J/A+A/621/A112ivo://CDS.VizieR/J/A+A/621/A112doi:10.26093/cds/vizier.36210112CDSPavlenko Y.V.Kaminsky B.M.Jenkins J.S.Ivanyuk O.M.Jones H.R.A.,Lyubchik Y.P.2019-01-31T11:50:12Z2019-01-15T08:33:22ZCDS support team

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

cds-question@unistra.frstellar-agesstellar-masseslate-type-starschemical-abundancesWe report the results from the determination of stellar masses, carbon and oxygen abundances in the atmospheres of 107 stars from the CHEPS program. Our stars are drawn from a population with a significantly super-solar metallicity. At least 10 of these stars are known to host orbiting planets. In this work, we set out to understand the behavior of carbon and oxygen abundance in stars with different spectral classes, metallicities and Vsini, within the metal-rich stellar population. Masses of these stars were determined using the data from Gaia DR2 release. The oxygen and carbon abundances were determined by fitting the absorption lines. Oxygen abundances were determined by fits to the 6300.304{AA} OI line, and for the determination of the carbon abundances we used 3 lines of the CI atom and 12 lines of C_2_ molecule for the determination of carbon abundances. We determine masses and abundances of 107 CHEPS stars. There is no evidence that the [C/O] ratio depends on V sin i or the mass of the star, within our constrained range of masses, i.e. 0.82<M*/M_{sun}_<1.5 and metallicities -0.27<[Fe/H]<+0.39 and we confirm that metal-rich dwarf stars with planets are more carbon-rich in comparison with non-planet host stars, with a statistical significance of 96%. We find tentative evidence that there is a slight offset to lower abundance and a greater dispersion in oxygen abundances relative to carbon, and interpret this as potentially arising from the production of the oxygen being more effective at more metal-poor epochs. We also find evidence that for lower mass star's the angular momentum loss in star's with planets as measured by Vsini is steeper than star's without planets. In general, we find that the fast rotators (Vsini>5km/s) are massive stars.2019A&A...621A.112Phttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/621/A112CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/MNRAS/468/4151I : Spectroscopic properties for 107 stars (Ivanyuk+, 2017)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/621/A112https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/621/A112http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/621/A112https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/621/A112https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/621/A112http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/621/A112GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/621/A112/table5 (Parameters and abundances for all target stars)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/621/A112/table5?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/621/A112/table5?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/621/A112/table5?GETtext/xml+votable180.050000true22.5041764-19.60450190.0055555555555555566/17288 17447 17453 17507 20586 20633 20842 21270 21809 24597 24618 24702 25168 25276 25378 25484 25904 26679 28779 28891 29043 30929 32986 33604 33731 33873 34073 34425 34586 34793 35109 35146 35452 35615 35668 35811 35839-35840 36816 36952 36954 37418 37482 37565 37955 38127 38324 38452 38757 38856 39213 39425 39433 39441 39446 39463 39516 39623 39722 39813 39954 40080 40143 40183 40741 42044 42197 42205 42212 42224 42360 42519 42527 42570 42794 42808 42892 43047 43124 43387 43659 44223 44652 45112 45505 45646 46009 46032 46100 46118 46200 46364 46394 46437 46544 46603 46784 47223 47409 47580 47842 47894 47994 48061 48238 48658 48773https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/621/A112?format=asciidefaultJ/A+A/621/A112/table5Parameters and abundances for all target starsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintTypeSWP for stars with confirmed planets, NSWP for stars with no confirmed planetsmeta.codecharNameObject namemeta.id;meta.maincharTeffEffective temperatureKphys.temperature.effectiveintloggSurface gravitylog(cm.s**-2)phys.gravityfloatVtMicroturbulent velocitykm/sphys.velocfloatVsiniProjected rotational velocitykm/sphys.veloc.rotatfloatMassMass in solar units (Gaia DR2)log(Sun)phys.massfloatLumLuminosity in solar units (Gaia DR2)log(Sun)phys.luminosityfloatAgeAge according to MIST evolutionary tracksGyrtime.agefloat[Fe/H]Neutral iron abundance (1)log(Sun)phys.abund.Fefloat[C/H]Neutral carbon abundance (1)log(Sun)phys.abundfloate_[C/H]Uncertainty of neutral carbon abundancelog(Sun)stat.error;phys.abundfloat[O/H]Neutral oxygen abundance (1)log(Sun)phys.abundfloatFlag[*+] Flag (2)meta.code.errorcharSimbadSimbad column added by the CDSmeta.ref.urlchar_RARight Ascension (J2000) from SIMBAD (not part of the original data)degpos.eq.ra;meta.main_DEDeclination (J2000) from SIMBAD (not part of the original data)degpos.eq.dec;meta.main