J/ApJ/788/39ivo://CDS.VizieR/J/ApJ/788/39doi:10.26093/cds/vizier.17880039CDSTeske J.K.Cunha K.Smith V.V.Schuler S.C.Griffith C.A.2017-09-04T08:04:06Z2017-07-10T13:51:20ZCDS support team

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

cds-question@unistra.frmultiple-starssolar-system-planetsline-intensitieschemical-abundancesThe relative abundances of carbon and oxygen have long been recognized as fundamental diagnostics of stellar chemical evolution. Now, the growing number of exoplanet observations enable estimation of these elements in exoplanetary atmospheres. In hot Jupiters, the C/O ratio affects the partitioning of carbon in the major observable molecules, making these elements diagnostic of temperature structure and composition. Here we present measurements of carbon and oxygen abundances in 16 stars that host transiting hot Jupiter exoplanets, and we compare our C/O ratios to those measured in larger samples of host stars, as well as those estimated for the corresponding exoplanet atmospheres. With standard stellar abundance analysis we derive stellar parameters as well as [C/H] and [O/H] from multiple abundance indicators, including synthesis fitting of the [O I] {lambda}6300 line and non-LTE corrections for the O I triplet. Our results, in agreement with recent suggestions, indicate that previously measured exoplanet host star C/O ratios may have been overestimated. The mean transiting exoplanet host star C/O ratio from this sample is 0.54 (C/O_{sun}_=0.54), versus previously measured C/O_host star_ means of ~0.65-0.75. We also observe the increase in C/O with [Fe/H] expected for all stars based on Galactic chemical evolution; a linear fit to our results falls slightly below that of other exoplanet host star studies but has a similar slope. Though the C/O ratios of even the most-observed exoplanets are still uncertain, the more precise abundance analysis possible right now for their host stars can help constrain these planets' formation environments and current compositions.2014ApJ...788...39Thttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/788/39CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toIII/211 : Keck/HIRES Sky Line Atlas (Osterbrock+ 1997)J/A+A/415/1153 : [Fe/H] for 98 extra-solar planet-host stars (Santos+, 2004)J/A+A/458/997 : Abundances for 6 transiting planet host stars (Santos+, 2006)J/AJ/141/11 : Spitzer observations of planet-host starsJ/A+A/558/A106 : Chemical abundances for 83 transit hosts (Mortier+, 2013)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/788/39https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/788/39http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/788/39https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/788/39https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/788/39http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/788/39GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/788/39/stars (Stars)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/788/39/stars?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/788/39/stars?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/788/39/stars?GETtext/xml+votable180.050000true291.77708331.38372220.0055555555555555566/2711 6638 7208 7240 9355 9459 12424 12983 13702 15129 15143 18093 24409 30466 32749https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/788/39?format=asciidefaultJ/ApJ/788/39/starsStarsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameHost star's namemeta.id;meta.maincharRAJ2000Simbad Hour of Right Ascension (J2000)pos.eq.ra;meta.mainDEJ2000Simbad Degree of Declination (J2000)pos.eq.dec;meta.mainVmagV