Publishing
dc.rightsAuthor/s retain copyright
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
local.description.notesImported from ARIES
local.identifier.citationvolume423
dc.date.issued2012
local.identifier.absfor020110 - Stellar Astronomy and Planetary Systems
local.identifier.ariespublicationU3488905xPUB1308
local.type.statusPublished Version
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.bibliographicCitation.issue1
local.bibliographicCitation.startpageL16
local.bibliographicCitation.lastpageL20
local.identifier.doi10.1111/j.1745-3933.2012.01242.x
dc.date.updated2016-02-24T09:58:59Z
local.identifier.scopusID2-s2.0-84868131076
dcterms.accessRightsOpen Access
CollectionsANU Research Publications

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