J/ApJ/931/146ivo://CDS.VizieR/J/ApJ/931/146doi:10.26093/cds/vizier.19310146CDSAoki W.Li H.Matsuno T.Xing Q.Chen Y.Christlieb N.Honda S.,Ishigaki M.N.Shi J.Suda T.Tominaga N.Yan H.-L.Zhao J.Zhao G.2025-06-19T20:10:37Z2024-05-15T08:05:05ZCDS support team

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

cds-question@unistra.frchemically-peculiar-starsspectroscopic-binary-starsvisible-astronomyspectroscopyradial-velocitymetallicityinfrared-photometrybroad-band-photometryThe chemical abundances of very metal-poor stars provide important constraints on the nucleosynthesis of the first generation of stars and early chemical evolution of the Galaxy. We have obtained high-resolution spectra with the Subaru Telescope for candidates of very metal-poor stars selected with a large survey of Galactic stars carried out with LAMOST. In this series of papers, we report on the elemental abundances of about 400 very metal-poor stars and discuss the kinematics of the sample obtained by combining the radial velocities measured in this study and recent astrometry obtained with Gaia. This paper provides an overview of our survey and follow-up program, and reports radial velocities for the whole sample. We identify seven double-lined spectroscopic binaries from our high-resolution spectra, for which radial velocities of the components are reported. We discuss the frequency of such relatively short-period binaries at very low metallicity.2022ApJ...931..146Ahttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/931/146CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toB/subaru : Log of Subaru Prime Focus Camera Exposures (ADAC NAOJ, 2007)II/246 : 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)II/336 : AAVSO Photometric All Sky Survey (APASS) DR9 (Henden+, 2016)I/345 : Gaia DR2 (Gaia Collaboration, 2018)V/164 : LAMOST DR5 catalogs (Luo+, 2019)J/AJ/124/1144 : Orbits of single-lined spectroscopic binaries (Latham, 2002)J/A+A/416/1117 : Abundances in the early Galaxy (Cayrel+, 2004)J/A+A/439/129 : HERES II. Spectroscopic analysis (Barklem+, 2005)J/A+A/484/721 : HES survey. IV. Cand. 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/ApJ/724/341 : Nucleosynthesis of massive metal-free stars (Heger+, 2010)J/AJ/145/13 : Metal-poor stars from SDSS/SEGUE. I. Abund. (Aoki+, 2013)J/ApJ/778/56 : Hamburg/ESO Survey extremely metal-poor stars (Cohen+, 2013)J/ApJ/762/26 : Most metal-poor stars. II. Galactic halo stars (Yong+, 2013)J/A+A/579/A28 : Abundances of 3 CEMP stars (Bonifacio+, 2015)J/ApJ/807/171 : SkyMapper Survey metal-poor star sp. (Jacobson+, 2015)J/ApJS/238/16 : LAMOST-DR3 very metal-poor star catalog (Li+, 2018)J/A+A/638/A145 : GALAH survey. FGK binary stars (Traven+, 2020)J/MNRAS/492/3241 : The Pristine survey. IX. (Venn+, 2020)J/ApJ/931/147 : Very metal-poor stars with LAMOST & Subaru. II. (Li+, 2022)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/931/146https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/931/146http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/931/146https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/931/146https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/931/146http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/931/146GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/931/146/table1 (Objects studied with