J/ApJ/891/28ivo://CDS.VizieR/J/ApJ/891/28doi:10.26093/cds/vizier.18910028CDSTang B.Fernandez-Trincado J.G.Liu C.Yu J.Yan H.Gao QiShi J.,Geisler D.2023-06-08T12:20:02Z2021-09-03T09:36:55ZCDS support team

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

cds-question@unistra.frchemically-peculiar-starschemical-abundancesspectroscopyradial-velocityvisible-astronomyapparent-magnitudeInteresting chemically peculiar field stars may reflect their stellar evolution history and their possible origin in a different environment from where they are found now; this is one of the most important research fields in Galactic archeology. To explore this further, we have used the CN-CH bands around 4000{AA} to identify N-rich metal-poor field stars in LAMOST DR3. Here we expand our N-rich, metal-poor field star sample to ~100 stars in LAMOST DR5, where 53 of them are newly found in this work. We investigate light elements of common stars between our sample and APOGEE DR14. While Mg, Al, and Si abundances generally agree with the hypothesis that N-rich metal-poor field stars come from enriched populations in globular clusters, it is still inconclusive for C, N, and O. After integrating the orbits of our N-rich field stars and a control sample of normal metal-poor field stars, we find that N-rich field stars have different orbital parameter distributions compared to the control sample-specifically, apocentric distances, maximum vertical amplitude (Zmax), orbital energy, and z-direction angular momentum (Lz). The orbital parameters of N-rich field stars indicate that most of them are inner-halo stars. The kinematics of N-rich field stars support their possible GC origin. The spatial and velocity distributions of our bona fide N-rich field star sample are important observational evidence to constrain simulations of the origin of these interesting objects.2020ApJ...891...28Thttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/891/28CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toI/345 : Gaia DR2 (Gaia Collaboration, 2018)I/347 : Distances to 1.33 billion stars in Gaia DR2 (Bailer-Jones+, 2018)V/153 : LAMOST DR4 catalogs (Luo+, 2018)V/164 : LAMOST DR5 catalogs (Luo+, 2019)III/284 : APOGEE-2 data from DR16 (Johnsson+, 2020)J/A+A/354/169 : Metal-poor field stars abundances (Gratton+, 2000)J/AJ/125/197 : CN abundances of the 47 Tuc main sequence (Harbeck+, 2003)J/A+A/497/497 : Parameters from JHK flux (Gonzalez-Hernandez+, 2009)J/ApJ/712/L21 : Calcium abund. in 17 globular clusters (Carretta+, 2010)J/A+A/509/A93 : Carbon-enhanced metal-poor stars (Masseron+, 2010)J/A+A/534/A136 : Halo red giants from the SEGUE survey (Martell+, 2011)J/other/RAA/11.924 : Atmospheric parameters for 771 stars (Wu+, 2011)J/ApJ/757/164 : Oxygen abundances of dwarf stars (Ramirez+, 2012)J/ApJ/769/87 : Kinematics of halo red giants (Carollo+, 2013)J/AJ/149/153 : Red giant abundances in 10 GCs (Meszaros+, 2015)J/MNRAS/446/3319 : Line list for the NGC 1851 stars (Yong+, 2015)J/AJ/151/144 : ASPCAP weights for 15 APOGEE elements (Garcia+, 2016)J/MNRAS/465/501 : APOGEE N-rich stars in inner Galaxy (Schiavon+, 2017)J/ApJ/852/49 : Metal-poor stars in APOGEE DR13 (Hayes+, 2018)J/ApJS/239/32 : APOKASC-2 Kepler evolved stars cat. (Pinsonneault+, 2018)J/AJ/156/94 : IC166 APOGEE & Gaia DR2 data (Schiappacasse-Ulloa+, 2018)J/A+A/622/A191 : 885 globular cluster giants abundances (Masseron+, 2019)J/MNRAS/484/2832 : Proper motions of MW globular clusters (Vasiliev, 