J/ApJ/835/81ivo://CDS.VizieR/J/ApJ/835/81doi:10.26093/cds/vizier.18350081CDSBeers T.C.Placco V.M.Carollo D.Rossi S.Lee Y.S.Frebel A.,Norris J.E.Dietz S.Masseron T.2017-10-26T13:02:01Z2017-09-12T07:52:50ZCDS support team

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

cds-question@unistra.frchemical-abundancesradial-velocityspectroscopysurveysproper-motionsinfrared-photometryWe obtain estimates of stellar atmospheric parameters for a previously published sample of 1777 relatively bright (9<B<14) metal-poor candidates from the Hamburg/ESO Survey. The original Frebel+ (2006, J/ApJ/652/1585; Paper I) analysis of these stars was able to derive estimates of [Fe/H] and [C/Fe] only for a subset of the sample, due to limitations in the methodology then available. A new spectroscopic analysis pipeline has been used to obtain estimates of T_eff_, logg, [Fe/H], and [C/Fe] for almost the entire data set. This sample is very local-about 90% of the stars are located within 0.5kpc of the Sun. We consider the chemodynamical properties of these stars in concert with a similarly local sample of stars from a recent analysis of the Bidelman and MacConnell "weak metal" candidates by Beers+ (2014, J/ApJ/794/58). We use this combined sample to identify possible members of the halo stream of stars suggested by Helmi+ (1999Natur.402...53H) and Chiba & Beers (2000AJ....119.2843C), as well as stars that may be associated with stripped debris from the putative parent dwarf of the globular cluster Omega Centauri, suggested to exist by previous authors. We identify a clear increase in the cumulative frequency of carbon-enhanced metal-poor (CEMP) stars with declining metallicity, as well as an increase in the fraction of CEMP stars with distance from the Galactic plane, consistent with previous results. We also identify a relatively large number of CEMP stars with kinematics consistent with the metal-weak thick-disk population, with possible implications for its origin.2017ApJ...835...81Bhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/835/81CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toI/259 : The Tycho-2 Catalogue (Hog+ 2000)I/311 : Hipparcos, the New Reduction (van Leeuwen, 2007)I/320 : SPM 4.0 Catalog (Girard+, 2011)I/322 : UCAC4 Catalogue (Zacharias+, 2012)III/272 : RAVE 4th data release (Kordopatis+, 2013)J/AJ/90/2089 : Stars of very low metal abundance. I (Beers+, 1985)J/AJ/103/1987 : Stars of very low metal abundance (Beers+ 1992)J/AJ/117/981 : Estimation of stellar metal abundance. II. (Beers+, 1999)J/A+A/358/77 : Hamburg/ESO survey for bright QSOs. III. (Wisotzki+, 2000)J/AJ/119/2866 : Proper motions of metal-poor stars (Beers+, 2000)J/ApJ/652/1585 : Bright metal-poor stars from HES survey (Frebel+, 2006)J/ApJS/168/128 : UBVRcIc photometry of FHB and metal-poor stars (Beers+, 2007)J/AN/331/474 : Abundances of metal-poor stars (Frebel, 2010)J/AJ/139/1051 : Carbon-enhanced metal-poor stars in the Galaxy (Placco+, 2010)J/AJ/141/90 : SEGUE stellar parameter pipeline. V. (Lee+, 2011)J/MNRAS/412/843 : SAGA extremely metal-poor stars (Suda+, 2011)J/ApJ/788/180 : Very metal-poor stars in the Milky Way's halo (Carollo+, 2014)J/ApJ/794/58 : Metal-poor stars in the thick disk of the Galaxy (Beers+, 2014)J/ApJ/797/21 : Carbon-enhanced metal-poor stars (Placco+, 2014)J/ApJ/814/121 : CASH project. III. The CEMP star HE0414-0343 (Hollek+, 2015)J/ApJ/833/20 : Carbon-enhanced metal-poor (CEMP) star abundances (Yoon+, 2016)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/835/81https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/835/81http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/835/81https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/835/81https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/835/81http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/835/81GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/835/81/hesstars (Adopted reddening, stellar atmospheric parameters and derived parameters for the 1777 Hamburg/ESO Survey stars (tables 1-3, 5 and 6))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/835/81/hesstars?