high-resolution spectra)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/931/146/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/931/146/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/931/146/table1?GETtext/xml+votable180.050000true0.6463.72708330.0055555555555555566/24 143-144 146 154 207 337 368 377 428 697 815 1210 1224 1519 1533 1971 2064 2083 2087 2148 2404 2437 2579 2599 2602 2707 2737 2838 4170 4279 4282 4324 4413 4598 4694 4702 4705 4734 4783 4799 4821 4884 4909 4934 4948 4968 4974 4989 5036 5061 5109 5171 5190 5211 5222 5276 5316 5341 5354 5359 5381 5386 5406 5458 5491 5496-5497 5546 5667 5677 5713 5723 5979 5995 6264 6274 6287 6310 6333 6338 6378 6386 6392 6400 6412 6463 6486 6589 6624 6627-6628 6711 6728 6783 6850 6997 7008 7020 7046 7067 7119 7143 7242 7255 7336 7685 8201 8207 8212 8242 8262 8274 8312 8332 8377 8387 8395 8446 8525 8558 8564 8592 8642 8644 8752 8764 8766 8779 8834 8864 8880 8884 8890 8903 8920 9023 9026 9045 9091 9116 9121 9154 9167 9185 9198 9215 9261 9504 9512 9574 9639 9647 9649 9830 9846 9871 10003 10027 10051 10070 10118 10122 10132 10241 10307 10309 10318 10322 10335 10359 10376 10382 10440 10448 10491 10504 10506 10512-10513 10517 10520 10568 10581 10643 10705 10727 10783 10785 10797 10820 10828 10902 10914 10928 10937 11031 11079 11106 11149-11150 11344 11364 11367 11396 12517 12639 12704 13141 13344 13386 13411 13554 13703 13930 14959 14972 15067 15097 15100 15127 15135 15193 15314 15872 15885 17750 17767 17788 17813 17879 18001 18005 18094 18135 18178 18215 18230 18259 18293 18354 18370 18683 18804 18870 18878 18898-18899 18901 18999 19061 19084 19153 19210 19242 19256 19315 19360 19415 19429 19466 19469 19514 19652 19697 19811 19888 19901 19957 19963 20046 20167 20241 20310 20371 20381 21773 21831 21868 21876 22524 23088 23220 23259 23335 23876 23905 23967 24224 24248 24332 25817 25832 25854 25870 25904 25944 26018 26023 26048 26056 26066 26154 26164 26248 26276 26279 26284 26298 26318 26376 26382 26391 26397 26425 26446 26471 26485 26487 26504 26511 26530 26553 26565 26575 26591 26607 26845 26886 26961 27015 27024 27038 27061 27131 27142 27183 27195 27202 27242 27281 27438 27445 27466 27503 27538 27589 27670 27682 27696 27708 27727 27734 27756 27765 27817 27820-27821 27850 27853 27870 27942 27993 27998 28001 28012 28019 28041 28054 28060 28084 28093 28115-28116 28139 28165 28180 28259 28290 28318 28339 28345 28423 28444 28494 28519 28567 28594 28599 31303 31330 31402 31487 31492 31506 31509 31542 31571 31678 31680-31681 31710 31717 32034 32280 32400 32409 32437 32474 32549 32648 32676 32694 49105https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/931/146?format=asciiOpticalInfrareddefaultJ/ApJ/931/146/table1Objects studied with high-resolution spectraSimbadSimbad column added by the CDSmeta.ref.urlcharIDShort ID of a star (JHHMM+DDMM)meta.idcharprimaryrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSBSpectroscopic binary (link to Table 4)meta.ref.urlintnullableLAMOSTLAMOST position-based object name (JHHMMSS.ss+DDMMSS.s)meta.id;meta.maincharVmag[10/16.7]? APASS V magnitudemagphot.mag;em.opt.VfloatnullableEBVd[0.008/0.5] E(B-V) estimated from dust map from Green+ 2018MNRAS.478..651Gmagphot.color.excessfloatEBVNaD[0/0.8]? E(B-V) estimated from interstellar NaD lines (1)magphot.color.excessfloatnullableB0mag[10/17]? Reddening-corrected