J/MNRAS/320/451ivo://CDS.VizieR/J/MNRAS/320/451CDSBeers T.C.Rossi S.O'Donoghue D.Kilkenny D.Stobie R.S.Koen C.,Wilhelm R.2026-03-22T20:02:32Z2006-03-22T14:49:12ZCDS support team

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

cds-question@unistra.frpopulation-ii-starsmetallicityThe Edinburgh-Cape Blue Object Survey is an ongoing project to identify and analyse a large sample of hot stars selected initially on the basis of photographic colours (down to a magnitude limit (B~18.0) over the entire high-Galactic-latitude southern sky, and then studied with broad-band UBV photometry and medium-resolution spectroscopy. Due to unavoidable errors in the initial candidate selection, stars that are likely metal-deficient dwarfs and giants of the halo and thick-disc populations are inadvertently included, yet are of interest in their own right. In this paper we discuss a total of 206 candidate metal-deficient dwarfs, subgiants, giants, and horizontal-branch stars with photoelectric colours redder than (B-V)_0_=0.3, and with available spectroscopy. Radial velocities, accurate to ~10-15km/s, are presented for all of these stars. Spectroscopic metallicity estimates for these stars are obtained using a recently recalibrated relation between Ca II K-line strength and (B-V)_0_ colour. The identification of metal-poor stars from this colour-selection technique is remarkably efficient, and competitive with previous survey methods. An additional sample of 186 EC stars with photoelectric colours in the range -0.4<=(B-V)_0_<0.3, photoelectric colours in the range composed primarily of field horizontal-branch stars and other, higher gravity, A- and B-type stars, is also analysed. Estimates of the physical parameters T_eff_, log g and [Fe/H] are obtained for cooler members of this subsample, and a number of candidate RR Lyrae variables are identified.2001MNRAS.320..451Bhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/320/451CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/AJ/117/981 : Estimation of stellar metal abundance. II. (Beers+, 1999)J/MNRAS/287/867 : Edinburgh-Cape Blue Object Survey. Zone 1. (Kilkenny+ 1997)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/320/451https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/320/451http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/320/451https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/320/451https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/320/451http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/320/451GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/320/451/table1 (Observed quantities for EC programme stars)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/320/451/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/320/451/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/320/451/table1?GETtext/xml+votable180.050000true3.061325-32.4524130.005555555555555556Cone search capability for table J/MNRAS/320/451/table2 (Previous identifications for EC programme stars)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/320/451/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/320/451/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/320/451/table2?GETtext/xml+votable180.050000true6.5606544-23.01005190.005555555555555556Cone search capability for table J/MNRAS/320/451/table4 (Probable horizontal-branch blue (HBB) stars)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/320/451/table4?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/320/451/table4?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/320/451/table4?GETtext/xml+votable180.050000true6.5527-23.00650.005555555555555556Cone search capability for table J/MNRAS/320/451/table5 (Physical parameter estimates - EC hot stars)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/320/451/table5?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/320/451/table5?