J/A+A/633/A44ivo://CDS.VizieR/J/A+A/633/A44doi:10.26093/cds/vizier.36330044CDSGrandjean A.Larange A.-M.Kepler M.Meunier N.Mignon L.Borgniet S.,Chauvin G.Desidera S.Galland F.Messina S.Sterzik M.Pantoja B.,Rodet L.Zicher N.2020-01-10T08:31:37Z2020-01-10T09:31:02ZCDS support team

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

cds-question@unistra.frsurveysearly-type-starslate-type-starsradial-velocityYoung nearby stars are good candidates in the search for planets with both radial velocity (RV) and direct imaging techniques. This, in turn, allows for the computation of the giant planet occurrence rates at all separations. The RV search around young stars is a challenge as they are generally faster rotators than older stars of similar spectral types and they exhibit signatures of magnetic activity (spots) or pulsation in their RV time series. Specific analyses are necessary to characterize, and possibly correct for, this activity. Our aim is to search for planets around young nearby stars and to estimate the giant planet (GP) occurrence rates for periods up to 1000 days. We used the HARPS spectrograph on the 3.6m telescope at La Silla Observatory to observe 89 A-M young (<600Myr) stars. We used our SAFIR (Spectroscopic data via Analysis of the Fourier Interspectrum Radial velocities) software to compute the RV and other spectroscopic observables. Then, we computed the companion occurrence rates on this sample. We confirm the binary nature of HD 177171, HD 181321 and HD 186704. We report the detection of a close low mass stellar companion for HIP 36985. No planetary companion was detected. We obtain upper limits on the GP (<13M_Jup_) and BD ({in}[13;80]M_Jup_) occurrence rates based on 83 young stars for periods less than 1000 days, which are set, 2_-2_^+3^ and 1_-1_^+3^%.2020A&A...633A..44Ghttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/633/A44CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/633/A44https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/633/A44http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/633/A44https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/633/A44https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/633/A44http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/633/A44GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/633/A44/sources (List of targets and positions)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/633/A44/sources?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/633/A44/sources?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/633/A44/sources?GETtext/xml+votable180.050000true1.468937222-41.7530683330.0055555555555555566/4190 4438 4444 12592 16393 16543 16853 16930 17274 17288 17541 17552 17607 17752 18802 20125 21748 22146 22773 23137 23140 23342 23774 24633 25015 25199 25793 27392 27395 28341 28737 30484 31104 32147 33312 33598 33850 34054 34074 34245 34342 34436 34683 34825 34829 35497 36664 36713 37175 37419 37616 38151 38765 38936 38950 39044 39693 39735 40717 40784 40811 42072 42147 42601 42910 43130 43150 43555 44088 45247 45538 45621 45746 45927 46383 46566 46923 46939 47101 47205 47287 47299 47598 47626 47910 48163 48274 48627 48651https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/633/A44?format=asciidefaultJ/A+A/633/A44/sourcesList of targets and positionsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameNamemeta.id;meta.maincharRAJ2000Right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Declination (J2000)pos.eq.dec;meta.mainSimbadSimbad column added by the CDSmeta.ref.urlcharJ/A+A/633/A44/tablea1Stellar characteristics of the surveyrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameNamemeta.id;meta.maincharHIP? Hipparcos numbermeta.idintnullableSpTypeSpectral typesrc.spTypecharB-VB-V colour indexmagphot.color;em.opt.B;em.opt.VfloatMass? Stellar mass found in literaturesolMassphys.massfloatnullabler_MassBibcode of mass referencemeta.refcharAge? Age found in literatureMyrtime.ageintnullablee_Age? Age negative errorMyrstat.error;time.ageintnullableE_Age? Age positive errorMyrstat.error;stat.maxintnullabler_AgeBibcode of age referencemeta.ref;pos.framecharvsiniRotational velocitykm/sphys.veloc.rotatfloatProt? Rotation period found in literaturedtime.periodfloatnullablee_Prot? Rotation period uncertaintydstat.errorfloatnullabler_ProtBibcode of rotation period referencemeta.ref;pos.framecharIRIR excess flag (1)meta.codecharr_IRBibcode of IR excess referencemeta.ref;pos.framecharDImaged disc flag (2)meta.codecharr_DBibcode of disc referencemeta.ref;pos.framecharJ/A+A/633/A44/tablea2Results of the surveyRV-BVScorr? RV-BVS correlation factorstat.correlationfloatnullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameNamemeta.id;meta.maincharHIP? Hipparcos numbermeta.idintnullableSpTypeSpectral typesrc.spTypecharTBLTime baselinedtime.epochintNspTotal number of computed spectrameta.numberintRVAmpRadial velocity amplitudem/ssrc.var.amplitudefloatRVrmsRadial velocity rmsm/sstat.errorfloate_RVRadial velocity mean uncertaintym/sstat.errorfloatBVS? Bisector velocity spanm/sphys.velocdoublenullableBVSrms? Bisector velocity span rmsm/sstat.errorfloatnullablee_BVS? Bisector velocity span mean uncertaintym/sstat.errorfloatnullable<FWHM>? FWHM mean uncertaintykm/sphys.angSizefloatnullable<logR'HK>? logR'HK mean uncertaintyphot.flux;arith.ratiofloatnullableVDominant source of RV (1)meta.codechar