LAMOST DR3 very metal-poor stars of the Galactic halo J/ApJ/891/39 ivo://CDS.VizieR/J/ApJ/891/39 doi:10.26093/cds/vizier.18910039 CDS Yuan Z. Myeong G.C. Beers T.C. Evans N.W. Lee Y.S. Banerjee P.,Gudin D. Hattori K. Li H. Matsuno T. Placco V.M. Smith M.C.,Whitten D.D. Zhao G. 2022-07-20T07:30:54Z 2021-09-03T10:14:49Z 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 effective-temperature photometry visible-astronomy halo-stars We search for dynamical substructures in the LAMOST DR3 very metal-poor (VMP) star catalog. After cross-matching with Gaia DR2, there are ~3300 VMP stars with available high-quality astrometric information that have halo-like kinematics. We apply a method based on the self-organizing map StarGO to find groups clustered in the 4D space of orbital energy and angular momentum. We identify 57 dynamically tagged groups (DTGs), which we label DTG-1 to DTG-57. Most of them belong to existing massive substructures in the nearby halo, such as the Gaia Sausage or Sequoia. The stream identified by Helmi+ (1999Natur.402...53H) is recovered, but the two disjointed portions of the substructure appear to have distinct dynamical properties. The very retrograde substructure Rg5 found previously by Myeong+ (2018MNRAS.478.5449M) is also retrieved. We report six new DTGs with highly retrograde orbits, two with very prograde orbits, and 12 with polar orbits. By mapping other data sets (APOGEE halo stars, and catalogs of r-process-enhanced and carbon-enhanced metal-poor [CEMP] stars) onto the trained neuron map, we can associate stars with detailed chemical abundances with the DTGs and look for associations with chemically peculiar stars. The highly eccentric Gaia Sausage groups contain representatives of both debris from the satellite itself (which is {alpha}-poor) and the Splashed Disk, sent up into eccentric halo orbits from the encounter (and which is {alpha}-rich). The new prograde substructures also appear to be associated with the Splashed Disk. The DTGs belonging to the Gaia Sausage host two relatively metal-rich r-II stars and six CEMP stars in different subclasses, consistent with the idea that the Gaia Sausage progenitor is a massive dwarf galaxy. Rg5 is dynamically associated with two highly r-process-enhanced stars with [Fe/H]~-3. This finding indicates that its progenitor might be an ultrafaint dwarf galaxy that has experienced r-process enrichment from neutron star mergers. 2020ApJ...891...39Y https://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/891/39 Catalog Research IsServedBy TAP VizieR generic service IsServedBy Conesearch service related-to III/279 : RAVE 5th data release (Kunder+, 2017) I/345 : Gaia DR2 (Gaia Collaboration, 2018) V/153 : LAMOST DR4 catalogs (Luo+, 2018) J/A+A/439/129 : HERES II. Spectroscopic analysis (Barklem+, 2005) J/ApJ/701/1053 : Abundances of 8 stars in the Draco dSph (Cohen+, 2009) J/AJ/137/4377 : List of SEGUE plate pairs (Yanny+, 2009) J/A+A/523/A17 : Individual stars in Fornax dSph center (Letarte+, 2010) J/A+A/511/L10 : Abundances and space velocities of 94 stars (Nissen+, 2010) J/ApJ/778/56 : Hamburg/ESO Survey extremely metal-poor stars (Cohen+, 2013) J/ApJ/779/102 : Metallicities of RGB stars in dwarf galaxies (Kirby+, 2013) J/ApJ/794/58 : Metal-poor stars in the Galaxy thick disk (Beers+, 2014) J/ApJ/786/74 : EW measurements of 6 Segue 1 red giants (Frebel+, 2014) J/A+A/572/A88 : Measured EWs for Fornax RGB stars (Lemasle+, 2014) J/ApJ/797/21 : Carbon-enhanced metal-poor stars (Placco+, 2014) J/AJ/147/136 : Stars of very low metal abundance. VI. (Roederer+, 2014) J/A+A/579/A28 : Abundances of 3 CEMP stars (Bonifacio+, 2015) J/AJ/150/187 : Abundances & stellar parameters of LAMOST stars (Lee+, 2015) J/ApJ/833/20 : Carbon-enhanced metal-poor star abundances (Yoon+, 2016) J/ApJ/838/44 : Abund. of the brightest member of Tuc III (Hansen+, 2017) J/ApJ/858/92 : RPA Southern Pilot Search of 107 Stars (Hansen+, 2018) J/ApJS/238/16 : LAMOST-DR3 very metal-poor star catalog (Li+, 2018) J/AJ/156/179 : r-process-enhanced field stars kinematics (Roederer+, 2018) J/ApJ/868/110 : R-Process Alliance: 1st release in Gal. halo (Sakari+, 2018) J/A+A/623/A128 : Gal. halo CEMP stars abundances & kinematics (Hansen+, 2019) J/MNRAS/484/2832 : Proper motions of MW globular clusters (Vasiliev, 2019) https://cds.unistra.fr/vizier-org/licences_vizier.html https://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/891/39 https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/891/39 http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/891/39 https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/891/39 https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/891/39 http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/891/39 GET text/xml+votable https://tapvizier.cds.unistra.fr/TAPVizieR/tap Cone search capability for table J/ApJ/891/39/table5 (Cleaned LAMOST DR3 very metal-poor (VMP) star catalog) https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/891/39/table5? https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/891/39/table5? http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/891/39/table5? 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17887 17889 17891-17892 17894 17897 17902-17904 17906 17909 17913 17915-17917 17919 18000-18001 18003-18006 18012 18027 18031 18044 18087 18093-18095 18097-18099 18101-18103 18105-18110 18113 18117-18118 18124 18130 18133 18135 18138 18142 18144 18146 18148 18152 18171 18196 18210 18216 18222 18234 18247 18249 18253 18259 18265-18266 18293 18295 18300-18301 18309-18311 18317 18323 18336-18337 18356 18361 18366 18424 18663 18671-18672 18675 18678 18680 18683 18765-18767 18775 18778 18796-18797 18800 18802-18804 18806 18808 18810-18811 18833-18834 18838 18841 18844-18845 18847 18867-18868 18870-18871 18873-18874 18877-18878 18883 18891-18892 18904-18905 18915-18918 18922 18924 18935 18939 18953-18954 18975 18996 18999 19001 19006-19007 19021-19023 19026 19028-19030 19033-19035 19041-19044 19046-19047 19054-19058 19060-19062 19069 19072-19073 19078 19084-19085 19087 19090-19091 19093 19096 19100 19104 19123 19126 19137 19139 19142-19143 19145 19151-19152 19155 19163-19165 19172-19173 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20130 20139 20165 20167 20189-20191 20217-20218 20221 20244 20247 20251 20255 20275 20296 20302 20308-20310 20319-20320 20323-20324 20328 20333 20337-20338 20342-20343 20347-20350 20358 20376 20378 20383 20390 20393 20406-20407 20413 20424 20431 20434-20436 20438-20439 20444-20445 20447 20451 20454 20457-20458 20460 20464-20466 20469 20478 21456 21718 21749 21753 21768 21770 21772-21773 21775 21784 21796-21797 21812 21818 21821 21825 21831 21841 21845 21852-21853 21860 21862 21865-21868 21875-21876 21885 21898-21900 21909 21921-21922 21951-21952 21954 21962 21968 21971 21980 21983 21985-21986 21988 21990 21996 21999 22002 22005-22007 22012 22014 22102 22123 22131-22132 22195-22197 22200-22201 22204 22207 22218 22241 22269 22277 22297 22326 22334-22335 22337 22339 22355 22362 22390 22408 22410 22420 22429 22440 22451 22454 22461 22468 22485 22491-22492 22494 22508 22524-22525 22527 22686-22687 22723 22730-22731 22753 22764-22766 22778 22788-22789 22800 22807 22814 22860 22889 22910 22967 22969 23007 23077 23088 23092 23097 23118 23134 23149-23150 23152 23158 23164 23184 23188 23191 23202-23203 23206-23208 23211 23219-23221 23229-23231 23234-23237 23240 23243-23244 23251 23254 23257-23259 23268 23270 23273-23274 23277 23282-23283 23291 23293 23295 23385 23408 23410-23411 23456 23464-23465 23468 23513-23514 23516 23535 23541 23549-23550 23635-23636 23639 23663 23678-23679 23684 23691 23694 23702 23708 23711 23716 23721 23727 23748 23756 23758 23760 23762 23769 23774-23775 23789 23801-23802 23824 23831-23832 23841 23847 23863 23873 23875-23877 23892-23894 23913 23921 23924 23927 23929-23933 23938 23941 23958-23959 23967 23984 23986 24014 