J/ApJS/238/16 LAMOST-DR3 very metal-poor star catalog (Li+, 2018)
A catalog of 10,000 very metal-poor stars from LAMOST DR3.
Li H., Tan K., Zhao G.
<Astrophys. J. Suppl. Ser., 238, 16 (2018)>
=2018ApJS..238...16L 2018ApJS..238...16L
ADC_Keywords: Stars, metal-deficient; Abundances; Stars, distances;
Radial velocities; Photometry, UBVRI
Keywords: catalogs ; methods: data analysis ; stars: Population II ; surveys
Abstract:
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 Vφ 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.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2.dat 542 10011 LAMOST-DR3 very metal-poor (VMP) star catalog
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See also:
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)
Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 19 A19 --- LAMOST Object name (JHHMMSS.ss+DDMMSS.s)
21- 60 A40 --- Sname LAMOST spectral name
62- 71 F10.6 deg RAdeg Right Ascension in decimal degrees (J2000)
73- 81 F9.6 deg DEdeg [-9.1/62] Declination (J2000)
83- 88 F6.1 K Teff [4209.5/6787.3] Effective temperature
derived from LAMOST spectra
90- 94 F5.1 K e_Teff [4.2/399] Uncertainty in Teff
96- 99 F4.2 [cm/s2] log(g) [0.7/4.5] Surface gravity derived
from LAMOST spectra
101-104 F4.2 [cm/s2] e_log(g) [0.2/1] Uncertainty in log(g)
106-110 F5.2 [Sun] [Fe/H] [-4.6/-2] Metallicity derived
from LAMOST spectra
112-115 F4.2 [Sun] e_[Fe/H] [0.1/0.4] Uncertainty in [Fe/H]
117-122 F6.3 mag Bmag [7.7/18.9]?=99.999 B magnitude from UCAC4
124-129 F6.3 mag Vmag [7.4/17.3]?=99.999 V magnitude from UCAC4
131-136 F6.3 mag gmag [7.8/20]?=99.99 g AB magnitude from SDSS DR12
138-143 F6.3 mag rmag [7.5/21]?=99.99 r AB magnitude from SDSS DR12
145-150 F6.3 mag Jmag [6.6/18.1]?=99.999 J magnitude from 2MASS
152-157 F6.3 mag Hmag [6.5/17.7]?=99.999 H magnitude from 2MASS
159-164 F6.3 mag Ksmag [6.4/17.1]?=99.999 Ks magnitude from 2MASS
166-171 F6.3 mag W2mag [6.3/17.4]?=99.999 W2 (4.6um) magnitude
from WISE
173-180 A8 --- r_E(B-V) Source for E(B-V) (1)
182-186 F5.3 mag E(B-V) [0/7.2] Extinction
188-192 A5 --- r_pmRA Source of pmRA/pmDE (1)
194-200 F7.2 mas/yr pmRA [-297/340]?=999.9 Proper motion in RA
202-208 F7.2 mas/yr pmDE [-436/354]?=999.9 Proper motion in DE
210-216 F7.2 km/s RVel [-582/545] Radial velocity estimated
from LAMOST spectra
218-225 F8.2 km/s velU [-2751/2035]?=999.99 U velocity
227-234 F8.2 km/s velV [-4973/2868]?=999.99 V velocity
236-243 F8.2 km/s velW [-2903/1799]?=999.99 W velocity
245-253 F9.2 km/s Vphi [0.06/104575]?=-9.99 Rotational velocity
255-262 F8.2 kpc Zmax [-5878/14656]?=-9.99 Maximum Galactic scale
height of its orbit
264-269 F6.3 kpc Dist [0.05/87]?=-9.99 Distance estimated from
isochrone
271-276 F6.3 kpc e_Dist [0.002/21.3]?=-9.99 Uncertainty in Dist
278-283 F6.3 kpc DistTGAS [0.1/17]?=-9.999 Distance from TGAS
285-291 F7.3 kpc e_DistTGAS [0.004/217]?=-9.999 Uncertainty in DistTGAS
293-297 F5.1 --- sng [10/677] SNR at g-band of the
LAMOST spectrum
299-305 F7.3 0.1nm CaHK [-44.2/42.7] Line index CaHK; Angstroms (2)
307-312 F6.3 0.1nm K24 [-8.5/16.3] Line index K24; Angstroms (2)
314-319 F6.3 0.1nm K12 [-4.6/11.5]?=-9.99 Line index K12;
Angstroms (2)
321-326 F6.3 0.1nm K6 [-2.5/5.6]?=-9.99 Line index K6; Angstroms (2)
328-333 F6.3 0.1nm HeI4026 [-5.1/1] Line index HeI4026; Angstroms (2)
