LAMOST-DR3 very metal-poor star catalog J/ApJS/238/16 ivo://CDS.VizieR/J/ApJS/238/16 doi:10.26093/cds/vizier.22380016 CDS Li H. Tan K. Zhao G. 2019-01-28T05:57:24Z 2019-01-25T15:01:45Z CDS support team CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France cds-question@unistra.fr chemically-peculiar-stars chemical-abundances stellar-distance radial-velocity infrared-photometry visible-astronomy broad-band-photometry We present the result of a search for very metal-poor (VMP, [Fe/H]{<}-2.0) stars in the Milky Way based on low-resolution spectra from Large sky Area Multi-Object fiber Spectroscopic Telescope (LAMOST) DR3, significantly enlarging the current candidate sample of these low-metallicity objects. The selection procedure results in a sample of 10008 VMP stars covering a large area of sky in the Northern Hemisphere, and includes over 6800 targets brighter than V~16. This LAMOST DR3 VMP sample provides the largest number of VMP candidates to date that are sufficiently bright for follow-up high-resolution observation with 4-10m telescopes, greatly expanding the VMP stars discovered in the northern sky, and can be used to balance the spatial distribution of VMP stars with high-resolution spectroscopic analyses. Comparison with stars having existing high-resolution analyses and Tycho Gaia Astrometric Solution parallaxes indicates that the derived stellar parameters and distance estimates are reliable. The sample reaches beyond 40kpc in the halo, and contains over 670 candidates of extremely metal-poor ([Fe/H]{<}-3.0) and ultra-metal-poor ([Fe/H]{<}-4.0) stars. The distribution of V{phi} indicates that the sample consists of two halo components, with the retrograde component likely to be associated with the outer-halo population. A new criterion is proposed to select carbon-enhanced metal-poor (CEMP) star candidates, using line indices G1 and EGP over the range 4000K<Teff<7000K, resulting in 636 CEMP candidates from the LAMOST DR3 VMP sample. 2018ApJS..238...16L https://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJS/238/16 Catalog Research IsServedBy TAP VizieR generic service IsServedBy Conesearch service related-to I/284 : The USNO-B1.0 Catalog (Monet+ 2003) I/317 : The PPMXL Catalog (Roeser+ 2010) VII/233 : The 2MASS Extended sources (IPAC/UMass, 2003-2006) II/328 : AllWISE Data Release (Cutri+ 2013) V/147 : The SDSS Photometric Catalogue, Release 12 (Alam+, 2015) V/153 : LAMOST DR4 catalogs (Luo+, 2018) 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/A+AS/117/227 : Dwarf effective temperatures (Alonso+ 1996) J/AJ/120/1841 : Abundances & Kinematics of Halo & Disk Stars (Fulbright 2000) J/A+A/416/1117 : Abundances in the early Galaxy (Cayrel+, 2004) J/A+A/439/129 : HERES II. Spectroscopic analysis (Barklem+, 2005) J/AJ/132/137 : Abundances of extremely metal-poor carbon stars (Cohen+, 2006) J/A+A/484/721 : HES survey. IV. Candidate metal-poor stars (Christlieb+, 2008) J/ApJ/681/1524 : Detailed abundances for 28 metal-poor stars (Lai+, 2008) J/AJ/137/4377 : List of SEGUE plate pairs (Yanny+, 2009) J/A+A/522/A54 : Distance determination for RAVE stars. II. (Zwitter+, 2010) J/ApJ/742/54 : CASH project II. 14 extremely metal-poor stars (Hollek+, 2011) J/A+A/535/A107 : Spectroscopic survey of thick disc stars (Kordopatis+, 2011) J/AJ/142/188 : Metal-poor stars from the HES using CH G-band (Placco+, 2011) J/MNRAS/412/843 : SAGA extremely metal-poor stars (Suda+, 2011) J/A+A/548/A34 : Abundances of carbon-enhanced metal-poor stars (Allen+, 2012) J/AJ/145/13 : Metal-poor stars from SDSS/SEGUE. I. Abundances (Aoki+, 2013) J/ApJ/778/56 : Hamburg/ESO Survey extremely metal-poor stars (Cohen+, 2013) J/ApJ/762/25 : The most metal-poor stars in HES and SDSS. I. (Norris+, 2013) J/ApJ/762/26 : Most metal-poor stars. II. Galactic halo