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/835/81/hesstars?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/835/81/hesstars?GETtext/xml+votable180.050000true0.84125-30.0191670.0055555555555555565/4652 6473 6818 8921 11540 6/5 6 8 10 4101 4104 8196 8197 8200 8202 16387 16391 16399 16400 16417 16426 16439 16445 16479 16481 16483 16485 16486 16487 16490 16495 16503 16529 16576 16583 16589 16616 16624 16625 16629 16630 16633 16638 16639 16650 16652 16653 16654 16659 16660 16662 16672 16678 16685 16698 16700 16729 16733 16736 16745 16778 16784 16810 16813 16815 16821 16823 16867 16873 16876 16895 16957 16981 16990 17002 17003 17007 17009 17013 17020 17031 17040 17050 17072 17073 17076 17087 17089 17090 17091 17096 17108 17114 17122 17129 17137 17139 17151 17159 17162 17181 17183 17192 17197 17198 17205 17208 17210 17217 17221 17245 17280 17282 17314 17325 17330 17350 17364 17369 17375 17383 17391 17398 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486321.5062136169708525e-19 1.7003137259100215e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/835/81?format=asciiOpticalInfrareddefaultJ/ApJ/835/81/hesstarsAdopted reddening, stellar atmospheric parameters and derived parameters for the 1777 Hamburg/ESO Survey stars (tables 1-3, 5 and 6)f_TeffRFlag on TeffR (4)meta.codecharNoteNote on HE (3)meta.notecharecc? Derived orbital eccentricitysrc.orbital.eccentricityfloatnullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintHEStar identifier (HHMM+DDMM; J2000)meta.id;meta.maincharm_HE[ABF] Multiplicity index on HE namemeta.code.multipcharONameOther star identifier(s)meta.idcharHKHK Survey star identifier(s)meta.idcharGLONGalactic longitudedegpos.galactic.lonGLATGalactic latitudedegpos.galactic.latfloatVmag[6.3/14.4]? Adopted V band magnitudemagphot.mag;em.opt.VfloatnullableB-V[-0.3/1.6]? Adopted (B-V) color indexmagphot.color;em.opt.B;em.opt.VfloatnullableJmag[6.9/14.6]? 2MASS J band magnitude (1)magphot.mag;em.IR.JfloatnullableJ-Ks[-0.3/1.1]? 2MASS (J-Ks) color index (1)magphot.color;em.IR.J;em.IR.KfloatnullableE(B-V)S[0.004/0.8] Schlegel+ 1998ApJ...500..525S E(B-V) estimatemagphot.color.excessfloatE(B-V)A[0/0.5] Corrected E(B-V) estimate (2)magphot.color.excessfloat2MDisplay the 2MASS data (Cutri+ 2003, II/246) within 3"meta.ref.urlcharRVelM[-369/444]? Radial velocity from our medium-resolution data; {+/-}10km/skm/sphys.veloc;pos.heliocentricfloatnullableRVelR[-331/337]? RAVE radial velocitykm/sphys.veloc;pos.heliocentricfloatnullablef_RVelRFlag on RVelR (4)meta.codecharRVelH[-374/442]? Radial velocity (5)km/sphys.veloc;pos.heliocentricfloatnullableKP[0.07/11.8]? The KP line index (6)0.1nmspect.indexfloatnullableHP2[0.03/11.4]? Balmer line index (6)0.1nmspect.indexfloatnullableGP[0.01/8.1]? The GP line index (6)0.1nmspect.indexfloatnullableTeffS[4193/8338]? Estimated effective temperature from non-SEGUE Stellar Parameter Pipeline (n-SSPP)Kphys.temperature.effectiveintnullablelog(g)S[0.3/5]? Estimated log surface gravity from n-SSPPlog(cm.s**-2)phys.gravityfloatnullable[Fe/H]S[-6.1/0.4]? Estimated metallicity from n-SSPPlog(Sun)phys.abund.FefloatnullableTeffR[3200/8000]? Estimated effective temperature from RAVEKphys.temperature.effectiveintnullablelog(g)R[0.09/5.5]? Estimated