J/ApJ/789/154ivo://CDS.VizieR/J/ApJ/789/154doi:10.26093/cds/vizier.17890154CDSDumusque X.Bonomo A.S.Haywood R.D.Malavolta L.Segransan D.,Buchhave L.A.Collier Cameron A.Latham D.W.Molinari E.Pepe F.,Udry S.Charbonneau D.Cosentino R.Dressing C.D.Figueira P.,Fiorenzano A.F.M.Gettel S.Harutyunyan A.Horne K.Lopez-Morales M.,Lovis C.Mayor M.Micela G.Motalebi F.Nascimbeni V.Phillips D.F.,Piotto G.Pollacco D.Queloz D.Rice K.Sasselov D.Sozzetti A.,Szentgyorgyi A.Watson C.2017-07-10T06:22:04Z2017-03-22T14:14:28ZCDS support team

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

cds-question@unistra.frmultiple-starssolar-system-planetsradial-velocityKepler-10b was the first rocky planet detected by the Kepler satellite and confirmed with radial velocity follow-up observations from Keck-HIRES. The mass of the planet was measured with a precision of around 30%, which was insufficient to constrain models of its internal structure and composition in detail. In addition to Kepler-10b, a second planet transiting the same star with a period of 45 days was statistically validated, but the radial velocities were only good enough to set an upper limit of 20 M_{Earth}_ for the mass of Kepler-10c. To improve the precision on the mass for planet b, the HARPS-N Collaboration decided to observe Kepler-10 intensively with the HARPS-N spectrograph on the Telescopio Nazionale Galileo on La Palma. In total, 148 high-quality radial-velocity measurements were obtained over two observing seasons. These new data allow us to improve the precision of the mass determination for Kepler-10b to 15%. With a mass of 3.33+/-0.49 M_{Earth}_and an updated radius of 1.47_-0.02_^+0.03^ R_{Earth}_, Kepler-10b has a density of 5.8+/-0.8 g/cm3, very close to the value predicted by models with the same internal structure and composition as the Earth. We were also able to determine a mass for the 45-day period planet Kepler-10c, with an even better precision of 11%. With a mass of 17.2+/-1.9 M_{Earth}_ and radius of 2.35_-0.04_^+0.09^ R_{Earth}_, Kepler-10c has a density of 7.1+/-1.0 g/cm3. Kepler-10c appears to be the first strong evidence of a class of more massive solid planets with longer orbital periods.2014ApJ...789..154Dhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/789/154CatalogResearchIsServedByTAP VizieR generic servicerelated-toV/133 : Kepler Input Catalog (Kepler Mission Team, 2009)J/ApJ/738/170 : False positive Kepler planet candidates (Morton+, 2011)J/A+A/555/A58 : New Kepler planetary candidates (Ofir+, 2013)J/A+A/583/A65 : Active Kepler stars differential rotation (Reinhold+, 2015)J/MNRAS/456/2636 : Kepler-10 chemical composition (Liu+, 2016)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/789/154https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/789/154http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/789/154https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/789/154https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/789/154http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/789/154GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapOpticaldefaultJ/ApJ/789/154/table1HARPS-N RV measurementse_FWHMError in FWHMkm/sstat.error;phys.angSizedoublerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintBJDBarycentric Julian Date; BJD-2400000dtime.epochdoubleRVelRadial velocitykm/sphys.veloc;pos.heliocentricdoublee_RVelError in RVelkm/sstat.error;spect.dopplerVelocdoubleFWHMLine Full-Width at Half-Maximumkm/sspect.line.widthdoublelogR'HKCalcium activity indexphot.flux;arith.ratiofloate_logR'HKError in logR'HKstat.errorfloatSNRSignal-to-Noise ratio at 550 nmstat.snrfloat