J/A+A/654/A104ivo://CDS.VizieR/J/A+A/654/A104doi:10.26093/cds/vizier.36540104CDSUnger N.Segransan D.Queloz D.Udry S.Lovis C.Mordasini C.,Ahrer E.Benz W.Bouchy F.Delisle J.-B.Diaz R.F.Dumusque X.,Lo Curto G.Marmier M.Mayor M.Pepe F.Santos N.C.Stalport M.,Alonso R.Collier Cameron A.Deleuil M.Figueira P.Gillon M.,Moutou C.Pollacco D.Pompei E.2022-09-21T08:09:38Z2021-10-18T12:25:08ZCDS support team

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

cds-question@unistra.frmultiple-starsexoplanetsradial-velocityvisible-astronomyWe present precise radial-velocity measurements of five solar-type stars observed with the HARPS Echelle spectrograph mounted on the 3.6-m telescope in La Silla (ESO, Chile). With a time span of more than 10 years and a fairly dense sampling, the survey is sensitive to low mass planets down to super-Earths on orbital periods up to 100 days. Our goal was to search for planetary companions around the stars HD39194, HD93385, HD96700, HD154088, and HD189567 and use Bayesian model comparison to make an informed choice on the number of planets present in the systems based on the radial velocity observations. These findings will contribute to the pool of known exoplanets and better constrain their orbital parameters. A first analysis was performed using the DACE (Data & Analysis Center for Exoplanets) online tools to assess the activity level of the star and the potential planetary content of each system. We then used Bayesian model comparison on all targets to get a robust estimate of the number of planets per star. We did this using the nested sampling algorithm PolyChord. For some targets, we also compared different noise models to disentangle planetary signatures from stellar activity. Lastly, we ran an efficient MCMC (Markov chain Monte Carlo) algorithm for each target to get reliable estimates for the planets' orbital parameters. We identify 12 planets within several multiplanet systems. These planets are all in the super-Earth and sub-Neptune mass regime with minimum masses ranging between 4 and 13 M_{Earth}_ and orbital periods between 5 and 103 days. Three of these planets are new, namely HD 93385 b, HD 96700 c, and HD 189567 c.2021A&A...654A.104Uhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/654/A104CatalogResearchIsServedByTAP VizieR generic servicerelated-toJ/A+A/469/L43 : Radial velocities of Gl 581 (Udry+, 2007)J/A+A/474/293 : Radial velocities of GJ 674 (Bonfils+, 2007)J/A+A/493/639 : Velocity curves of HD 40307 (Mayor+, 2009)J/A+A/493/645 : Gl 176 radial velocities (Forveille+, 2009)J/A+A/496/513 : RV of 6 stars with long-period giant planets (Moutou+, 2009)J/A+A/496/521 : Radial velocities of HD45364 (Correia+, 2009)J/A+A/496/527 : HD 47186 & HD 181433 radial velocity curves (Bouchy+, 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/512/A46 : Radial velocities of BD-08 2823 (Hebrard+, 2010)J/A+A/512/A47 : 3 stars with giant planets radial velocities (Santos+ 2010)J/A+A/512/A48 : HD125612, HD215497, HIP5158 HARPS RV curves (Lo Curto+ 2010)J/A+A/523/A15 : HARPS XXIII: RV data for the 8 targets (Naef+, 2010)J/A+A/526/A111 : HD 85390, 90156, 103197 radial velocity (Mordasini+, 2011)J/A+A/526/A112 : Radial velocities of HARPS metal-poor sample (Santos+, 2011)J/A+A/526/A141 : Gl 676A and HIP 12961 velocity monitoring (Forveille+ 2011)J/A+A/527/A63 : 7 new HARPS planetary systems RV (Moutou+, 2011)J/A+A/528/A112 : Radial velocities of HD 10180 (Lovis+, 2011)J/A+A/551/A59 : HD103774, HD109271 and BD-061339 RV curves (Lo Curto+, 2013)J/A+A/556/A110 : HARPS radial velocities of GJ 163 (Bonfils+, 2013)J/A+A/566/A35 : Radial velocities of HD 41248 (Santos+, 2014)J/A+A/575/A119 : 3 HARPS M dwarfs RV and stellar activityJ/A+A/576/A48 : Radial velocity monitoring for 6 