24016 24018 24020-24021 24030 24032 24057 24060 24069 24083 24104 24122 24139 24147 24151 24156-24157 24184 24219-24220 24224 24232 24248-24249 24258 24288-24289 24298 24320 24326 24328 24330-24332 24348 24352 24355 24357 24362 24378 24382 24384 24402 24410 24421 24441 24443 24446 24455-24456 24467-24468 24478-24481 24488-24489 24496 24499 24502 24506-24509 24511 24529-24530 24532 24534 24540 24544 24551-24552 24560 24562-24563 24571 25463 25465 25467 25518 25551 25558 25583 25587 25591 25593 25595 25598 25758 25783 25789 25795 25801 25805 25808 25813 25817 25821-25822 25826 25828 25832-25833 25836 25842 25845-25846 25853-25855 25857 25870 25903-25904 25920 25923 25926 25938-25939 25943-25944 25954 25961 25964 25972 25978 25995 25998-25999 26021-26023 26025-26028 26031-26032 26034-26035 26039-26041 26047-26048 26050 26055-26057 26060-26061 26063-26064 26066 26072-26073 26082 26087 26092-26093 26095-26096 26104 26106-26107 26110 26121 26123 26126 26135 26142 26147 26152 26154 26160 26164 26171 26181 26184-26185 26187 26189-26193 26202-26203 26208 26210 26213-26214 26229 26232-26233 26235 26240 26242 26248 26253 26256 26265 26272 26274 26276 26278-26279 26288 26292 26295-26296 26298-26299 26301 26309 26311 26313-26315 26317-26320 26328-26329 26336-26338 26340-26341 26344-26346 26348-26349 26357-26358 26360 26365-26368 26381-26383 26385 26389-26391 26396 26398-26399 26401 26404-26405 26409 26413 26415 26419 26425 26428-26429 26431-26432 26446 26452 26460 26469-26473 26475 26478 26483 26485 26487 26503 26511 26517 26527 26530-26531 26533-26538 26540 26542-26543 26545-26547 26553-26555 26561 26565 26570-26571 26573-26575 26577-26579 26596-26598 26603-26604 26607 26610-26613 26615 26617 26619 26837 26839 26844-26845 26847 26874 26879 26886 26914-26916 26919-26921 26923 26925-26926 26930 26936-26937 26961 26967 26969 26971 26973 26991 26998 27000-27001 27003 27009 27012 27015-27016 27018-27019 27024 27026-27028 27035-27036 27038-27039 27041 27043 27045 27049-27050 27053-27056 27058-27059 27061-27065 27067 27073 27082-27083 27087 27090-27091 27094-27095 27100 27102-27103 27105-27107 27110-27113 27115 27121 27123 27131 27135 27142-27144 27146 27151 27154 27162 27175 27180-27181 27184 27187 27190 27195-27196 27199 27202-27203 27206-27207 27209 27211 27213-27217 27219 27221-27222 27227 27234-27237 27241-27245 27247 27251 27260 27262-27263 27268 27273 27276 27278-27281 27284-27285 27287-27288 27295-27298 27301-27302 27306-27307 27310 27317 27319-27320 27322 27325 27327 27329 27331 27336 27338 27340 27344 27360 27362 27367 27379-27380 27390 27392 27395-27396 27399 27401 27404 27408-27409 27414-27418 27420 27422-27423 27429 27433 27438-27442 27444-27445 27447 27451 27453 27455-27456 27458 27463-27464 27466 27473-27474 27476-27477 27479 27481 27483 27488 27492 27496 27503-27504 27508-27509 27511-27513 27540 27550 27555-27557 27559 27561 27565-27568 27570 27572 27574 27577 27580-27582 27588-27589 27591 27596 27603 27608 27610 27612 27614-27618 27624 27631 27633 27641 27644-27645 27648-27649 27652-27654 27659-27660 27662 27668-27670 27682-27683 27685 27688-27689 27693 27696 27704 27708 27712-27714 27716 27719-27721 27724 27726-27729 27733-27737 27739-27742 27745-27747 27750 27752 27754 27756-27758 27761 27764-27765 27767-27768 27770 27784 27805 27807-27809 27811 27820 27822 27824-27825 27828-27830 27832 27835 27838-27839 27844-27845 27847 27850 27855-27856 27858-27859 27862-27863 27866 27868 27870 27872-27874 27876 27879 27882 27905-27906 27908 27910 27912 27914-27915 27917 27919 27925 27927-27928 27932 27935 27940 27942 27945-27948 27951-27952 27957-27959 27964 27966-27968 27973-27974 27976-27978 27981 27983 28005-28006 28017-28019 28028 28030 28033-28038 28041-28042 28044 28046-28047 28053-28054 28057-28061 28064-28065 28067-28069 28081 28093-28094 28096 28108-28109 28116 28120 28123 28129 28133-28134 28136-28137 28139 28144-28145 28151 28154 28160 28162-28163 28165-28166 28168 28170-28171 28174-28175 28177-28181 