J/ApJ/874/74ivo://CDS.VizieR/J/ApJ/874/74CDSLi H.Du C.Liu S.Donlon T.Newberg H.J.2024-10-04T08:04:41Z2023-10-27T07:41:31ZCDS support team

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

cds-question@unistra.frhalo-starsmilky-way-galaxystellar-associationsmetallicityvisible-astronomyspectroscopysurveysBased on the second Gaia data release and spectroscopy from the Large Sky Area Multi-Object Fiber Spectroscopic Telescope Data, we identified 20,089 halo stars kinematically and chemically. The halo streams in the solar neighborhood could be detected in the space of energy and angular momentum. We reshuffle the velocities of these stars to determine the significance of substructure. Finally, we identify four statistically significant substructures that are labeled GL-1 through 4. Among these substructures, GL-1 is a previously known stream ("N2" stream), and the other three substructures are new. These substructures may be the debris of dwarf galaxy accretion event; their dynamical and chemical information can help us to understand the history of the Milky Way.2019ApJ...874...74Lhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/874/74CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toV/146 : LAMOST DR1 catalogs (Luo+, 2015)I/345 : Gaia DR2 (Gaia Collaboration, 2018)I/347 : Distances to 1.33 billion stars in Gaia DR2 (Bailer-Jones+, 2018)V/164 : LAMOST DR5 catalogs (Luo+, 2019)I/355 : Gaia DR3 Part 1. Main source (Gaia Collaboration, 2022)J/A+A/410/527 : Abundances in the Galactic disk (Bensby+, 2003)J/A+A/430/165 : Radial velocities for 6691 K and M giants (Famaey+, 2005)J/AJ/134/1579 : Halo stars in solar neighborhood (Kepley+, 2007)J/ApJ/698/865 : Halo streams in the SDSS-DR7 (Klement+, 2009)J/other/RAA/11.924 : Atmospheric parameters for 771 stars (Wu+, 2011)J/A+A/566/A118 : A comprehensive view of Virgo stellar stream (Duffau+, 2014)J/A+A/583/A76 : Omega Cen candidates RAVE-selected (Fernandez-Trincado+, 2015)J/other/RAA/17.62 : Candidate members of 4 stellar streams (Li+, 2017)J/AJ/156/90 : New cat. of APOGEE RV standard stars (Huang+, 2018)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/874/74https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/874/74http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/874/74https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/874/74https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/874/74http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/874/74GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/874/74/members (GL-2 (Table 2), GL-3 (Table 3) and GL-4 (Table 4) member stars)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/874/74/members?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/874/74/members?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/874/74/members?GETtext/xml+votable180.050000true207.0564583-0.68011110.0055555555555555566/111 277 279 387 676 700 749 948 996 1185 1543 1687 2072 2123 2257 2277 2665 2710 2824 4112 4163 4166 4254 4256 4293 4302 4351 4473 4602 4613 4687 4806 4869 4875 4911 5052 5127 5132 5142 5162 5235 5263 5312 5405 5516 5582-5583 5588 5605 5618 5714 5873 5885-5886 5891 5908 5917 5943 5987 6284 6311 6338 6348 6482 6510 6592 6630 6925 7217 7268 7279 7319 8479 8636 8748 8858 8865 8902 8985 9084 9106 9129 9131 9141 9151 9190 9269 9301 9432 9463 9494 9652 9676-9677 9781 9790 9821 9855 9974 10054 10355 10376 10379 10385 10500 10540 10550 10600 10606 10611 10761 10814 10818 10836 10895 10961 10973 10981-10982 11045 11087 11164 11214 11291-11292 11297 11302 11350 11369 11459 12306 12359 12369 12506 12754 13250 13457 13554 13779 14577 14579 14866 14969 15045 15068 15139 15147 15246 15272 15278 17785 17845 17912 18121 18246 18853 19218 19422 19440 19512 19520 19528 19597 19904 19933 19948 20076 20099 20150 20350 20353-20354 21777 21834 21839 21957 22013 22310 22420 23876 24024 24091 24147 25809 26020 26106 26245 26297-26298 26368 26429 26488 26499 26533 27139 27164 27281 27319 27417 27446 27483 27566 27601 27609 27615 27657 27661 27829 28031 28036 28102 28122 28203 28301 28305 28320 28407 28469 28489-28490 28492 28494 28501 28519 28550 28589 28622 28634 31038 31167 31203 31324 31426 31459 31596 31630 31640 31774 31982 32279https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/874/74?format=asciiOpticaldefaultJ/ApJ/874/74/membersGL-2 (Table 2), GL-3 (Table 3) and GL-4 (Table 4) member starsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordint[Fe/H][-2.25/0.23] Metallicityphys.abund.ZfloatX[3.8/13] Galactocentric x coordinatekpcpos.cartesian.x;pos.galactocentricfloatY[-6/3.6] Galactocentric y coordinatekpcpos.cartesian.y;pos.galactocentricfloatZ[-3.2/5.2] Galactocentric z coordinatekpcpos.cartesian.z;pos.galactocentricfloatU[-254/253] U component of space velocitykm/sphys.veloc;pos.cartesian.xfloatV[-216/136] V component of space velocitykm/sphys.veloc;pos.cartesian.yfloatW[-197/208] W component of space velocitykm/sphys.veloc;pos.cartesian.zfloatLz[-536/1073] z-angular momentumkm.s**-1.kpcphys.angMomentumfloatSimbadSimbad column added by the CDSmeta.ref.urlchar_RAPositions from LAMOST names (right ascension part)degpos.eq.ra;meta.main_DEPositions from LAMOST names (declination part)degpos.eq.dec;meta.mainStreamStellar stream identifiermeta.id.parentcharGaiaGaia DR2 identifiermeta.id.crossObsID[7013119/576315040] LAMOST DR5 obsIDmeta.notelongGLONGalactic longitudedegpos.galactic.lonGLAT[-61/88] Galactic latitudedegpos.galactic.latfloatLAMOSTLAMOST name (JHHMMSS.ss+DDMMSS.s)meta.id;meta.mainchar