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dc.rights.licensePublished 2021 January 11 • © 2021. The American Astronomical Society. All rights reserved.-
dc.contributor.authorAlam, M. K.-
dc.contributor.authorLópez Morales, M.-
dc.contributor.authorMacDonald, R. J.-
dc.contributor.authorNikolov, N.-
dc.contributor.authorKirk, J.-
dc.contributor.authorGoyal, J. M.-
dc.contributor.authorSing, D. K.-
dc.contributor.authorWakeford, H. R.-
dc.contributor.authorRathcke, A. D.-
dc.contributor.authorDeming, D. L.-
dc.contributor.authorSanz Forcada, J.-
dc.contributor.authorLewis, N. K.-
dc.contributor.authorBarstow, J. K.-
dc.contributor.authorMikal Evans, T.-
dc.contributor.authorBuchhave, L. A.-
dc.identifier.citationThe Astrophysical Journal Letters 906(2): L10(2021)es
dc.description.abstractExoplanets with cloud-free, haze-free atmospheres at the pressures probed by transmission spectroscopy represent a valuable opportunity for detailed atmospheric characterization and precise chemical abundance constraints. We present the first optical to infrared (0.3−5 μm) transmission spectrum of the hot Jupiter WASP-62b, measured with Hubble/STIS and Spitzer/IRAC. The spectrum is characterized by a 5.1σ detection of Na i absorption at 0.59 μm, in which the pressure-broadened wings of the Na D-lines are observed from space for the first time. A spectral feature at 0.4 μm is tentatively attributed to SiH at 2.1σ confidence. Our retrieval analyses are consistent with a cloud-free atmosphere without significant contamination from stellar heterogeneities. We simulate James Webb Space Telescope (JWST) observations, for a combination of instrument modes, to assess the atmospheric characterization potential of WASP-62b. We demonstrate that JWST can conclusively detect Na, H2O, FeH, NH3, CO, CO2, CH4, and SiH within the scope of its Early Release Science (ERS) program. As the only transiting giant planet currently known in the JWST Continuous Viewing Zone, WASP-62b could prove a benchmark giant exoplanet for detailed atmospheric characterization in the James Webb
dc.description.sponsorshipThe authors thank the referee for insightful comments and suggestions. M.K.A. thanks Mark Marley for useful discussions. R.J.M. thanks Sergei Yurchenko for helpful discussions on molecular line lists. This paper makes use of observations from the NASA/ESA Hubble Space Telescope, obtained at the Space Telescope Science Institute, which is operated by the Association of Universities for Research in Astronomy, Inc., under NASA contract NAS 5-26555. These observations are associated with the Hubble GO program 14767. M.K.A. acknowledges support by the National Science Foundation through a Graduate Research Fellowship. J.S.F. acknowledges support from the Spanish State Research Agency project AYA2016-79425-C3-2-P. Per AAS Journals policy, all supplementary figures are included in this public figshare
dc.publisherIOP Science Publishinges
dc.relationinfo:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/AYA2016-79425-C3-2-P/ES/ENANAS MARRONES Y PLANETAS AISLADOS Y COMO COMPAÑEROS DE ESTRELLAS/-
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 Internationales
dc.subjectExoplanets atmosphereses
dc.subjectPlanetary atmosphereses
dc.subjectExoplanet atmospheric compositiones
dc.titleEvidence of a Clear Atmosphere for WASP-62b: The Only Known Transiting Gas Giant in the JWST Continuous Viewing Zonees
dc.contributor.orcidAlam, M. K. [0000-0003-4157-832X]-
dc.contributor.orcidLópez Morales, M. [0000-0003-3204-8183]-
dc.contributor.orcidMacDonald, R. J. [0000-0003-4816-3469]-
dc.contributor.orcidNikolov, N. [0000-0002-6500-3574]-
dc.contributor.orcidKirk, J. [0000-0002-4207-6615]-
dc.contributor.orcidGoyal, J. M. [0000-0002-8515-7204]-
dc.contributor.orcidSing, D. K. [0000-0001-6050-7645]-
dc.contributor.orcidWakeford, H. R. [0000-0003-4328-3867]-
dc.contributor.orcidRathcke, A. D. [0000-0002-4227-4953]-
dc.contributor.orcidDeming, D. L. [0000-0001-5727-4094]-
dc.contributor.orcidSanz Forcada, J. [0000-0002-1600-7835]-
dc.contributor.orcidLewis, N. K. [0000-0002-8507-1304]-
dc.contributor.orcidBarstow, J. K. [0000-0003-3726-5419]-
dc.contributor.orcidMikal Evans, T. [0000-0001-5442-1300]-
dc.contributor.orcidBuchhave, L. A. [0000-0003-1605-5666]-
dc.contributor.funderNational Aeronautics and Space Administration (NASA)-
dc.contributor.funderNational Science Foundation (NSF)-
dc.contributor.funderAgencia Estatal de Investigación (AEI)-
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