28183 28185 28187 28192-28193 28195 28207-28208 28210 28213 28221 28226-28227 28232-28234 28239 28249 28251 28255 28261 28263-28264 28266-28267 28270-28271 28275 28282-28286 28292-28293 28297-28298 28301-28303 28309-28311 28316 28318 28320 28322 28325 28329-28330 28332-28333 28337-28338 28345 28358-28359 28364-28365 28368-28369 28371 28374 28376-28378 28384 28387 28390-28391 28393 28397 28401-28404 28406-28407 28409 28411-28412 28415 28423 28426 28429 28431 28437-28441 28443-28445 28447 28463-28464 28466 28469 28471 28475-28477 28479 28488-28489 28492-28494 28497-28498 28503-28505 28508-28510 28513-28515 28517-28520 28522-28523 28540-28541 28549 28553 28562 28565 28567 28569-28570 28572 28574 28584 28586-28587 28596-28597 28599 28604 28606 28609-28614 28619 28622 28624 28626 28629 28632 28634-28635 28642 28650-28651 31050 31087 31091 31142 31144 31150 31163 31166-31167 31183 31185 31210 31295 31303 31317 31322 31328 31330-31331 31337 31359 31371 31374 31380 31392 31398-31399 31401-31404 31406-31408 31410 31423-31425 31430-31431 31434 31436-31438 31441 31444 31446 31448 31450 31457 31459-31462 31465 31468 31473 31475 31478 31480-31481 31484-31485 31487 31490 31492-31493 31495 31498 31500 31502 31504-31506 31528 31531-31533 31535 31539 31544 31546-31547 31553 31558 31560 31567-31568 31571 31574 31592 31604 31611 31618 31621 31623 31625 31627-31629 31631-31632 31636 31640 31642 31649 31652-31653 31655 31659 31664 31666-31667 31673 31677-31681 31690 31692 31695 31702-31703 31707 31709-31710 31713 31716 31718 31728 31731 31733-31734 31737 31739 31742-31743 31770 31774 31785-31786 31797 31805 31843 31873 31881-31882 31897 31901-31903 31907 31909 31921 31924 31927 31932 31934 32269 32273 32276 32280 32284 32287 32292 32299 32301-32303 32306 32310 32312 32315 32323 32326-32327 32329-32330 32334 32345-32347 32352 32356 32365 32368-32369 32371-32372 32374 32392 32400-32401 32404 32408-32409 32411 32415 32437 32439 32474-32475 32485-32486 32491-32492 32494 32496-32497 32505-32506 32510 32549 32554 32556 32607 32648 32671 32675-32676 32691 32694 32702-32704 32706 32713 32730 32735-32736 32738 32740 32743 32751 32755-32756 32759 32763 36711 36717 36723 36729 36804 36811 36816 36820 36846 36857 36859-36860 36863 40934 40943 40954-40955 40957 40959 45035 45050 45052 49105 49109 https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/891/39?format=ascii Optical default J/ApJ/891/39/table5 Cleaned LAMOST DR3 very metal-poor (VMP) star catalog f_[a/Fe] Detection flag on [a/Fe] (2) meta.code char recno Record number assigned by the VizieR team. Should Not be used for identification. meta.record int LAMOST Star name (JHHMMSS.ss+DDMMSS.s) meta.id;meta.main char g0mag [7.78/18.98]? De-reddened g-band magnitude mag phot.mag;em.opt.B float nullable (g-r)0 [-0.19/2.94]? g-r color, de-reddened mag phot.color;em.opt.B;em.opt.R float nullable Teff [3609/7381] Surface effective temperature (1) K phys.temperature.effective int e_Teff [0/424] Uncertainty in Teff (1) K stat.error;phys.temperature.effective int logg [0.14/4.77] log of surface gravity (1) log(cm.s**-2) phys.gravity float e_logg [0/1.3] Uncertainty in logg (1) log(cm.s**-2) stat.error float [Fe/H] [-4.4/-1.8] Metallicty (1) phys.abund.Fe float e_[Fe/H] [0/1.16] Uncertainty in [Fe/H] (1) stat.error;phys.abund.Fe float [C/Fe] [-2.02/4.81] log C/Fe abundance ratio (1) phys.abund float e_[C/Fe] [0.05/1.3] Uncertainty in [C/Fe] stat.error;phys.abund float f_[C/Fe] Detection flag on [C/Fe] (2) meta.code char [a/Fe] [-0.2/0.6]? log {alpha}/Fe abundance ratio (1) phys.abund float nullable e_[a/Fe] [0.02/0.3]? Uncertainty in [a/Fe] stat.error;phys.abund float nullable Gaia Display the Gaia DR2 (I/345) catalog within 2" meta.ref.url char L18 Display data from the LAMOST DR3 VMP star catalog (Li+, 2018, J/ApJS/238/16) meta.ref.url char _RA Positions from names (right ascension part) deg pos.eq.ra;meta.main _DE Positions from names (declination part) deg pos.eq.dec;meta.main