J/MNRAS/399/287ivo://CDS.VizieR/J/MNRAS/399/287doi:10.26093/cds/vizier.73990287CDSSouthworth J.Hinse T.C.Burgdorf M.J.Dominik M.Hornstrup A.,Jorgensen U.G.Liebig C.Ricci D.Thone C.C.Anguita T.Bozza V.,Novati S.C.Harpsoe K.Mancini L.Masi G.Mathiasen M.Rahvar S.,Scarpetta G.Snodgrass C.Surdej J.Zub M.2024-07-09T20:15:58Z2009-11-04T11:57:13ZCDS support team

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

cds-question@unistra.frsolar-system-planetsphotometryWe present and analyse light curves of four transits of the Southern hemisphere extrasolar planetary system WASP-4, obtained with a telescope defocussed so the radius of each point spread function was 17 arcsec (44 pixels). This approach minimises both random and systematic errors, allowing us to achieve scatters of between 0.60 and 0.88mmag per observation over complete transit events. The light curves are augmented by published observations and analysed using the JKTEBOP code. The results of this process are combined with theoretical stellar model predictions to derive the physical properties of the WASP-4 system. WASP-4 is now one of the best-quantified transiting extrasolar planetary systems, and significant further progress requires improvements to our understanding of the physical properties of low-mass stars.2009MNRAS.399..287Shttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/399/287CatalogResearchIsServedByTAP VizieR generic servicerelated-toJ/MNRAS/396/1023 : Transiting planetary system WASP-5 (Southworth+, 2009)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/399/287https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/399/287http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/399/287https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/399/287https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/399/287http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/399/287GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapOpticaldefaultJ/MNRAS/399/287/wasp4Defocussed photometry of WASP-4 (table2)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintHJDHJD for the midpoint of observationdtime.epochdoubleRmagDifferential R-band magnitude of WASP-5magphot.mag;em.opt.Rdoublee_RmagMeasurement error of the R-band magnitudemagstat.error;phot.mag;em.opt.Rdouble