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/320/451/table5?GETtext/xml+votable180.050000true3.0572-32.43850.005555555555555556Cone search capability for table J/MNRAS/320/451/table6 (Derived quantities - EC cool stars)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/320/451/table6?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/320/451/table6?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/320/451/table6?GETtext/xml+votable180.050000true3.0572-32.43850.0055555555555555566/16480 16621 16675 16769 16871 16897 16905 16917 16924 16963 17102 17121 17124 17126 21002 21037 21158 21224 21230 23087 24629 24634 24647 24692 24710 24714 24719 24730 24750 24755 24772 24813 24841 24868 24879 24892 24908 24950 24953 24966 24986 25013 25015 25034-25036 25039 25054 25067 25070 25073 25090 25092 25099 25104 25120 25127 25132 25134-25135 25147 25155 25158-25159 25179 25199-25200 25226 25245 25248-25249 25269 25274 25282 25286 25294-25295 25320 25345 25357 25603 25608 25616 25634 25649 25651 25664 25668 26632 26636-26637 26669 26671 26687 26756 26762 26774 26792 26808 32792 32860 32867 32878 32905 32921 32933 32939 33024 33263 33281 33343 33365 33379 33386 33466 33468 33470 33553 33672 33808-33809 33821 33826 33830 33842 33857 33860 33864 33957 33968 34076 34148 34158 34231 34267 34274 34277 34285 34290 34296 34302 34343 34427 34430 34471 34512-34514 34538 34635 34644 34647 34757 34817 34832 34886 34957 35011 35251 35784 35899 36427 36470 37032 37035 37376 38391 38393-38394 38741 38767 38772 38783 38854 38862 38869 38899 40261 40276 40285 40287 40349 40373 40391 40397 40400 40412 40430-40431 40447 40757 40769 40778 40800 43768 43830 43835 43883 43890 43894 43913 43928-43929 43931 43933 43935 43951 43971 43977-43978 43980 43999 44031 44446-44447 44468 44491 44507 44516 44525 44530 44547 44562 44568 44571 44589 44597-44598 44600 44617 44622 44625 44635 44639 44641 44648 44650-44651 44664 44672 44674-44675 44680 44719 44721 44738 44765 44801 44803 44806 44809-44811 44906 44943 44945 44951 44959 44965 44994 45078 45128 45183 45233 45241 45261 45270 45288-45290 45308 45311 45463 45596-45597 45620 45631 45633 45648 45672 45682 45687 45694 45717 45772-45773 45777 45793-45794 45804 45811 45817-45819 45876 45878 45965 45994 46004 46014 46204 46277 46293 46943 46966 47032 47087 47185 47193 47360-47361 47371 47386-47387 47390 47399 47411 47419 47421 47460 47474 47506-47507 47512 47547 47607 48188-48189 48270 48287 48292 48309 48313 48320 48337 48640 48642 48650 48659 48735 48755-48756 48758-48760 48763 48852 48855 48906 48928 48930 48937https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/320/451?format=asciidefaultJ/MNRAS/320/451/table1Observed quantities for EC programme starsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintECEdinburgh-Cape source name, based on positionmeta.id;meta.maincharn_EC[a-e] Star peculiarity (1)meta.notecharRAB1950Right ascension (B1950.0)pos.eq.ra;meta.mainDEB1950Declination (B1950.0)pos.eq.dec;meta.mainVmagV magnitudemagphot.mag;em.opt.VfloatB-VB-V colour indexmagphot.color;em.opt.B;em.opt.VfloatU-BU-B colour indexmagphot.color;em.opt.U;em.opt.BfloatE(B-V)Reddeningmagphot.color.excessfloatHRVHeliocentric radial velocitykm/sspect.dopplerVeloc;pos.heliocentricintKP? Ca II K line index (G2)0.1nmspect.indexfloatnullableHeI1? HeI (4026{AA}) line index (G2)0.1nmspect.indexfloatnullableHeI2? HeI (4471{AA}) line index (G2)0.1nmspect.indexfloatnullableHP2Balmer line index (Beers et al., 1999, Cat. J/AJ/117/981)0.1nmspect.indexfloatGP? G-band index (G2)0.1nmspect.indexfloatnullableSpTypeSpectral type (2)src.spTypecharBeersDetails from Beers et al. (J/AJ/117/981)meta.ref.urlcharSimbadSimbad column added by the CDSmeta.ref.urlchar_RA.icrsRight ascension (ICRS) (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services)pos.eq.ranullableindexed_DE.icrsDeclination (ICRS) (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services)pos.eq.decnullableindexedJ/MNRAS/320/451/table2Previous