J/AJ/163/175ivo://CDS.VizieR/J/AJ/163/175doi:10.26093/cds/vizier.51630175CDSWong I.Shporer A.Vissapragada S.Greklek-McKeon M.Knutson H.A.,Winn J.N.Benneke B.2022-09-05T14:23:00Z2022-05-13T07:23:14ZCDS support team

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

cds-question@unistra.frmultiple-starsexoplanetsvisible-astronomynarrow-band-photometryAfter observing WASP-12 in the second year of the primary mission, the Transiting Exoplanet Survey Satellite (TESS) revisited the system in late 2021 during its extended mission. In this paper, we incorporate the new TESS photometry into a reanalysis of the transits, secondary eclipses, and phase curve. We also present a new Ks-band occultation observation of WASP-12b obtained with the Palomar/Wide-field Infrared Camera instrument. The latest TESS photometry spans three consecutive months, quadrupling the total length of the TESS WASP-12 light curve and extending the overall time baseline by almost two years. Based on the full set of available transit and occultation timings, we find that the orbital period is shrinking at a rate of -29.81{+/-}0.94ms/yr. The additional data also increase the measurement precision of the transit depth, orbital parameters, and phase-curve amplitudes. We obtain a secondary eclipse depth of 466{+/-}35ppm, a 2{sigma} upper limit on the nightside brightness of 70 ppm, and a marginal 6.2{+/-}2.8deg eastward offset between the dayside hotspot and the substellar point. The voluminous TESS data set allows us to assess the level of atmospheric variability on timescales of days, months, and years. We do not detect any statistically significant modulations in the secondary eclipse depth or day-night brightness contrast. Likewise, our measured Ks-band occultation depth of 2810{+/-}390ppm is consistent with most ~2.2{mu}m observations in the literature.2022AJ....163..175Whttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/163/175CatalogResearchIsServedByTAP VizieR generic servicerelated-toIV/38 : TESS Input Catalog - v8.0 (TIC-8) (Stassun+, 2019)J/ApJ/720/872 : A spectropolarimetric analysis of WASP-12 (Fossati+, 2010)J/ApJ/727/125 : Two secondary eclipses of WASP-12b with Spitzer (Campo+, 2011)J/AJ/141/179 : Transits of TrES-4b, HAT-P-3b and WASP-12b (Chan+, 2011)J/A+A/551/A108 : Multi-site obs. of WASP-12 b transit (Maciejewski+, 2013)J/A+A/588/L6 : WASP-12 transit light curves (Maciejewski+ 2016)J/A+A/600/A30 : Limb-darkening for TESS satellite (Claret, 2017)J/AJ/154/4 : Times of transits and occultations of WASP-12b (Patra+, 2017)J/AcA/68/371 : WASP and KELT planet transits (Maciejewski+, 2018)J/AJ/155/165 : Dissipation exoplanet hosts from tidal spin-up (Penev+, 2018)J/AJ/158/190 : Main seq. hot Jupiter host with good astrometry (Hamer+, 2019)J/A+A/628/A115 : WASP-12, CoRoT-1 and TrES-3 light curves (von Essen+, 2019)J/AcA/70/1 : WASP-18 Photometric timeseries & timedata (Maciejewski+, 2020)J/AJ/159/150 : Transit times of 11 hot Jupiters (Patra+, 2020)J/AJ/160/155 : Light curve segments of 22 host stars with TESS (Wong+, 2020)J/ApJ/888/L5 : Transits, occultation times and RVs of WASP-12b (Yee+, 2020)J/AJ/161/72 : 180 Transit and occultation times for WASP-12b (Turner+, 2021)J/AJ/162/127 : Lightcurve from 2nd year TESS primary mission (Wong+, 2021)J/A+A/657/A52 : CHEOPS transit light curves of WASP-103 b (Barros+, 2022)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/163/175https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/163/175http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/163/175https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/163/175https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/163/175http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/163/175GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapOpticaldefaultJ/AJ/163/175/tablea1Results of individual transit fitsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameTransit numbermeta.id;meta.maincharBJD[2458844/2459551] Mid-transit time, BJD_TDB_dtime.epochdoublee_BJDThe 1-sigma uncertainty in BJDdstat.errordoubleRpRs[0.11/0.12] Planet-star radius ratiophys.size.radius;arith.ratiofloate_RpRs[0.001/0.004] The 1-sigma uncertainty in RpRsstat.errorfloatb[0.12/0.52] Impact parametersrc.impactParamfloate_b[0.12/0.29] The 1-sigma uncertainty in bstat.errorfloataRs[2.75/3.24] Scaled orbital semimajor axisphys.angSize.smajAxis;src.orbitalfloate_aRs[0.06/0.29] The 1-sigma uncertainty in aRsstat.errorfloat