335-340 F6.3 0.1nm HD24 [-7.6/8.6] Line index HD24; Angstroms (2)
342-347 F6.3 0.1nm HD12 [-3.8/5.8] Line index HD12; Angstroms (2)
349-354 F6.3 0.1nm CN1 [-8.4/9.2] Line index CN1; Angstroms (2)
356-361 F6.3 0.1nm CN2 [-6.9/10] Line index CN2; Angstroms (2)
363-368 F6.3 0.1nm Ca4227 [-3.1/4.4] Line index Ca4227; Angstroms (2)
370-375 F6.3 0.1nm G4300 [-5.6/9.5] Line index G4300; Angstroms (2)
377-382 F6.3 0.1nm G1 [-2.8/8.2] Line index G1; Angstroms (2)
384-389 F6.3 0.1nm Fe4383 [-6.2/21.1] Line index Fe4383; Angstroms (2)
391-396 F6.3 0.1nm Ca4455 [-6/2.9] Line index Ca4455; Angstroms (2)
398-403 F6.3 0.1nm HeI4471 [-4.5/1.1] Line index HeI4471; Angstroms (2)
405-410 F6.3 0.1nm Fe4531 [-5.7/6.4] Line index Fe4531; Angstroms (2)
412-417 F6.3 0.1nm Hbeta [-9.2/6.6] Line index Hbeta; Angstroms (2)
419-424 F6.3 0.1nm Fe5015 [-4.9/6.8] Line index Fe5015; Angstroms (2)
426-431 F6.3 0.1nm MG1 [-5.5/15.2] Line index MG1; Angstroms (2)
433-438 F6.3 0.1nm Mg2 [-5.7/12] Line index Mg2; Angstroms (2)
440-445 F6.3 0.1nm Mgb [-7.1/5.1] Line index Mgb; Angstroms (2)
447-452 F6.3 0.1nm Fe5270 [-3.6/4.1] Line index Fe5270; Angstroms (2)
454-460 F7.3 0.1nm Fe5335 [-18.4/5.3] Line index Fe5335; Angstroms (2)
462-467 F6.3 0.1nm Fe5406 [-3.4/2.6] Line index Fe5406; Angstroms (2)
469-474 F6.3 0.1nm Fe5709 [-10/20.3] Line index Fe5709; Angstroms (2)
476-482 F7.3 0.1nm Fe5782 [-16.9/11.3] Line index Fe5782; Angstroms (2)
484-490 F7.3 0.1nm NaD [-42.1/11.2] Line index NaD; Angstroms (2)
492-497 F6.3 mag EGP [-1.1/-0.2] Line index EGP (see Equation (1))
499-502 I4 K Teffhr [4400/6533]?=9999 Effective temperature
from high-resolution analyses
504-507 F4.2 [cm/s2] log(g)hr [0.1/4.8]?=9.99 Surface gravity
from high-resolution analyses
509-513 F5.2 [Sun] [Fe/H]hr [-4.8/-1.3]?=-9.99 Metallicity
from high-resolution analyses
515-519 F5.2 [Sun] [C/Fe]hr [-0.9/2.5]?=-9.99 log C/Fe abundance ratio
from high-resolution analyses
521-534 A14 --- Refhr Reference of high-resolution analyses (3)
536-542 A7 --- CEMP Flag for the 636 carbon-enhanced metal-poor
(CEMP) candidates
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Note (1): Reference as follows:
RJCE = Rayleigh-Jeans Color Excess method
SF2011 = Schlafly & Finkbeiner (2011ApJ...737..103S 2011ApJ...737..103S);
noEBV = no reliable estimation on E(B-V)
TGAS = Tycho Gaia Astronmetric Solution Catalog (I/345)
PPMXL = The PPMXL Proper Motion Catalog (I/317)
UCAC5 = The Fifth USNO CCD Astrograph Catalog (I/340)
USNOB = The USNO-B1.0 Catalog (I/284)
Note (2): Definition of the measured line indices (table 1):
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Index Line Band Blue Band Red Band
Å Å Å
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CaHK 3900.000-4000.000 3837.000-3877.000 4040.000-4080.000
K24 3921.700-3945.700 3903.000-3923.000 4000.000-4020.000
K12 3927.700-3939.700 3903.000-3923.000 4000.000-4020.000
K6 3930.700-3936.700 3903.000-3923.000 4000.000-4020.000
HeI4026 4020.200-4032.200 4000.000-4020.000 4144.000-4164.000
HD24 4089.800-4113.800 4000.000-4020.000 4144.000-4164.000
HD12 4095.800-4107.800 4000.000-4020.000 4144.000-4164.000
CN1 4142.125-4177.125 4080.125-4117.625 4244.125-4284.125
CN2 4142.125-4177.125 4083.875-4096.375 4244.125-4284.125
