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Thermal emission at 3.6-8 μm from WASP-19b: a hot Jupiter without a stratosphere orbiting an active star

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dc.contributor.authorAnderson, D. R.
dc.contributor.authorSmith, Alexis Michael Sheridan
dc.contributor.authorMadhusudhan, N.
dc.contributor.authorWheatley, P. J.
dc.contributor.authorCameron, Andrew Collier
dc.contributor.authorHellier, C.
dc.contributor.authorCampo, C.
dc.contributor.authorGillon, M.
dc.contributor.authorHarrington, J.
dc.contributor.authorMaxted, P. F. L.
dc.contributor.authorPollacco, D.
dc.contributor.authorQueloz, D.
dc.contributor.authorSmalley, B.
dc.contributor.authorTriaud, A. H. M. J.
dc.contributor.authorWest, R. G.
dc.date.accessioned2016-02-05T10:10:16Z
dc.date.available2016-02-05T10:10:16Z
dc.date.issued2013-04-21
dc.identifier240447097
dc.identifier946bce68-acf2-4c8e-9cdc-b85005b3ec15
dc.identifier84876808612
dc.identifier.citationAnderson , D R , Smith , A M S , Madhusudhan , N , Wheatley , P J , Cameron , A C , Hellier , C , Campo , C , Gillon , M , Harrington , J , Maxted , P F L , Pollacco , D , Queloz , D , Smalley , B , Triaud , A H M J & West , R G 2013 , ' Thermal emission at 3.6-8 μm from WASP-19b: a hot Jupiter without a stratosphere orbiting an active star ' , Monthly Notices of the Royal Astronomical Society , vol. 430 , no. 4 , pp. 3422-3431 . https://doi.org/10.1093/mnras/stt140en
dc.identifier.issn0035-8711
dc.identifier.otherBibCode: 2013MNRAS.430.3422A
dc.identifier.otherORCID: /0000-0002-8863-7828/work/58531341
dc.identifier.urihttps://hdl.handle.net/10023/8138
dc.description.abstractWe report detection of thermal emission from the exoplanet WASP-19b at 3.6, 4.5, 5.8 and 8.0 μm. We used the InfraRed Array Camera on the Spitzer Space Telescope to observe two occultations of WASP-19b by its host star. We combine our new detections with previous measurements of WASP-19b's emission at 1.6 and 2.09 μm to construct a spectral energy distribution of the planet's dayside atmosphere. By comparing this with model-atmosphere spectra, we find that the dayside atmosphere of WASP-19b lacks a strong temperature inversion. As WASP-19 is an active star (log R'HK = -4.50 ± 0.03), this finding supports the hypothesis of Knutson, Howard and Isaacson that inversions are suppressed in hot Jupiters orbiting active stars. The available data are unable to differentiate between a carbon-rich and an oxygen-rich atmosphere.
dc.format.extent1019444
dc.language.isoeng
dc.relation.ispartofMonthly Notices of the Royal Astronomical Societyen
dc.subjectMethods: data analysisen
dc.subjectTechniques: photometricen
dc.subjectOccultationsen
dc.subjectPlanets and satellites: atmospheresen
dc.subjectPlanets and satellites: individual: WASP-19ben
dc.subjectStars: individual: WASP-19en
dc.subjectQB Astronomyen
dc.subjectQC Physicsen
dc.subject.lccQBen
dc.subject.lccQCen
dc.titleThermal emission at 3.6-8 μm from WASP-19b: a hot Jupiter without a stratosphere orbiting an active staren
dc.typeJournal articleen
dc.contributor.sponsorScience & Technology Facilities Councilen
dc.contributor.sponsorScience & Technology Facilities Councilen
dc.contributor.institutionUniversity of St Andrews. School of Physics and Astronomyen
dc.identifier.doi10.1093/mnras/stt140
dc.description.statusPeer revieweden
dc.identifier.urlhttp://adsabs.harvard.edu/abs/2013MNRAS.430.3422Aen
dc.identifier.grantnumberST/J001651/1en
dc.identifier.grantnumberPP/F000065/1en


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