2019)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/891/28https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/891/28http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/891/28https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/891/28https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/891/28http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/891/28GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/891/28/table2 (Spectral indices of N-rich field stars found in this paper)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/891/28/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/891/28/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/891/28/table2?GETtext/xml+votable180.050000true13.1550761137.698768890.005555555555555556Cone search capability for table J/ApJ/891/28/table3 (N-rich field stars found in this paper and Paper I (Tang+ 2019ApJ...871...58T))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/891/28/table3?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/891/28/table3?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/891/28/table3?GETtext/xml+votable180.050000true260.9612230649.579740.0055555555555555566/823 928 1186 1686 2590 2693 4096 4591 4594 4613 4660 4662 4948 4985 5229 5481 5782 5939 6480 6503 7051 8348 8451 8496 8511 8553 8857 9246 9320 9342 9402 9462 9569 9710 9758 9838 10319 10400 10445 10520 10634 10782 10862 10957 11038 12291 12295 12375 12555 14889 14923-14924 14957 14963 14967 15137 15320 17663 18791 19082 19323 19474 19522 19811 21960 22493 22773 23285 24014 25597 25782 25784 25910 25980 26231 26526 26588 27250 27473 27496 27739 27888 28110 28518 28648 31039 31230 31388 31498 31638 31654 31671 31783 31975 32163 32291 32353 32438 32476 32482 325571.9867573869263685e-19 3.916500758235022e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/891/28?format=asciiOpticaldefaultJ/ApJ/891/28/table2Spectral indices of N-rich field stars found in this paperrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSeq[1/65] Running sequence numbermeta.id;meta.mainintRAJ2000Right Ascension in decimal degrees (J2000)degpos.eq.ra;meta.mainDEJ2000Declination in decimal degrees (J2000)degpos.eq.dec;meta.mainCN3839[-0.24/0.89] The CN3839 spectral index (1)spect.indexfloatCN4142[-1.13/-0.72] The CN4142 spectral index (1)spect.indexfloatCH4300[0.86/1.07] The CH4300 spectral index (1)spect.indexfloatdelCN3839[0.19/1.05] Delta CN3839 (2)spect.index;arith.difffloatdelCH4300[-0.11/0.05] Delta CH4300 (2)spect.index;arith.difffloatNoteAdditional note ("MR"=metal-rich or "MP"=metal-poor sample)meta.notecharJ/ApJ/891/28/table3N-rich field stars found in this paper and Paper I (Tang+ 2019ApJ...871...58T)SimbadNameSimbad column added by the CDSmeta.idcharnullableNote"Paper II"=this work; or "Paper I"= Tang+ 2019ApJ...871...58Tmeta.notecharLAMOSTDisplay the LAMOST DR4 (V/153) and DR5 (V/164) data within 0.5"meta.ref.urlcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSpIndDisplay the spectral indices for this source within 0.2" (link to Table 2)meta.ref.urlintnullableSeq[1/106] Running sequence numbermeta.id;meta.mainintRAJ2000Right Ascension in decimal degrees (J2000)degpos.eq.ra;meta.mainDEJ2000Declination in decimal degrees (J2000)degpos.eq.dec;meta.mainTeff[4258/5207] LAMOST DR5 effective temperatureKphys.temperature.effectivefloatlog(g)[0.65/2.83] LAMOST DR5 log surface gravitylog(cm.s**-2)phys.gravityfloat[Fe/H][-1.76/-1] LAMOST DR5 metallicityphys.abund.ZfloatRVel[-377.6/224.2] LAMOST DR5 radial velocitykm/sphys.veloc;pos.heliocentricfloatGmag[9.9/16.4]? Apparent Gaia DR2 G band magnitudemagphot.mag;em.optfloatnullableDist[1.6/27.6]? Heliocentric distance determined by Chao Liu (1)kpcpos.distancefloatnullableGaiaDisplay the Gaia DR2 data within 3"meta.ref.urlchar