APASS B magnitude (2)magphot.mag;em.opt.BfloatnullableV0mag[9.7/16.6]? Reddening-corrected APASS V magnitude (2)magphot.mag;em.opt.Vfloatnullableg0mag[10.29/18.7]? Reddening-corrected APASS g magnitude (2)magphot.mag;em.opt.Rfloatnullabler0mag[9.6/17.8]? Reddening-corrected APASS r magnitude (2)magphot.mag;em.opt.RfloatnullableJ0mag[8.9/15.7] Reddening-corrected 2MASS J magnitude (2)magphot.mag;em.IR.JfloatKs0mag[8.3/15.3] Reddening-corrected 2MASS Ks magnitude (2)magphot.mag;em.IR.KfloatAPASSDisplay data from APASS DR9 (II/336) within 3"meta.ref.urlintnullableNobsNumber of observations for this source (link to Table 3)meta.numberintnullable2MDisplay the 2MASS data (II/246) within 3"meta.ref.urlchar_RAPositions from LAMOST names (right ascension part)degpos.eq.ra;meta.main_DEPositions from LAMOST names (declination part)degpos.eq.dec;meta.mainJ/ApJ/931/146/table3Observation and kinematics informationIDShort ID of a star (JHHMM+DDMM)meta.idcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintDateDate of observation (UT)'Y:M:D'time.epochnullableSNR[6/173.2] Signal to noise ratio, per pixel at 450nmstat.snrfloatHRV[-455/434] Heliocentric radial velocity, Subaru/HDSkm/sspect.dopplerVeloc;pos.heliocentricfloate_HRV[0/2] Error of heliocentric radial velocitykm/sstat.errorfloatplx[-0.4/6.2]? Gaia DR2 Parallaxmaspos.parallax.trigfloatnullablee_plx[0.013/0.4]? Error of parallaxmasstat.error;pos.parallaxfloatnullableDist[-10/10957] Distance, from plxpcpos.distanceinte_Dist[1/2448] Error of distancepcstat.errorintJ/ApJ/931/146/table4Double-lined spectroscopic binariesIDShort ID of a star (JHHMM+DDMM)meta.idcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintHRV-A[-293/53] Heliocentric radial velocity of component Akm/sspect.dopplerVeloc;pos.heliocentricfloate_HRV-A[0.04/1.3] Uncertainty in HRV-Akm/sstat.errorfloatHRV-B[-252/107] Heliocentric radial velocity of component Bkm/sspect.dopplerVeloc;pos.heliocentricfloate_HRV-B[0.05/0.7] Uncertainty in HRV-Bkm/sstat.errorfloatNl[7/45] Number of lines used in the analysismeta.numberint[Fe/H][-3.2/-1.8] Metallicityphys.abund.Zfloatu_[Fe/H]Uncertainty flag on [Fe/H]meta.code.error;phys.abund.FecharEWDisplay the equivalent width measurements for this source (link to Table 5)meta.ref.urlcharJ/ApJ/931/146/table5Equivalent widths of FeI lines in the primary stars of double-lined spectroscopic binariesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintlambda[4063.59/4191.5] Wavelength, FeI, Angstroms0.1nmem.wldoubleloggf[-0.7/0.07] Log, statistical weight*oscillator strengthstat.weight;phys.atmol.oscStrengthfloatExPot[1.5/2.9] Excitation potentialeVphys.atmol.excitationfloatEW-J0241+0946[46/157.6]? Equivalent width, FeI, J0241+09460.1pmspect.line.eqWidthfloatnullableEW-J1144+4032[110]? Equivalent width, FeI, J1144+40320.1pmspect.line.eqWidthfloatnullableEW-J1216+0231[40.8/83.8]? Equivalent width, FeI, J1216+02310.1pmspect.line.eqWidthfloatnullableEW-J1220+1637[71.2]? Equivalent width, FeI, J1220+16370.1pmspect.line.eqWidthfloatnullableEW-J1231+1232[65.7/110.5]? Equivalent width, FeI, J1231+12320.1pmspect.line.eqWidthfloatnullableEW-J1859+4506[21.6/111.6]? Equivalent width, FeI, J1859+45060.1pmspect.line.eqWidthfloatnullableEW-J2121-0138[60.9/170.6]? Equivalent width, FeI, J2121-01380.1pmspect.line.eqWidthfloatnullable