J/A+A/577/A54ivo://CDS.VizieR/J/A+A/577/A54doi:10.26093/cds/vizier.35770054CDSCiceri S.Mancini L.Southworth J.Bruni I.Nikolov N.D'Ago G.,Schroeder T.Bozza V.Tregloan-Reed J.Henning T.2017-06-13T11:08:28Z2015-05-04T07:17:10ZCDS support team

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

cds-question@unistra.frmultiple-starssolar-system-planetsphotometryAccurate and repeated photometric follow-up observations of planetary transit events are important to precisely characterize the physical properties of exoplanets. A good knowledge of the main characteristics of the exoplanets is fundamental in order to trace their origin and evolution. Multi-band photometric observations play an important role in this process. By using new photometric data, we computed precise estimates of the physical properties of two transiting planetary systems at equilibrium temperatures of ~2000K. We present new broadband, multi-colour photometric observations obtained using three small class telescopes and the telescope-defocussing technique. In particular we obtained 11 and 10 light curves covering 8 and 7 transits of HAT-P-23 and WASP-48, respectively. For each of the two targets, one transit event was simultaneously observed through four optical filters. One transit of WASP-48 b was monitored with two telescopes from the same observatory. The physical parameters of the systems were obtained by fitting the transit light curves with jktebop and from published spectroscopic measurements.2015A&A...577A..54Chttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/577/A54CatalogResearchIsServedByTAP VizieR generic servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/577/A54https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/577/A54http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/577/A54https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/577/A54https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/577/A54http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/577/A54GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapOpticaldefaultJ/A+A/577/A54/wasp48WASP-48 Calar Alto, Loiano and BUSCA light curvesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintObsObservation code (1)meta.codecharBJDBarycentric Julain date (BJD-2400000)dtime.epochdoubleDmagRelative magnitudemagphot.mag;arith.diffdoublee_DmagError relative to the relative magnitudemagstat.error;phot.mag;arith.diffdoubleJ/A+A/577/A54/hatp23HAT-P-23 Calar Alto and BUSCA light curvesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintObsObservation code (1)meta.codecharBJDBarycentric Julain date (BJD-2400000)dtime.epochdoubleDmagRelative magnitudemagphot.mag;arith.diffdoublee_DmagError relative to the relative magnitudemagstat.error;phot.mag;arith.diffdouble