J/A+A/550/A54ivo://CDS.VizieR/J/A+A/550/A54doi:10.26093/cds/vizier.35500054CDSde Mooij E.J.W.Brogi M.De Kok R.J.Snellen I.A.G.Kenworthy M.A.,Karjalainen R.2017-06-19T07:57:35Z2013-05-10T07:43:51ZCDS support team

CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France

cds-question@unistra.frmultiple-starssolar-system-planetsinfrared-photometryIn recent years, day-side emission from about a dozen hot Jupiters has been detected through ground-based secondary eclipse observations in the near-infrared. These near-infrared observations are vital for determining the energy budgets of hot Jupiters, since they probe the planet-spectral energy distribution near its peak. The aim of this work is to measure the Ks -band secondary eclipse depth of WASP-33b, the first planet discovered to transit an A-type star. This planet receives the highest level of irradiation of all transiting planets discovered to date. Furthermore, its host-star shows pulsations and is classified as a low-amplitude delta-Scuti. As part of our GROUnd-based Secondary Eclipse (GROUSE) project we have obtained observations of two separate secondary eclipses of WASP-33b in the Ks-band using the LIRIS instrument on the William Herschel Telescope (WHT). The telescope was significantly defocused to avoid saturation of the detector for this bright star (K~7.5). To increase the stability and the cadence of the observations, they were performed in staring mode. We collected a total of 5100 and 6900 frames for the first and the second night respectively, both with an average cadence of 3.3 seconds. On the second night the eclipse is detected at the 12-sigma level, with a measured eclipse depth of 0.244_-020_^+0.027^%. This eclipse depth corresponds to a brightness temperature of 3270_-160^+115^K. The measured brightness temperature on the second night is consistent with the expected equilibrium temperature for a planet with a very low albedo and a rapid re-radiation of the absorbed stellar light. For the other night the short out-of-eclipse baseline prevents good corrections for the stellar pulsations and systematic effects, which makes this dataset unreliable for eclipse depth measurements. This demonstrates the need of getting a sufficient out-of-eclipse baseline.2013A&A...550A..54Dhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/550/A54CatalogResearchIsServedByTAP VizieR generic servicerelated-toJ/MNRAS/408/1680 : Transiting planetary system WASP-2 (Southworth+, 2010)J/ApJ/715/421 : Relative photometry of WASP-3 (Tripathi+, 2010)J/MNRAS/399/287 : Transiting planetary system WASP-4 (Southworth+, 2009)J/AJ/137/3826 : Two transits of the giant planet WASP-4b (Winn+, 2009)J/A+A/530/A5 : WASP-4b thermal emission Ks-band detection (Caceres+, 2011)J/A+A/539/A159 : WASP-4b transit griz light curves (Nikolov+, 2012)J/MNRAS/396/1023 : Transiting planetary system WASP-5 (Southworth+, 2009)J/A+A/501/785 : Discovery and characterization of WASP-6b (Gillon+, 2009)J/A+A/527/A8 : Transiting planetary system WASP-7 (Southworth+, 2011)J/A+A/517/L1 : Radial velocities of WASP-8b planet (Queloz+, 2010)J/ApJ/692/L100 : Relative photometry of WASP-10 (Johnson+, 2009)J/A+A/535/A7 : Transit light curves of WASP-10 b (Maciejewski+, 2011)J/ApJ/720/872 : A spectropolarimetric analysis of WASP-12 (Fossati+, 2010)J/A+A/528/A65 : WASP-12b transits (Maciejewski+, 2011)J/AJ/141/179 : Transits of TrES-4b, HAT-P-3b and WASP-12b (Chan+, 2011)J/A+A/502/391 : WASP-13b photometry and radial velocities (Skillen+, 2009)J/ApJ/709/159 : Relative Ic photometry of WASP-17 (Anderson+, 2010)J/ApJ/707/167 : Transiting planetary system WASP-18 (Southworth+, 2009)J/A+A/513/L3 : WASP-19b H-band thermal emission (Anderson+, 2010)J/A+A/519/A98 : Transit of exoplanet WASP-21b (Bouchy+, 2010)J/A+A/534/A16 : WASP-22 & WASP-26 photometry & velocities (Anderson+, 2011)J/A+A/531/A24 : WASP-23 photometric and radial velocity data (Triaud+, 2011)J/A+A/520/A56 : WASP-26b RV and photometric data (Smalley+, 2010)J/ApJ/726/L19 : Gunn r photometry of WASP-30 (Anderson+, 2011)J/A+A/531/A60 : WASP-31b photometry and radial velocities (Anderson+, 2011)J/A+A/526/A130 : WASP-34b photometry and radial velocities (Smalley+, 2011)J/A+A/525/A54 : Transits of WASP-38b (Barros+, 2011)J/A+A/531/A40 : Transits of WASP-39b (Faedi+, 2011)J/A+A/542/A4 : WASP-43b thirty eclipses (Gillon+, 2012)J/A+A/544/A72 : WASP-42 and WASP-49 photometry and velocities (Lendl+, 2012)J/A+A/533/A88 : WASP-50b photometry and radial velocities (Gillon+, 2011)J/A+A/547/A61 : WASP78 and WASP79 RV and photometric data (Smalley+, 2012)J/A+A/526/L10 : Transits of WASP-33 (Herrero+, 2011)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/550/A54https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/550/A54http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/550/A54https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/550/A54https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/550/A54http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/550/A54GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapInfrareddefaultJ/A+A/550/A54/aug2010Lightcurves for the night of 2010-08-18recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintHJDHeliocentric Julian Date of observationdtime.epochdoubleNFluxNormalised fluxphot.fluxdoublee_NFluxUncertainty on NFluxstat.errordoubleXCShift in X-centroidphys.atmol.lineShiftdoubleAirMAirmassobs.airMassfloatSkySky backgroundmeta.notedoubleJ/A+A/550/A54/sep2010Lightcurves for the night of 2010-09-20recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintHJDHeliocentric Julian Date of observationdtime.epochdoubleNFluxNormalised fluxphot.fluxdoublee_NFluxUncertainty on NFluxstat.errordoubleXCShift in X-centroidphys.atmol.lineShiftdoubleAirMAirmassobs.airMassfloatSkySky backgroundmeta.notedouble