J/ApJ/759/19ivo://CDS.VizieR/J/ApJ/759/19doi:10.26093/cds/vizier.17590019CDSEndl M.Robertson P.Cochran W.D.MacQueen P.J.Brugamyer E.J.,Caldwell C.Wittenmyer R.A.Barnes S.I.Gullikson K.2017-06-29T08:55:23Z2014-08-13T14:47:46ZCDS support team

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

cds-question@unistra.frsolar-system-planetsradial-velocitymultiple-starsWe present a mass determination for the transiting super-Earth {rho}^1^ Cancri e based on nearly 700 precise radial velocity (RV) measurements. This extensive RV data set consists of data collected by the McDonald Observatory planet search and published data from Lick and Keck observatories. We obtained 212 RV measurements with the Tull Coud\'e Spectrograph at the Harlan J. Smith 2.7m Telescope and combined them with a new Doppler reduction of the 131 spectra that we have taken in 2003-2004 with the High-Resolution Spectrograph (HRS) at the Hobby-Eberly Telescope for the original discovery of {rho}^1^ Cancri e. Using this large data set we obtain a five-planet Keplerian orbital solution for the system and measure an RV semi-amplitude of K=6.29+/-0.21m/s for {rho}^1^ Cnc e and determine a mass of 8.37+/-0.38M_{oplus}_. The uncertainty in mass is thus less than 5%. This planet was previously found to transit its parent star, which allowed them to estimate its radius. Combined with the latest radius estimate from Gillon et al. (Cat. J/A+A/539/A28), we obtain a mean density of {rho}=4.50+/-0.20g/cm3. The location of {rho}^1^ Cnc e in the mass-radius diagram suggests that the planet contains a significant amount of volatiles, possibly a water-rich envelope surrounding a rocky core.2012ApJ...759...19Ehttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/759/19CatalogResearchIsServedByTAP VizieR generic servicerelated-toJ/ApJS/210/20 : Small Kepler planets radial velocities (Marcy+, 2014)J/ApJS/210/5 : The twenty-five year Lick planet search (Fischer+, 2014)J/A+A/545/A97 : 0.8-6{mu}m calibrated spectrum of 55 Cnc (Crossfield, 2012)J/A+A/539/A28 : New transit phot. for super-Earth 55 Cnc e (Gillon+, 2012)J/MNRAS/422/2024 : X-ray-age relation & exoplanet evaporation (Jackson+, 2012)J/ApJ/733/68 : Exoplanet masses derived from RVs (Brown+, 2011)J/AJ/142/176 : Exoplanet hosts. II. Speckle interferometry (Mason+, 2011)J/PASP/123/412 : Exoplanet Orbit Database (Wright+, 2011)J/A+A/533/A114 : Transit of super-Earth 55 Cnc e (Demory+, 2011)J/A+A/527/A140 : Mass limits on substellar companions (Reffert+, 2011)J/other/Sci/330.653 : Detected planets in the Eta-Earth Survey (Howard+, 2010)J/ApJ/725/2349 : C/O vs Mg/Si of planetary systems (Delgado Mena+, 2010)J/ApJ/709/168 : Eccentric orbits in exoplanets (Anglada-Escude+, 2010)J/ApJ/705/1226 : Planet-bearing stars in Spitzer (Bryden+, 2009)J/ApJ/694/1085 : Radii of exoplanet host stars (van Belle+, 2009)J/ApJ/693/1084 : Ten new and updated multiplanet systems (Wright+, 2009)J/ApJ/680/728 : Diameters of exoplanet host stars (Baines+, 2008)J/ApJ/649/1010 : Habitability of known exoplanetary systems (Jones+, 2006)J/ApJ/646/505 : Catalog of nearby exoplanets (Butler+, 2006)J/ApJ/622/1102 : The planet-metallicity correlation. (Fischer+, 2005)J/A+A/414/351 : ELODIE survey for northern exoplanets III (Naef+, 2004)J/ApJ/612/511 : Exoplanet radio emission (Lazio+, 2004)J/ApJ/582/1123 : Search for transiting exoplanets (Mallen-Ornelas+, 2003)J/A+A/398/363 : Statistical properties of exoplanets II (Santos+, 2003)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/759/19https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/759/19http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/759/19https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/759/19https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/759/19http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/759/19GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapOpticaldefaultJ/ApJ/759/19/table1Precise radial velocity resultsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintBJDBarycentric Julian Date; (BJD-2400000)dtime.epochdoubleRVel[-22682.7/28445.6] Differential radial velocitym/sphys.veloc;pos.heliocentricdoublee_RVel[1/11.8] Error in RVelm/sstat.error;spect.dopplerVelocfloatTelTelescope/Spectrograph combination used (1)instr.setupcharJ/ApJ/759/19/table3*Keplerian orbital solutionse_a? a uncertaintyAUstat.errorfloatnullablePlPlanet designationmeta.id;meta.maincharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintPerPerioddtime.perioddoublee_PerPeriod uncertaintydstat.errordoubleKSemi-amplitude Km/sphys.veloc;src.orbitalfloate_KK uncertaintym/sstat.errorfloateOrbit eccentricitysrc.orbital.eccentricityfloatf_e[f] value set to e=0 (1)meta.codechare_e? e uncertaintystat.errorfloatnullableomega[0/360] Planet's longitude of periastron {omega}degsrc.orbital.periastronintf_omega[f] value of omega fixedmeta.codechare_omega? omega uncertaintydegstat.errorintnullableT0? Barycentric Julian Date of periastron passage (BJD-2400000)dsrc.orbital.periastronfloatnullablee_T0? Tper uncertaintydstat.errorfloatnullableMsini? Minimum mass in Jupiter masses(1.898187x10+27kg)phys.massfloatnullablee_Msini? Msini uncertainty(1.898187x10+27kg)stat.errorfloatnullablea? Planet's orbital radiusAUphys.size.radiusfloatnullableSimbadSimbad column added by the CDSmeta.ref.urlchar