band magnitude from Table 1magphot.mag;em.opt.VfloatName1Host star's name as written in table4.dat filemeta.idcharlinesEquivalent Widths and Abundances in table4meta.ref.urlcharSimbadSimbad column added by the CDSmeta.ref.urlcharJ/ApJ/788/39/table4Lines Measured, Equivalent Widths, and Abundancesf_EW-TRES3[*] Flag on EW-TRES3 (5)meta.codecharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIonIon designation (1)phys.atmol.ionStagecharWaveWavelength, in Angstroms0.1nmem.wlfloatExPotExcitation PotentialeVphys.atmol.excitationfloatlog(gf)Log of oscillator strengthphys.atmol.oscStrengthfloatEWSolHDSI? Solar equivalent width (2)1e-13mspect.line.eqWidthfloatnullableEWSolHDSSP? Solar equivalent width (3)1e-13mspect.line.eqWidthfloatnullableEWSolHIRSP? Solar equivalent width (4)1e-13mspect.line.eqWidthfloatnullablelogNSolHDSI? Log of solar number abundance (2)phys.abundfloatnullablelogNSolHDSS? Log of solar number abundance (3)phys.abundfloatnullablelogNSolHIRS? Log of solar number abundance (4)phys.abundfloatnullableEW-COROT2? CoRoT-2 equivalent width (4)1e-13mspect.line.eqWidthfloatnullablelogN-COROT2? Log of CoRoT-2 number abundance (4)phys.abundfloatnullableEW-TRES4? TrES-4 equivalent width (4)1e-13mspect.line.eqWidthfloatnullablelogN-TRES4? Log of TrES-4 number abundance (4)phys.abundfloatnullableEW-TRES2? TrES-2 equivalent width (4)1e-13mspect.line.eqWidthfloatnullablelogN-TRES2? Log of TrES-2 number abundance (4)phys.abundfloatnullableEW-WASP2? WASP-2 equivalent width (4)1e-13mspect.line.eqWidthfloatnullablelogN-WASP2? Log of WASP-2 number abundance (4)phys.abundfloatnullableEW-WASP12? WASP-12 equivalent width (3)1e-13mspect.line.eqWidthfloatnullablelogN-WASP12? Log of WASP-12 number abundance (3)phys.abundfloatnullableEW-HD149026? HD 149026 equivalent width (3)1e-13mspect.line.eqWidthfloatnullablelogN-HD149026? Log of HD 149026 number abundance (3)phys.abundfloatnullablef_EW-HD149026[*] Flag on EW-HD149026 (5)meta.codecharEW-HATP1? HAT-P-1 equivalent width (4)1e-13mspect.line.eqWidthfloatnullablelogN-HATP1? Log of HAT-P-1 number abundance (4)phys.abundfloatnullableEW-XO2S? XO-2S equivalent width (2)1e-13mspect.line.eqWidthfloatnullablelogN-XO2S? Log of XO-2S number abundance (2)phys.abundfloatnullableEW-XO2N? XO-2N equivalent width (2)1e-13mspect.line.eqWidthfloatnullablelogN-XO2N? Log of XO-2N number abundance (2)phys.abundfloatnullableEW-XO1? XO-1 equivalent width (2)1e-13mspect.line.eqWidthfloatnullablelogN-XO1? Log of XO-1 number abundance (2)phys.abundfloatnullableEW-TRES3? TRES-3 equivalent width (3)1e-13mspect.line.eqWidthfloatnullablelogN-TRES3? Log of TRES-3 number abundance (3)phys.abundfloatnullableEW-HD189733? HD 189733 equivalent width (2)1e-13mspect.line.eqWidthfloatnullablelogN-HD189733? Log of HD 189733 number abundance (2)phys.abundfloatnullablef_EW-HD189733[*] Flag on EW-HD189733 (5)meta.codecharEW-HD80606? HD 80606 equivalent width (3)1e-13mspect.line.eqWidthfloatnullablelogN-HD80606? Log of HD 80606 number abundance (3)phys.abundfloatnullableEW-HATP7? HAT-P-7 equivalent width (3)1e-13mspect.line.eqWidthfloatnullablelogN-HATP7? Log of HAT-P-7 number abundance (3)phys.abundfloatnullablef_EW-HATP7[*] Flag on EW-HATP7 (5)meta.codecharEW-HATP13? HAT-P-13 equivalent width (2)1e-13mspect.line.eqWidthfloatnullablelogN-HATP13? Log of HAT-P-13 number abundance (2)phys.abundfloatnullableEW-HATP16? HAT-P-16 equivalent width (4)1e-13mspect.line.eqWidthfloatnullablelogN-HATP16? Log of HAT-P-16 number abundance (4)phys.abundfloatnullableEW-WASP32? WASP-32 equivalent width (4)1e-13mspect.line.eqWidthfloatnullablelogN-WASP32? Log of WASP-32 number abundance (4)phys.abundfloatnullable