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dc.contributor.authorPiskorz, Danielle
dc.contributor.authorBuzard, Cam
dc.contributor.authorLine, Michael R.
dc.contributor.authorKnutson, Heather A.
dc.contributor.authorBenneke, Björn
dc.contributor.authorCrockett, Nathan R.
dc.contributor.authorLockwood, Alexandra C.
dc.contributor.authorBlake, Geoffrey A.
dc.contributor.authorBarman, Travis S.
dc.contributor.authorBender, Chad
dc.contributor.authorDeming, Drake
dc.contributor.authorJohnson, John A.
dc.date.accessioned2019-01-03T17:15:03Z
dc.date.available2019-01-03T17:15:03Z
dc.date.issued2018-09
dc.identifier.citationDanielle Piskorz et al 2018 AJ 156 133en_US
dc.identifier.issn1538-3881
dc.identifier.doi10.3847/1538-3881/aad781
dc.identifier.urihttp://hdl.handle.net/10150/631257
dc.description.abstractWe describe the detection of water vapor in the atmosphere of the transiting hot Jupiter KELT-2Ab by treating the star-planet system as a spectroscopic binary with high-resolution, ground-based spectroscopy. We resolve the signal of the planet's motion with deep combined flux observations of the star and the planet. In total, six epochs of Keck NIRSPEC L-band observations were obtained, and the full data set was subjected to a cross-correlation analysis with a grid of self-consistent atmospheric models. We measure a radial projection of the Keplerian velocity, K-p, of 148 +/- 7 km s(-1), consistent with transit measurements, and detect water vapor at 3.8 sigma. We combine NIRSPEC L-band data with Spitzer IRAC secondary eclipse data to further probe the metallicity and carbon-to-oxygen ratio of KELT-2Ab's atmosphere. While the NIRSPEC analysis provides few extra constraints on the Spitzer data, it does provide roughly the same constraints on metallicity and carbon-to-oxygen ratio. This bodes well for future investigations of the atmospheres of non-transiting hot Jupiters.en_US
dc.description.sponsorshipW. M. Keck Foundation; NASA; NSF Astronomy Astrophysics; NASA Exoplanets Research Programs [AST-1109857, NNX16AI14G]; Sloan Foundationen_US
dc.language.isoenen_US
dc.publisherIOP PUBLISHING LTDen_US
dc.relation.urlhttp://stacks.iop.org/1538-3881/156/i=3/a=133?key=crossref.de01e6451aaacdd1613e30519245b7cben_US
dc.rights© 2018. The American Astronomical Society. All rights reserved.en_US
dc.subjectplanets and satellites: atmospheresen_US
dc.subjecttechniques: spectroscopicen_US
dc.titleGround- and Space-based Detection of the Thermal Emission Spectrum of the Transiting Hot Jupiter KELT-2Aben_US
dc.typeArticleen_US
dc.contributor.departmentUniv Arizona, Steward Observen_US
dc.contributor.departmentUniv Arizona, Lunar & Planetary Laben_US
dc.identifier.journalASTRONOMICAL JOURNALen_US
dc.description.collectioninformationThis item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at repository@u.library.arizona.edu.en_US
dc.eprint.versionFinal published versionen_US
dc.source.journaltitleThe Astronomical Journal
dc.source.volume156
dc.source.issue3
dc.source.beginpage133
refterms.dateFOA2019-01-03T17:15:03Z


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