stars (Moutou+, 2015)J/A+A/585/A134 : HD1461, HD40307 and HD204313 radial velocities (Diaz+, 2016)J/A+A/614/A133 : Radial velocities of HD215152 (Delisle+, 2018)J/MNRAS/503/1248 : HD 13808 HARPS radial velocities (Ahrer+, 2021)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/654/A104https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/654/A104http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/654/A104https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/654/A104https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/654/A104http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/654/A104GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapOpticaldefaultJ/A+A/654/A104/hd39194HARPS measurements of HD39194recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintBJDBarycentric Julian Date of observation (BJD-2450000)dtime.epochdoubleRVRadial velocitym/sphys.veloc;pos.heliocentricdoublee_RVRadial velocity uncertaintym/sstat.errorfloatFWHMFull width at half-maximum of the CCFkm/sspect.line.widthdoubleBISBisector velocity span of the cross-correlation function (CCF)m/sphys.velocdoublelogRHKActivity indicator based on CaII HKphot.flux;arith.ratiofloate_logRHKUncertainty in the log(R'HK) measurementstat.errorfloatInstInstrument (HARPS03 or HARPS15)meta.id;instrcharJ/A+A/654/A104/hd93385HARPS measurements of HD93385recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintBJDBarycentric Julian Date of observation (BJD-2450000)dtime.epochdoubleRVRadial velocitym/sphys.veloc;pos.heliocentricdoublee_RVRadial velocity uncertaintym/sstat.errorfloatFWHMFull width at half-maximum of the CCFkm/sspect.line.widthdoubleBISBisector velocity span of the cross-correlation function (CCF)m/sphys.velocdoublelogRHKActivity indicator based on CaII HKphot.flux;arith.ratiofloate_logRHKUncertainty in the log(R'HK) measurementstat.errorfloatInstInstrument (HARPS03 or HARPS15)meta.id;instrcharJ/A+A/654/A104/hd96700HARPS measurements of HD96700recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintBJDBarycentric Julian Date of observation (BJD-2450000)dtime.epochdoubleRVRadial velocitym/sphys.veloc;pos.heliocentricdoublee_RVRadial velocity uncertaintym/sstat.errorfloatFWHMFull width at half-maximum of the CCFkm/sspect.line.widthdoubleBISBisector velocity span of the cross-correlation function (CCF)m/sphys.velocdoublelogRHKActivity indicator based on CaII HKphot.flux;arith.ratiofloate_logRHKUncertainty in the log(R'HK) measurementstat.errorfloatInstInstrument (HARPS03 or HARPS15)meta.id;instrcharJ/A+A/654/A104/hd154088HARPS measurements of HD154088recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintBJDBarycentric Julian Date of observation (BJD-2450000)dtime.epochdoubleRVRadial velocitym/sphys.veloc;pos.heliocentricdoublee_RVRadial velocity uncertaintym/sstat.errorfloatFWHMFull width at half-maximum of the CCFkm/sspect.line.widthdoubleBISBisector velocity span of the cross-correlation function (CCF)m/sphys.velocdoublelogRHKActivity indicator based on CaII HKphot.flux;arith.ratiofloate_logRHKUncertainty in the log(R'HK) measurementstat.errorfloatInstInstrument (HARPS03 or HARPS15)meta.id;instrcharJ/A+A/654/A104/hd189567HARPS measurements of HD189567FWHMFull width at half-maximum of the CCFkm/sspect.line.widthdoubleBISBisector velocity span of the cross-correlation function (CCF)m/sphys.velocdoublelogRHKActivity indicator based on CaII HKphot.flux;arith.ratiofloate_logRHKUncertainty in the log(R'HK) measurementstat.errorfloatInstInstrument (HARPS03 or HARPS15)meta.id;instrcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintBJDBarycentric Julian Date of observation (BJD-2450000)dtime.epochdoubleRVRadial velocitym/sphys.veloc;pos.heliocentricdoublee_RVRadial velocity uncertaintym/sstat.errorfloat