J/A+A/546/A27ivo://CDS.VizieR/J/A+A/546/A27doi:10.26093/cds/vizier.35460027CDSBonfils X.Gillon M.Udry S.Armstrong D.Bouchy F.Delfosse X.,Forveille T.Fumel A.Jehin E.Lendl M.Lovis C.Mayor M.,Mccormac J.Neves V.Pepe F.Perrier C.Pollaco D.Queloz D.,Santos N.C.2017-06-21T08:22:29Z2012-12-03T12:07:13ZCDS support team

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

cds-question@unistra.frmultiple-starssolar-system-planetsradial-velocityWe report on the discovery of GJ 3470b, a transiting hot Uranus of mass m_p_=14.0+/-1.8M_{earth}_, radius R_p_=4.2+/-0.6R_{earth}_ and period P=3.3371+/-0.0002-day. Its host star is a nearby (d=25.2+/-2.9pc) M1.5 dwarf of mass M_star_=0.54+/-0.07M_{sun}_ and radius R_star_=0.50+/-0.06R_{sun}_. The detection was made during a radial-velocity campaign with Harps that focused on the search for short-period planets orbiting M dwarfs. Once the planet was discovered and the transit-search window narrowed to about 10% of an orbital period, a photometric search started with Trappist and quickly detected the ingress of the planet. Additional observations with Trappist, EulerCam and Nites definitely confirmed the transiting nature of GJ3470b and allowed the determination of its true mass and radius. The star's visible or infrared brightness (Vmag=12.3, Kmag=8.0), together with a large eclipse depth D=0.57+/-0.05%, ranks GJ 3470 b among the most suitable planets for follow-up characterizations.2012A&A...546A..27Bhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/546/A27CatalogResearchIsServedByTAP VizieR generic servicerelated-toJ/A+A/469/L43 : Radial velocities of Gl 581 (Udry+, 2007)J/A+A/471/L51 : Hot Neptune GJ 436b Spitzer observations (Gillon+, 2007)J/A+A/474/293 : Radial velocities of GJ 674 (Bonfils+, 2007)J/A+A/475/1125 : Characterization of the hot Neptune GJ 436b (Demory+, 2007)J/A+A/493/645 : Gl 176 radial velocities (Forveille+, 2009)J/A+A/507/487 : GJ 581 radial velocity curve (Mayor+, 2009)J/A+A/511/A21 : Radial velocities of GJ876 planetary system (Correia+, 2010)J/A+A/526/A141 : Gl 676A and HIP 12961 velocity monitoring (Forveille+, 2011)J/A+A/528/A111 : GJ3634 radial velocity and 4.5um flux (Bonfils+, 2011)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/546/A27https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/546/A27http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/546/A27https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/546/A27https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/546/A27http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/546/A27GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapOpticaldefaultJ/A+A/546/A27/table3HARPS measured RV for GJ3470RVBarycentric radial velocitykm/sphys.veloc;pos.heliocentricfloate_RVRadial-velocity uncertaintykm/sstat.errorfloatrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintBJDBarycentric Julian datedtime.epochdoubleJ/A+A/546/A27/table4TRAPPIST photometry for GJ3470, night 1recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintBJDBarycentric Julian datedtime.epochdoubleFluxNormalized fluxphot.flux;arith.ratiofloate_FluxNormalized flux uncertaintystat.error;phot.fluxfloatJ/A+A/546/A27/table5TRAPPIST photometry for GJ3470, night 2recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintBJDBarycentric Julian datedtime.epochdoubleFluxNormalized fluxphot.flux;arith.ratiofloate_FluxNormalized flux uncertaintystat.error;phot.fluxfloatJ/A+A/546/A27/table6EulerCam photometry for GJ3470, night 2recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintBJDBarycentric Julian datedtime.epochdoubleFluxNormalized fluxphot.flux;arith.ratiofloate_FluxNormalized flux uncertaintystat.error;phot.fluxfloatJ/A+A/546/A27/table7NITES photometry for GJ3470, night 3recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintBJDBarycentric Julian datedtime.epochdoubleFluxNormalized fluxphot.flux;arith.ratiofloate_FluxNormalized flux uncertaintystat.error;phot.fluxfloat