J/ApJ/595/1154ivo://CDS.VizieR/J/ApJ/595/1154doi:10.26093/cds/vizier.15951154CDSFulbright J.P.Johnson J.A.2017-11-10T11:15:23Z2005-03-31T05:51:42ZCDS support team

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

cds-question@unistra.frchemically-peculiar-starschemical-abundanceseffective-temperatureWe present oxygen abundances derived from both the permitted and forbidden oxygen lines for 54 subgiants and giants with [Fe/H] values between -2.7 and solar with the goal of understanding the discrepancy in the derived abundances. A first attempt, using Teff values from photometric calibrations and surface gravities from luminosities obtained agreement between the indicators for turn-off stars, but the disagreement was large for evolved stars. We find that the difference in the oxygen abundances derived from the permitted and forbidden lines is most strongly affected by Teff, and we derive a new Teff scale based on forcing the two sets of lines to give the same oxygen abundances. These new parameters, however, do not agree with other observables, such as theoretical isochrones or Balmer-line profile based Teff determinations. Our analysis finds that one-dimensional, LTE analyses (with published non-LTE corrections for the permitted lines) cannot fully resolve the disagreement in the two indicators without adopting a temperature scale that is incompatible with other temperature indicators. We also find no evidence of circumstellar emission in the forbidden lines, removing such emission as a possible cause for the discrepancy.2003ApJ...595.1154Fhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/595/1154CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toI/239 : The Hipparcos and Tycho Catalogues (ESA 1997)II/180 : uvby-beta photometry of metal-poor stars (Schuster+ 1989)J/A+AS/97/951 : uvby-beta photometry of metal-poor stars (Schuster+ 1993)J/A+AS/117/317 : uvby-beta photometry of metal-poor stars VIII (Schuster+ 1996)J/A+A/290/885 : Abundances of very metal-poor stars (Primas+, 1994)J/A+A/300/751 : Metal-poor stars spectroscopy. II (Axer+, 1995)J/A+A/305/245 : Fe I in metal-poor stars (Magain+, 1996)J/A+A/314/191 : Metal-poor stars atmospheric parameters I (Gratton+, 1996)J/A+A/350/955 : Metal-poor stars atmospheric parameters II (Gratton+, 1999)J/A+A/356/238 : Metal-poor stars atmospheric parameters III (Carretta+ 2000)J/A+A/354/169 : Metal-poor field stars abundances (Gratton+, 2000)J/A+A/390/235 : Metal-poor stars OI and FeII equivalent widths (Nissen+ 2002)J/A+A/404/187 : Equivalent widths for metal-poor stars (Gratton+, 2003)J/AJ/119/2866 : Proper motions of metal-poor stars (Beers+, 2000)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/595/1154https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/595/1154http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/595/1154https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/595/1154https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/595/1154http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/595/1154GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/595/1154/table4 (Photometric Values)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/595/1154/table4?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/595/1154/table4?