J/AJ/152/167ivo://CDS.VizieR/J/AJ/152/167doi:10.26093/cds/vizier.51520167CDSTeske J.K.Shectman S.A.Vogt S.S.Diaz M.Butler R.P.Crane J.D.,Thompson I.B.Arriagada P.2017-06-19T07:57:29Z2017-05-05T12:15:46ZCDS support team

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

cds-question@unistra.frmultiple-starssolar-system-planetsradial-velocityline-intensitieschemical-abundancesWe present a new precision radial velocity (RV) data set that reveals multiple planets orbiting the stars in the ~360 au, G2+G2 "twin" binary HD133131AB. Our six years of high-resolution echelle observations from MIKE and five years from the Planet Finder Spectrograph (PFS) on the Magellan telescopes indicate the presence of two eccentric planets around HD133131A with minimum masses of 1.43+/-0.03 and 0.63+/-0.15M_J_ at 1.44+/-0.005 and 4.79+/-0.92au, respectively. Additional PFS observations of HD133131B spanning five years indicate the presence of one eccentric planet of minimum mass 2.50+/-0.05M_J_ at 6.40+/-0.59au, making it one of the longest-period planets detected with RV to date. These planets are the first to be reported primarily based on data taken with the PFS on Magellan, demonstrating the instrument's precision and the advantage of long-baseline RV observations. We perform a differential analysis between the Sun and each star, and between the stars themselves, to derive stellar parameters and measure a suite of 21 abundances across a wide range of condensation temperatures. The host stars are old (likely ~9.5Gyr) and metal-poor ([Fe/H]~-0.30), and we detect a ~0.03dex depletion in refractory elements in HD133131A versus B (with standard errors ~0.017). This detection and analysis adds to a small but growing sample of binary "twin" exoplanet host stars with precise abundances measured, and represents the most metal-poor and likely oldest in that sample. Overall, the planets around HD133131A and B fall in an unexpected regime in planet mass-host star metallicity space and will serve as an important benchmark for the study of long-period giant planets.2016AJ....152..167Thttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/152/167CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toIII/159 : Ca II H and K Measurements Made at MWO (Duncan+ 1991)J/ApJ/819/19 : Equivalent widths of WASP-94A and WASP-94B (Teske+, 2016)J/ApJ/801/L10 : XO-2N and XO-2S equivalent widths (Teske+, 2015)J/ApJ/734/70 : Chromospheric activity of Southern stars (Arriagada, 2011)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/152/167https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/152/167http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/152/167https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/152/167https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/152/167http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/152/167GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/AJ/152/167/stars (Stars observed)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/152/167/stars?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/152/167/stars?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/152/167/stars?GETtext/xml+votable180.050000true225.8976875-27.842550.0055555555555555566/44228https://cdsarc.cds.unistra.fr/viz-bin/moc/J/AJ/152/167?format=asciiOpticaldefaultJ/AJ/152/167/starsStars observedrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameName of the systemmeta.id;pos.framecharm_NameMultiplicity on the system (A or B)meta.code.multipcharPer1Best-fit period (1)dtime.period;meta.modelledintPer2? High eccentricity best-fit period for planet c around HD133131A (2)dsrc.orbital.eccentricity;meta.modelledintnullablePer3? Low eccentricity best-fit period for planet c around HD133131A (2)dsrc.orbital.eccentricity;meta.modelledintnullableNrvNumber of radial velocity measurements (tables 1-3)meta.numberintnullableEWEquivalent widths (table7)meta.ref.urlchar[X/H]Abundances (table8)meta.ref.urlcharSimbadSimbad column added by the CDSmeta.ref.urlchar_RAPosition from SIMBAD database (right ascension part)degpos.eq.ra;meta.main_DEPosition from SIMBAD database (declination part)degpos.eq.dec;meta.mainJ/AJ/152/167/velocitiesRadial velocities: MIKE for HD133131A (table1), PFS for HD133131A (table2), and PFS for HD133131B (table3)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameSystem name (HD 133131)meta.id;meta.maincharm_NameMultiplicity on the system (A or B)meta.code.multipcharInstInstrument: Magellan Inamori Kyocera Echelle (MIKE) echelle spectrograph, or Planet Finder Spectrograph (PFS)meta.id;instrcharJDJulian Datedtime.epochdoubleRV[-45.8/63.2] Radial velocitym/sphys.veloc;pos.heliocentricfloate_RV[1/10] Uncertainty in RVm/sstat.errorfloatS[0.131/0.3851]? S-index (1)phot.flux;arith.ratiofloatnullableJ/AJ/152/167/table8Derived stellar abundancesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSpeciesSpeciesmeta.notecharf_Species[ab] Flag on Species (a or b) (1)meta.codecharTc[40/1741] Condensation temperatureKphys.temperatureintA-Vesta[-0.476/-0.242] {Delta}[X/H] abundance for the A-Vesta set of parameters (2)log(Sun)phys.abundfloate_A-Vesta[-0.034/0.091] Total error in A-Vesta (3)log(Sun)stat.errorfloatB-Vesta[-0.449/-0.236] {Delta}[X/H] abundance for the B-Vesta set of parameters (4)log(Sun)phys.abundfloate_B-Vesta[0.008/0.087] Total error in B-Vesta (3)log(Sun)stat.error;phot.color;em.opt.BfloatB-A[-0.005/0.057] {Delta}[X/H] abundance for the B-A set of parameters (5)log(Sun)phys.abundfloate_B-A[0.006/0.057] Total error in B-A (3)log(Sun)stat.errorfloatA-B[-0.05/0.007] {Delta}[X/H] abundance for the A-B set of parameters (5)log(Sun)phys.abundfloate_A-B[0.007/0.058] Total error in A-B (3)log(Sun)stat.errorfloatJ/AJ/152/167/table7Measured lines and equivalent widthsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIon[6/106] Ionphys.atmol.ionStagefloatlambda[4218.72/6607] Wavelength {lambda} (in {AA})0.1nmem.wldoubleEP[0/8.537] Excitation potential {Chi}eVphys.atmol.excitationfloatloggf[-5/0.6] Log of the oscillator strengthphys.atmol.oscStrengthfloatEWS[3.3/137.9] Equivalent width of the solar spectrum (EW_{Sun}_) (in m{AA})0.1pmspect.line.eqWidthfloatEWA[1.8/117.8]? Equivalent width of the HD133131A spectrum (in m{AA})0.1pmspect.line.eqWidthfloatnullableEWB[1.8/118.5]? Equivalent width of the HD133131B spectrum (in m{AA})0.1pmspect.line.eqWidthfloatnullable