identifications for EC programme starsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintECEdinburgh-Cape star namemeta.id;meta.maincharHD? HD (Cat. III/135) numbermeta.idintnullableDMDurchmusterung (BD, CD, CPD) designationmeta.idcharBPSCS or BS namemeta.idcharONamesOther namesmeta.idcharSimbadSimbad 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.mainJ/MNRAS/320/451/table4Probable horizontal-branch blue (HBB) starsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintECEdinburgh-Cape star namemeta.id;meta.maincharn_EC[:] : for stars that may be composite starsmeta.notecharSimbadSimbad column added by the CDSmeta.ref.urlchar_RABcompPosition (derived from EC name) (right ascension part)degpos.eq.ra;meta.main_DEBcompPosition (derived from EC name) (declination part)degpos.eq.dec;meta.main_RA.icrsRight ascension (ICRS) (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services)degpos.eq.ranullableindexed_DE.icrsDeclination (ICRS) (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services)degpos.eq.decnullableindexedJ/MNRAS/320/451/table5Physical parameter estimates - EC hot starsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintTeffEffective temperatureKphys.temperature.effectiveintu_TeffUncertainty on Teffmeta.code.error;phys.temperature.effectivecharloggSurface gravitylog(cm.s**-2)phys.gravityfloatu_loggUncertainty flag on loggmeta.code.errorchar[Fe/H]WKMetallicity based on Ca II K equivalent widthSunphys.abund.Fefloat[Fe/H]CTA? Metallicity based on Ca II K line profileSunphys.abund.Fefloatnullable[Fe/H]MTA? Metallicity based on Ca II K line profile for Am starsSunphys.abund.Fefloatnullableu_[Fe/H]MTAUncertainty flag on [Fe/H]MTAmeta.code.error;phys.abund.Fechar[Fe/H]? Average metallicitySunphys.abund.Z;stat.meanfloatnullableu_[Fe/H]Uncertainty flag on [Fe/H]meta.code.error;phys.abund.Fechare_[Fe/H]? rms uncertainty on [Fe/H]stat.error;phys.abund.FefloatnullableClassEC classification (G1)meta.code.classcharVMAG? Absolute V magnitudemagphys.magAbs;em.opt.VfloatnullableDist? Distancepcpos.distance;pos.heliocentricintnullableNotes[rR, ] Notes (1)meta.notecharSimbadSimbad column added by the CDSmeta.ref.urlchar_RABcompPosition (derived from EC name) (right ascension part)degpos.eq.ra;meta.main_DEBcompPosition (derived from EC name) (declination part)degpos.eq.dec;meta.main_RA.icrsRight ascension (ICRS) (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services)degpos.eq.ranullableindexed_DE.icrsDeclination (ICRS) (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services)degpos.eq.decnullableindexedECEdinburgh-Cape star namemeta.id;meta.maincharJ/MNRAS/320/451/table6Derived quantities - EC cool starsu_[Fe/H]K3Uncertainty flag on [Fe/H]K3meta.code.error;phys.abund.Fechare_[Fe/H]K3rms uncertainty on [Fe/H]K3stat.error;phys.abund.FefloatrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintECEdinburgh-Cape star namemeta.id;meta.maincharClassEC classification (G1)meta.code.classcharu_ClassUncertainty flag on Classmeta.code.errorcharVMAGAbsolute V magnitudemagphys.magAbs;em.opt.VfloatVMAG2? Secons absolute V magnitude estimate (1)magphys.magAbsfloatnullableDistDistancepcpos.distance;pos.heliocentricintDist2? Second distance estimate (1)pcpos.distance;pos.heliocentricintnullable[Fe/H]K3Estimate metallicity by application of Beers et al., (1999, Cat. <J/AJ/117/981>) calibrationSunphys.abund.FefloatBeersDetails from Beers et al. (J/AJ/117/981)meta.ref.urlcharSimbadSimbad column added by the CDSmeta.ref.urlchar_RABcompPosition (derived from EC name) (right ascension part)degpos.eq.ra;meta.main_DEBcompPosition (derived from EC name) (declination part)degpos.eq.dec;meta.main_RA.icrsRight ascension (ICRS) (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services)degpos.eq.ranullableindexed_DE.icrsDeclination (ICRS) (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services)degpos.eq.decnullableindexed