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/595/1154/table4?GETtext/xml+votable180.050000true1.313844-27.2717080.0055555555555555566/382 2921 2997 3712 5621 6058 6792 7710 7767 8314 8779 9065 12704 14358 14931 16115 16582 16808 16821 17099 18425 18553 18561 18990 19816 20390 21073 21269 22205 22558 23192 25051 25569 25607 25782 26304 26347 26380 26457 28664 28966 29548 29703 29765 29769 31757 32352 32468 34559 35768 36035 36126 36221 48636https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/595/1154?format=asciiOpticaldefaultJ/ApJ/595/1154/table3Equivalent Widths of 19 stars + VestarecnoRecord number assigned by the VizieR team. Should Not be used for identification.intIonIon identificationcharWaveWavelength in Angstroms0.1nmfloatVESTA? Vesta equivalent width in milliAngstroms (1)1e-13mfloatnullableH434? HIP 434 equivalent width in milliAngstroms1e-13mfloatnullableH484? HIP 484 equivalent width in milliAngstroms1e-13mfloatnullableH2463? HIP 2463 equivalent width in milliAngstroms1e-13mfloatnullableH3985? HIP 3985 equivalent width in milliAngstroms1e-13mfloatnullableH4993? HIP 4993 equivalent width in milliAngstroms1e-13mfloatnullableH5445? HIP 5445 equivalent width in milliAngstroms1e-13mfloatnullableH5458? HIP 5458 equivalent width in milliAngstroms1e-13mintnullableH17649? HIP 17649 equivalent width in milliAngstroms1e-13mfloatnullableH43228? HIP 43228 equivalent width in milliAngstroms1e-13mintnullableH58514? HIP 58514 equivalent width in milliAngstroms1e-13mintnullableH62235? HIP 62235 equivalent width in milliAngstroms1e-13mfloatnullableH65852? HIP 65852 equivalent width in milliAngstroms1e-13mfloatnullableH74491? HIP 74491 equivalent width in milliAngstroms1e-13mintnullableH88977? HIP 88977 equivalent width in milliAngstroms1e-13mintnullableH91182? HIP 91182 equivalent width in milliAngstroms1e-13mintnullableH94931? HIP 94931 equivalent width in milliAngstroms1e-13mfloatnullableH96248? HIP 96248 equivalent width in milliAngstroms1e-13mfloatnullableH106095? HIP 106095 equivalent width in milliAngstroms1e-13mintnullableH107337? HIP 107337 equivalent width in milliAngstroms1e-13mintnullableJ/ApJ/595/1154/table4Photometric ValuesC0C0 indexmagfloat(V-K)0? Dereddened (V-K) colour indexmagfloatnullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.intHIPHIP numberintprimaryV0Dereddened V magnitudemagfloatE(B-V)? Reddeningmagfloatnullable(B-V)0Dereddened B-V colour indexmagfloat(b-y)0Dereddened b-y colour indexmagfloat(V-Rj)0? Dereddened Johnson (V-R) colour indexmagfloatnullable(V-Rc)0? Dereddened Cousins (V-R) colour indexmagfloatnullable(V-Ij)0Dereddened Johnson (V-I) colour indexmagfloat(V-Ic)0? Dereddened Cousins (V-I) colour indexmagfloatnullableEWsDislay the Equivalent Width from table3charSimbadSimbad column added by the CDSchar_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.mainJ/ApJ/595/1154/table5Alonso Scale ParametersrecnoRecord number assigned by the VizieR team. Should Not be used for identification.intHIPHIP numberint[m/H]iniAdopted abundance scaling for the model atmosphere (input [Fe/H] value)SunfloatT(B-V)? Effective temperature derived from B-VKintnullableT(b-y)? Effective temperature derived from b-y (in table5.dat only)KintnullableT(V-R)? Effective temperature derived from V-RKintnullableT(V-I)? Effective temperature derived from V-IKintnullableT(V-K)? Effective temperature derived from V-KKintnullableTavgAverage effective temperatureKintTeffAdopted effective temperatureKinte_Teff? rms uncertainty on TeffKintnullableBCBolometric correctionmagfloatloggSurface gravitylog(cm.s**-2)floatVtTurbulent velocitykm/sfloatJ/ApJ/595/1154/table12Ad Hoc Scale Results (54 stars + Sun)recnoRecord number assigned by the VizieR team. Should Not be used for identification.intHIPHIP number (0=Sun)intE(Of)Of abundance (1)floate_E(Of)? rms uncertainty on E(Of)floatnullableE(Op)Op abundance (1)floate_E(Op)? rms uncertainty on E(Op)floatnullableE(FeI)FeI abundance (1)floate_E(FeI)? rms uncertainty on E(FeI)floatnullableE(FeII)FeII abundance (1)floate_E(FeII)? rms uncertainty on E(FeII)floatnullable[Fe/H]MetallicitySunfloat[Of/Fe]Of/Fe abundance (2)Sunfloate_[Of/Fe]? rms uncertainty on [Of/Fe]Sunfloatnullable[Op/Fe]Op/Fe abundance (2)Sunfloate_[Op/Fe]? rms uncertainty on [Op/Fe]Sunfloatnullable[Op/Of]Op/Of abundance (2)Sunfloate_[Op/Of]? rms uncertainty on [Op/Of]SunfloatnullableJ/ApJ/595/1154/table6Houdashelt Scale ParametersrecnoRecord number assigned by the VizieR team. Should Not be used for identification.intHIPHIP numberint[m/H]iniAdopted abundance scaling for the model atmosphere (input [Fe/H] value)SunfloatT(B-V)? Effective temperature derived from B-VKintnullableT(b-y)? Effective temperature derived from b-y (in table5.dat only)KintnullableT(V-R)? Effective temperature derived from V-RKintnullableT(V-I)? Effective temperature derived from V-IKintnullableT(V-K)? Effective temperature derived from V-KKintnullableTavgAverage effective temperatureKintTeffAdopted effective temperatureKinte_Teff? rms uncertainty on TeffKintnullableBCBolometric correctionmagfloatloggSurface gravitylog(cm.s**-2)floatVtTurbulent velocitykm/sfloatJ/ApJ/595/1154/table7Absolute MagnituderecnoRecord number assigned by the VizieR team. Should Not be used for identification.intHIPHIP numberintplxTrigonometric parallaxmasfloat(e_plx/plx)Relative error in plxfloatVMAGplxAbsolute V magnitude derived from parallaxesmagfloate_VMAGplxrms uncertainty on VMAGmagfloatVMAGH98? Absolute V magnitude from Hanson et al., 1998AJ....116.1286HmagfloatnullableVMAGAtt? Absolute V magnitude from Anthony-Twarog & Twarog, 1994, Cat. <J/AJ/107/1577>magfloatnullableVMAGHB? Absolute V magnitude for horizontal-branch starsmagfloatnullablen_VMAGHBAGB status (AGB or AGB?)charVMAGiso? Isochrone-derived absolute V magnitudemagfloatnullableVMAGAdopted absolute V magnitudemagfloate_VMAGrms uncertainty on VMAGmagfloatMassMasssolMassfloatJ/ApJ/595/1154/table9Alonso Scale Results (54 stars + Sun)recnoRecord number assigned by the VizieR team. Should Not be used for identification.intHIPHIP number (0=Sun)intE(Of)Of abundance (1)floate_E(Of)? rms uncertainty on E(Of)floatnullableE(Op)Op abundance (1)floate_E(Op)? rms uncertainty on E(Op)floatnullableE(FeI)FeI abundance (1)floate_E(FeI)? rms uncertainty on E(FeI)floatnullableE(FeII)FeII abundance (1)floate_E(FeII)? rms uncertainty on E(FeII)floatnullable[Fe/H]MetallicitySunfloat[Of/Fe]Of/Fe abundance (2)Sunfloate_[Of/Fe]? rms uncertainty on [Of/Fe]Sunfloatnullable[Op/Fe]Op/Fe abundance (2)Sunfloate_[Op/Fe]? rms uncertainty on [Op/Fe]Sunfloatnullable[Op/Of]Op/Of abundance (2)Sunfloate_[Op/Of]? rms uncertainty on [Op/Of]SunfloatnullableJ/ApJ/595/1154/table10Houdashelt Scale Results (54 stars + Sun)HIPHIP number (0=Sun)intE(Of)Of abundance (1)floatE(Op)Op abundance (1)floatrecnoRecord number assigned by the VizieR team. Should Not be used for identification.inte_E(Of)? rms uncertainty on E(Of)floatnullablee_E(Op)? rms uncertainty on E(Op)floatnullableE(FeI)FeI abundance (1)floate_E(FeI)? rms uncertainty on E(FeI)floatnullableE(FeII)FeII abundance (1)floate_E(FeII)? rms uncertainty on E(FeII)floatnullable[Fe/H]MetallicitySunfloat[Of/Fe]Of/Fe abundance (2)Sunfloate_[Of/Fe]? rms uncertainty on [Of/Fe]Sunfloatnullable[Op/Fe]Op/Fe abundance (2)Sunfloate_[Op/Fe]? rms uncertainty on [Op/Fe]Sunfloatnullable[Op/Of]Op/Of abundance (2)Sunfloate_[Op/Of]? rms uncertainty on [Op/Of]SunfloatnullableJ/ApJ/595/1154/table11Ad Hoc Parameter Scale (54 stars + Sun)recnoRecord number assigned by the VizieR team. Should Not be used for identification.intHIPHIP number (0=Sun)intTAHAd hoc temperatureKintloggSurface gravitylog(cm.s**-2)float[m/H]Adopted abundance scaling for the model atmosphere (input [Fe/H] value)SunfloatVtTurbulent velocitykm/sfloatDTeffTotal value of {Delta}TeffKinte_DTeff? rms uncertainty on DTeffKintnullable