log surface gravity from RAVElog(cm.s**-2)phys.gravityfloatnullablef_log(g)RFlag on log(g)R (4)meta.codechar[Fe/H]R[-6.7/0.4]? Estimated metallicity from RAVElog(Sun)phys.abund.Fefloatnullablef_[Fe/H]RFlag on [Fe/H]R (4)meta.codecharTeffH[4360/6875]? Estimated effective temperature (5)Kphys.temperature.effectiveintnullablef_TeffHFlag on TeffH (4)meta.codecharlog(g)H[0.2/5]? Estimated log surface gravity (5)log(cm.s**-2)phys.gravityfloatnullablef_log(g)HFlag on log(g)H (4)meta.codechar[Fe/H]H[-5.6/0.3]? Estimated metallicity (5)log(Sun)phys.abund.Fefloatnullablef_[Fe/H]HFlag on [Fe/H]H (4)meta.codecharTeffC[3868/8742]? Estimated effective temperature from corrected n-SSPPKphys.temperature.effectiveintnullablelog(g)C[-0.09/5.7]? Estimated log surface gravity from corrected n-SSPPlog(cm.s**-2)phys.gravityfloatnullable[Fe/H]C[-7.1/0.3]? Estimated metallicity from corrected n-SSPPlog(Sun)phys.abund.FefloatnullableTypeAdopted type classification (7)src.classchar[C/Fe]S[-0.9/3.3]? Carbonicity; log C/Fe number abundance (8)log(Sun)phys.abundfloatnullableDetDetection flag (9)meta.code.errorcharCC? Correlation coefficient (10)stat.correlationfloatnullableEW[0.1/15]? Equivalent width of CH G-band; in units of Angstroms0.1nmspect.line.eqWidthfloatnullable[C/Fe]C[-1.3/3.2]? Corrected Carbonicity (12)log(Sun)phys.abundfloatnullableA(C)[3.8/61]? Absolute carbon abundance; log{epsilon}(C)phys.abundfloatnullableCEMPCarbon-enhanced metal-poor flag (13)meta.codecharDist[0.01/11]? Photometric distance estimatekpcpos.distance;pos.heliocentricfloatnullablee_Dist[0.003/1.6]? Uncertainty in Distkpcstat.errorfloatnullablepmRA[-230/246]? Proper motion along Right Ascensionmas/yrpos.pm;pos.eq.rafloatnullablepmDE[-547/69]? Proper motion along Declinationmas/yrpos.pm;pos.eq.decfloatnullablee_pmRA[0.5/15]? Uncertainty in pmRAmas/yrstat.error;pos.pm;pos.eq.rafloatnullablee_pmDE[0.4/19.2]? Uncertainty in pmDEmas/yrstat.error;pos.pm;pos.eq.decfloatnullableRefSource of the adopted proper motion (15)meta.bibcharR? R position in meridional planekpcpos.eqfloatnullableZ? Z position in meridional planekpcpos.distance;pos.cartesian.zfloatnullableU[-455/606]? Velocity from the Galactic centerkm/sphys.velocintnullableV[-741/1499]? Velocity along Galactic rotationkm/sphys.velocintnullableW[-408/399]? Velocity perpendicular to Galactic planekm/sphys.veloc;pos.galacticintnullablee_U? Uncertainty in Ukm/sstat.error;pos.cartesian.xintnullablee_V[0/229]? Uncertainty in Vkm/sstat.error;pos.cartesian.yintnullablee_W? Uncertainty in Wkm/sstat.error;pos.cartesian.zintnullableVR[-390/622]? Velocity projected onto Galactic plane (16)km/sphys.veloc;pos.galactocentricintnullableVphi[-887/1240]? Derived rotation velocitykm/sphys.veloc.rotatintnullablerperi[0.01/13]? Perigalactic radiuskpcphys.size.radiusfloatnullablerapo[5.8/177]? Apogalactic radiuskpcphys.size.radiusfloatnullableZmax[0.04/158]? Derived maximum distance from Galactic planekpcpos.cartesian.z;pos.galacticfloatnullableInINOUT parameter (1: star is accepted for the kinematic analysis)meta.codeintUCACDisplay data from UCAC4 (I/322) within 3"meta.ref.urlintnullableTYC2Display data from Tycho-2 (I/259) within 3"meta.ref.urlintnullableCCatDisplay data from Christlieb+ (2005, J/A+A/431/143 and 2008, J/A+A/484/721) within 2"meta.ref.urlintnullableSimbadSimbad column added by the CDSmeta.ref.urlchar_RAPositions from Paper I (Frebel+, 2006, J/ApJ/652/1585) or from Christlieb+, 2005, J/A+A/431/143 for HE 0414-0157 (right ascension part)degpos.eq.ra;meta.main_DEPositions from Paper I (Frebel+, 2006, J/ApJ/652/1585) or from Christlieb+, 2005, J/A+A/431/143 for HE 0414-0157 (declination part)degpos.eq.dec;meta.main