Ca4227 4222.250-4234.750 4211.000-4219.750 4241.000-4251.000
G4300 4281.375-4316.375 4266.375-4282.625 4318.875-4335.125
G1 4297.500-4312.500 4247.000-4267.000 4362.000-4372.000
Fe4383 4369.125-4420.375 4359.125-4370.375 4442.875-4455.375
Ca4455 4452.125-4474.625 4445.875-4454.625 4477.125-4492.125
HeI4471 4465.700-4477.700 4415.000-4435.000 4490.000-4510.000
Fe4531 4514.250-4559.250 4504.250-4514.250 4560.500-4579.250
Hbeta 4847.875-4876.625 4827.875-4847.875 4876.625-4891.625
Fe5015 4977.750-5054.000 4946.500-4977.750 5054.000-5065.250
MG1 5069.125-5134.125 4895.125-4957.625 5301.125-5366.125
Mg2 5154.125-5196.625 4895.125-4957.625 5301.125-5366.125
Mgb 5160.125-5192.625 5142.625-5161.375 5191.375-5206.375
Fe5270 5245.650-5285.650 5233.150-5248.150 5285.650-5318.150
Fe5335 5312.125-5352.125 5304.625-5315.875 5353.375-5363.375
Fe5406 5387.500-5415.000 5376.250-5387.500 5415.000-5425.000
Fe5709 5696.625-5720.375 5672.875-5696.625 5722.875-5736.625
Fe5782 5776.625-5796.625 5765.375-5775.375 5797.875-5811.625
NaD 5876.875-5909.375 5860.625-5875.625 5922.125-5948.125
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Note (3): Reference as follows:
Allen2012 = Allen et al. (2012, J/A+A/548/A34);
Andrievsky2009 = Andrievsky et al. (2009A&A...494.1083A 2009A&A...494.1083A);
Andrievsky2010 = Andrievsky et al. (2010A&A...509A..88A 2010A&A...509A..88A);
Aoki2005 = Aoki et al. (2005ApJ...632..611A 2005ApJ...632..611A);
Aoki2013 = Aoki et al. (2013, J/AJ/145/13);
Arnone2005 = Arnone et al. (2005A&A...430..507A 2005A&A...430..507A);
Barklem2005 = Barklem et al. (2005, J/A+A/439/129);
Bonifacio2012 = Bonifacio et al. (2012A&A...542A..87B 2012A&A...542A..87B);
Caffau2011 = Caffau et al. (2011Natur.477...67C 2011Natur.477...67C);
Carretta2002 = Carretta et al. (2002AJ....124..481C 2002AJ....124..481C);
Cohen2004 = Cohen et al. (2004ApJ...612.1107C 2004ApJ...612.1107C);
Cohen2006 = Cohen et al. (2006AJ...132...137C 2006AJ...132...137C);
Cohen2013 = Cohen et al. (2013, J/ApJ/778/56);
Fulbright2000 = Fulbright et al. (2000, J/AJ/120/1841);
Hollek2011 = Hollek et al. (2011, J/ApJ/742/54);
Honda2004 = Honda et al. (2004ApJ...607..474H 2004ApJ...607..474H);
Ishigaki2010 = Ishigaki et al. (2010PASJ...62..143I 2010PASJ...62..143I);
Ishigaki2012 = Ishigaki et al. (2012, J/ApJ/753/64);
Ivans2003 = Ivans et al. (2003ApJ...592..906I 2003ApJ...592..906I);
Jacobson2015 = Jacobson et al. (2015, J/ApJ/807/171);
Lai2007 = Lai et al. (2007ApJ...667.1185L 2007ApJ...667.1185L);
Lai2008 = Lai et al. (2008, J/ApJ/681/1524);
Li2015a = Li et al. (2015PASJ...67...84L 2015PASJ...67...84L);
Li2015b = Li et al. (2015RAA....15.1264L 2015RAA....15.1264L);
Li2015c = Li et al. (2015, J/ApJ/798/110);
Li2018 = Li et al. (2018ApJ...852L..31L 2018ApJ...852L..31L);
Matsuno2017 = Matsuno et al. (2017PASJ...69...24M 2017PASJ...69...24M);
Melendez2010AA = Melendez et al. (2010A&A...515L...3M 2010A&A...515L...3M);
Placco2014a = Placco et al. (2014, J/ApJ/781/40);
Rich2009 = Rich et al. (2009ApJ...701.1519R 2009ApJ...701.1519R);
Roederer2014a = Roederer et al. (2014, J/ApJ/797/69);
Roederer2014b = Roederer et al. (2014, J/AJ/147/136);
Yong2013 = Yong et al. (2013, J/ApJ/762/26)
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(End) Prepared by [AAS], Emmanuelle Perret [CDS] 19-Nov-2018