J/ApJ/689/L149ivo://CDS.VizieR/J/ApJ/689/L149doi:10.26093/cds/vizier.16899149CDSCoughlin J.L.Stringfellow G.S.Becker A.C.Lopez-Morales M.,Mezzalira F.Krajci T.2011-02-18T16:40:26Z2011-02-01T14:58:30ZCDS support team

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

cds-question@unistra.frsolar-system-planetsstellar-radiivariable-starsWe present ground-based observations of the transiting Neptune-mass planet Gl 436b obtained with the 3.5m telescope at Apache Point Observatory and other supporting telescopes. Included in this is an observed transit in early 2005, over 2 years before the earliest reported transit detection. We have compiled all available transit data to date and perform a uniform modeling using the JKTEBOP code. We do not detect any transit timing variations of amplitude greater than ~1 minute over the ~3.3 year baseline. We do however find possible evidence for a self-consistent trend of increasing orbital inclination, transit width, and transit depth, which supports the supposition that Gl 436b is being perturbed by another planet of <~12M_{earth}_ in a nonresonant orbit.2008ApJ...689L.149Chttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/689/L149CatalogResearchIsServedByTAP VizieR generic servicerelated-toJ/A+A/471/L51 : Spitzer observations of the hot Neptune GJ 436b (Gillon+,J/A+A/475/1125 : Characterization of the hot Neptune GJ 436b (Demory+, 2007)J/A+A/507/481 : GJ 436b and XO-1b transits (Caceres+, 2009)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/689/L149https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/689/L149http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/689/L149https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/689/L149https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/689/L149http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/689/L149GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapdefaultJ/ApJ/689/L149/table1Parameters derived from using the JKTEBOP code with 1{sigma} errorsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintModModel type (1)meta.notecharE? Epoch of observation (2)meta.number;time.periodintnullableFiltFilter (8um, B, H, I, R, V, None); Johnson-Cousins systemmeta.notechart0? HJD-2450000 (Heliocentric Julian Date) of minimumddoublenullablee_t0? 1{sigma} uncertainty in Tmindstat.errordoublenullableiOrbital inclinationdegsrc.orbital.inclinationfloate_i1{sigma} uncertainty in idegstat.errorfloatR*Stellar radius (in solar radius)solRadphys.size.radiusfloate_R*1{sigma} uncertainty in R*solRadstat.errorfloatRpPlanetary radius in Earth radii (6371km)phys.size.radiusfloate_Rp1{sigma} uncertainty in Rpstat.errorfloatDepthDepth of eclipsemagsrc.var.amplitudedoublee_Depth1{sigma} uncertainty in Depthmagstat.error;phys.absorption.opticalDepthdoubleWidthWidth of eclipsemintime.intervalfloate_Width1{sigma} uncertainty in Widthminstat.error;spect.line.widthfloatSourceSource of Data (telescope or author)meta.ref;pos.framecharf_Source[ab] Precision on source (3)meta.codecharBibCodeBibcode of author if releventmeta.bib.bibcodechar