stars (Yong+, 2013) J/ApJ/781/40 : Metal-poor stars from HES survey. II. Spec. (Placco+, 2014) J/ApJ/797/21 : Carbon-enhanced metal-poor stars (Placco+, 2014) J/ApJ/797/69 : Abundances of late-type stars (Roederer+, 2014) J/AJ/147/136 : Stars of very low metal abundance. VI. (Roederer+, 2014) J/ApJ/794/60 : SDSS RGB stars distances (Tan+, 2014) J/AJ/150/187 : Abundances and stellar parameters of LAMOST stars (Lee+, 2015) J/ApJ/807/171 : SkyMapper Survey metal-poor star spectrosc. (Jacobson+, 2015) J/ApJ/798/110 : Equivalent widths of LAMOST metal-poor stars (Li+, 2015) J/ApJ/833/20 : Carbon-enhanced metal-poor star abundances (Yoon+, 2016) https://cds.unistra.fr/vizier-org/licences_vizier.html https://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJS/238/16 https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJS/238/16 http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJS/238/16 https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJS/238/16 https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJS/238/16 http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJS/238/16 GET text/xml+votable https://tapvizier.cds.unistra.fr/TAPVizieR/tap Cone search capability for table J/ApJS/238/16/table2 (LAMOST-DR3 very metal-poor (VMP) star catalog) https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJS/238/16/table2? https://vizier.iucaa.in/viz-bin/conesearch/J/ApJS/238/16/table2? http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJS/238/16/table2? 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https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJS/238/16?format=ascii Infrared Optical default J/ApJS/238/16/table2 LAMOST-DR3 very metal-poor (VMP) star catalog r_E(B-V) Source for E(B-V) (1) meta.ref;pos.frame char Sname LAMOST spectral name meta.id char recno Record number assigned by the VizieR team. Should Not be used for identification. meta.record int LAMOST Object name (JHHMMSS.ss+DDMMSS.s) meta.id;meta.main char RAJ2000 Right Ascension in decimal degrees (J2000) deg pos.eq.ra;meta.main DEJ2000 [-9.1/62] Declination (J2000) deg pos.eq.dec;meta.main Teff [4209.5/6787.3] Effective temperature derived from LAMOST spectra K phys.temperature.effective float e_Teff [4.2/399] Uncertainty in Teff K stat.error;phys.temperature.effective float log(g) [0.7/4.5] Surface gravity derived from LAMOST spectra log(cm.s**-2) phys.gravity float e_log(g) [0.2/1] Uncertainty in log(g) log(cm.s**-2) stat.error float [Fe/H] [-4.6/-2] Metallicity derived from LAMOST spectra log(Sun) phys.abund.Z float e_[Fe/H] [0.1/0.4] Uncertainty in [Fe/H] log(Sun) stat.error;phys.abund.Fe float Bmag [7.7/18.9]? B magnitude from UCAC4 mag phot.mag;em.opt.B float nullable Vmag [7.4/17.3]? V magnitude from UCAC4 mag phot.mag;em.opt.V float nullable gmag [7.8/20]? g AB magnitude from SDSS DR12 mag phot.mag;em.opt.B float nullable rmag [7.5/21]? r AB magnitude from SDSS DR12 mag phot.mag;em.opt.R float nullable Jmag [6.6/18.1]? J magnitude from 2MASS mag phot.mag;em.IR.J float nullable Hmag [6.5/17.7]? H magnitude from 2MASS mag phot.mag;em.IR.H float nullable Ksmag [6.4/17.1]? Ks magnitude from 2MASS mag phot.mag;em.IR.K float nullable W2mag [6.3/17.4]? W2 (4.6um) magnitude from WISE mag phot.mag;em.IR.4-8um float nullable E(B-V) [0/7.2] Extinction mag phot.color.excess float r_pmRA Source of pmRA/pmDE (1) meta.ref;pos.pm;pos.eq.ra char pmRA [-297/340]? Proper motion in RA mas/yr pos.pm;pos.eq.ra float nullable pmDE [-436/354]? Proper motion in DE mas/yr pos.pm;pos.eq.dec float nullable RVel [-582/545] Radial velocity estimated from LAMOST spectra km/s phys.veloc;pos.heliocentric float velU [-2751/2035]? U velocity km/s phys.veloc;pos.cartesian.x double nullable velV [-4973/2868]? V velocity km/s phys.veloc;pos.cartesian.y double nullable velW [-2903/1799]? W velocity km/s phys.veloc;pos.cartesian.z double nullable Vphi [0.06/104575]? Rotational velocity km/s phys.veloc.rotat double nullable Zmax [-5878/14656]? Maximum Galactic scale height of its orbit kpc pos.distance double nullable Dist [0.05/87]? Distance estimated from isochrone kpc pos.distance;pos.heliocentric float nullable e_Dist [0.002/21.3]? Uncertainty in Dist kpc stat.error float nullable DistTGAS [0.1/17]? Distance from TGAS kpc pos.distance;pos.heliocentric float nullable e_DistTGAS [0.004/217]? Uncertainty in DistTGAS kpc stat.error float nullable sng [10/677] SNR at g-band of the LAMOST spectrum stat.snr float CaHK [-44.2/42.7] Line index CaHK; Angstroms (2) 0.1nm spect.index float K24 [-8.5/16.3] Line index K24; Angstroms (2) 0.1nm spect.index float K12 [-4.6/11.5]? Line index K12; Angstroms (2) 0.1nm spect.index float nullable K6 [-2.5/5.6]? Line index K6; Angstroms (2) 0.1nm spect.index float nullable HeI4026 [-5.1/1] Line index HeI4026; Angstroms (2) 0.1nm spect.index float HD24 [-7.6/8.6] Line index HD24; Angstroms (2) 0.1nm spect.index float HD12 [-3.8/5.8] Line index HD12; Angstroms (2) 0.1nm spect.index float CN1 [-8.4/9.2] Line index CN1; Angstroms (2) 0.1nm spect.line.eqWidth float CN2 [-6.9/10] Line index CN2; Angstroms (2) 0.1nm spect.line.eqWidth float Ca4227 [-3.1/4.4] Line index Ca4227; Angstroms (2) 0.1nm spect.index float G4300 [-5.6/9.5] Line index G4300; Angstroms (2) 0.1nm spect.line.eqWidth float G1 [-2.8/8.2] Line index G1; Angstroms (2) 0.1nm spect.index float Fe4383 [-6.2/21.1] Line index Fe4383; Angstroms (2) 0.1nm spect.index float Ca4455 [-6/2.9] Line index Ca4455; Angstroms (2) 0.1nm spect.index float HeI4471 [-4.5/1.1] Line index HeI4471; Angstroms (2) 0.1nm spect.index float Fe4531 [-5.7/6.4] Line index Fe4531; Angstroms (2) 0.1nm spect.index float Hbeta [-9.2/6.6] Line index Hbeta; Angstroms (2) 0.1nm spect.line.eqWidth float Fe5015 [-4.9/6.8] Line index Fe5015; Angstroms (2) 0.1nm spect.index float MG1 [-5.5/15.2] Line index MG1; Angstroms (2) 0.1nm spect.index float Mg2 [-5.7/12] Line index Mg2; Angstroms (2) 0.1nm spect.line.eqWidth float Mgb [-7.1/5.1] Line index Mgb; Angstroms (2) 0.1nm spect.line.eqWidth float Fe5270 [-3.6/4.1] Line index Fe5270; Angstroms (2) 0.1nm spect.index float Fe5335 [-18.4/5.3] Line index Fe5335; Angstroms (2) 0.1nm spect.index float Fe5406 [-3.4/2.6] Line index Fe5406; Angstroms (2) 0.1nm spect.index float Fe5709 [-10/20.3] Line index Fe5709; Angstroms (2) 0.1nm spect.index float Fe5782 [-16.9/11.3] Line index Fe5782; Angstroms (2) 0.1nm spect.index float NaD [-42.1/11.2] Line index NaD; Angstroms (2) 0.1nm spect.line.eqWidth float EGP [-1.1/-0.2] Line index EGP (see Equation (1)) mag spect.index float Teffhr [4400/6533]? Effective temperature from high-resolution analyses K phys.temperature.effective int nullable log(g)hr [0.1/4.8]? Surface gravity from high-resolution analyses log(cm.s**-2) phys.gravity float nullable [Fe/H]hr [-4.8/-1.3]? Metallicity from high-resolution analyses log(Sun) phys.abund.Fe float nullable [C/Fe]hr [-0.9/2.5]? log C/Fe abundance ratio from high-resolution analyses log(Sun) phys.abund float nullable Refhr Reference of high-resolution analyses (3) meta.bib char CEMP Flag for the 636 carbon-enhanced metal-poor (CEMP) candidates meta.code char DR4 Display the LAMOST DR4 data (V/153) within 0.1" meta.ref.url int nullable UCAC4 Display the UCAC4 data (I/322) within 1" meta.ref.url char Link2 Display the AllWISE data (II/328) within 1" meta.ref.url char Gaia Display the Gaia-DR2 data (I/345) within 1" meta.ref.url char SDSS Display the SDSS-DR12 data (V/147) within 1" meta.ref.url char Sloan Display the online SDSS data for the nearest object meta.ref.url char 2M Display the 2MASS data (Cutri+ 2003, II/246) within 3" meta.ref.url char