Validation of the exoplanet Kepler-21b using PAVO/CHARA long-baseline interferometry
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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.author | Huber, D | |
---|---|---|
dc.contributor.author | Ireland, Michael | |
dc.contributor.author | Bedding, Timothy Russell | |
dc.contributor.author | Howell, Steve B | |
dc.contributor.author | Maestro, V | |
dc.contributor.author | Merand, A | |
dc.contributor.author | Tuthill, Peter G | |
dc.contributor.author | White, T. R | |
dc.contributor.author | Farrington, C | |
dc.contributor.author | Goldfinger, P. J | |
dc.contributor.author | McAlister, H | |
dc.contributor.author | Schaefer, G. H | |
dc.contributor.author | Sturmann, J | |
dc.contributor.author | Sturmann, Laszlo | |
dc.contributor.author | ten Brummelaar, Theo | |
dc.contributor.author | Turner, Nils | |
dc.date.accessioned | 2015-12-10T23:22:35Z | |
dc.identifier.issn | 1745-3933 | |
dc.identifier.uri | http://hdl.handle.net/1885/66577 | |
dc.description.abstract | 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 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.publisher | Blackwell Publishing | |
dc.rights | Author/s retain copyright | |
dc.source | Monthly Notices of the Royal Astronomical Society: Letters | |
dc.subject | Keywords: Planets and satellites: individual: Kepler-2lb; Stars: individual: HD 179070; Techniques: interferometric | |
dc.title | Validation of the exoplanet Kepler-21b using PAVO/CHARA long-baseline interferometry | |
dc.type | Journal article | |
local.description.notes | Imported from ARIES | |
local.identifier.citationvolume | 423 | |
dc.date.issued | 2012 | |
local.identifier.absfor | 020110 - Stellar Astronomy and Planetary Systems | |
local.identifier.ariespublication | U3488905xPUB1308 | |
local.type.status | Published Version | |
local.contributor.affiliation | Huber, D, NASA Ames Research Center | |
local.contributor.affiliation | Ireland, Michael, College of Physical and Mathematical Sciences, ANU | |
local.contributor.affiliation | Bedding, Timothy Russell , University of Sydney | |
local.contributor.affiliation | Howell, Steve B, NASA Ames Research Center | |
local.contributor.affiliation | Maestro, V, University of Sydney | |
local.contributor.affiliation | Merand, A, European Southern Observatory | |
local.contributor.affiliation | Tuthill, Peter G, University of Sydney | |
local.contributor.affiliation | White, T R, University of Sydney | |
local.contributor.affiliation | Farrington, C, Georgia State University | |
local.contributor.affiliation | Goldfinger, P J, Georgia State University | |
local.contributor.affiliation | McAlister, H, Georgia State University | |
local.contributor.affiliation | Schaefer, G H, Georgia State University | |
local.contributor.affiliation | Sturmann, J, Georgia State University | |
local.contributor.affiliation | Sturmann, Laszlo, Georgia State University | |
local.contributor.affiliation | ten Brummelaar, T, Georgia State University | |
local.contributor.affiliation | Turner, Nils, Georgia State University | |
local.bibliographicCitation.issue | 1 | |
local.bibliographicCitation.startpage | L16 | |
local.bibliographicCitation.lastpage | L20 | |
local.identifier.doi | 10.1111/j.1745-3933.2012.01242.x | |
dc.date.updated | 2016-02-24T09:58:59Z | |
local.identifier.scopusID | 2-s2.0-84868131076 | |
dcterms.accessRights | Open Access | |
Collections | ANU Research Publications |
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