J/A+A/684/A205ivo://CDS.VizieR/J/A+A/684/A205doi:10.26093/cds/vizier.36840205CDSXu C.Tang B.Li C.Fernandez-Trincado J.GZhong J.Wang L.Tian H.,Huang Y.2024-11-07T20:02:33Z2024-04-25T08:23:27ZCDS support team

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

cds-question@unistra.frglobular-star-clustersstellar-populationsradial-velocitymetallicityGlobular clusters (GCs), as old as our Galaxy, constantly lose their members to the field as they cross through the Milky Way (MW). These GC escaped stars (or escapees) are suggested to contribute significantly to the MW halo. If a star has left the host GC a long time ago, chemical finger prints, e.g., N enrichment, may reveal its origin. In this work, we aim to establish dynamical connections between N-rich field stars recently identified by LAMOST and the existing MW GCs. By constructing the full action distribution, and combining with metallicity, we found 29 potential GC progenitors for 15 N-rich field stars. Particularly, some of them may be related to MW accretion events. On the other hand, if a star recently left its host GC via tidal evaporation, it still maintain the kinematic properties of the cluster. Here we identify extra-tidal candidates based on their spatial locations, proper motions (PMs), and their position on color-magnitude-diagrams (CMDs). We successfully identified more than 1600 extra-tidal candidates in the vicinity of six Gaia-Enceladus (GE)-related GCs (i.e., NGC 1851, NGC 1904, NGC 6205, NGC 6341, NGC 6779, NGC 7089). The density map of the extra-tidal candidates is confirmed to be an efficient way to find extra-tidal structures. The possible two density peaks at opposite directions of the inner boundary is a good indicator for long stellar stream. Among 95 extra-tidal candidates with spectroscopic radial velocities and metallicity, 54 of them are confirmed to be GC escaped stars, as they share similar properties as host GCs. These extra-tidal candidates are ideal targets for follow-up spectroscopic observation, as it greatly improves the scientific outcome. Once statistically significant number of spectroscopic radial velocities and metallicities are available, the GC dynamical evolution (e.g., mass loss, rotation) can be carefully investigated.2024A&A...684A.205Xhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/684/A205CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toI/350 : Gaia EDR3 (Gaia Collaboration, 2020)I/355 : Gaia DR3 Part 1. Main source (Gaia Collaboration, 2022)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/684/A205https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/684/A205http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/684/A205https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/684/A205https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/684/A205http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/684/A205GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/684/A205/table4 (Identified extra-tidal stars from Method IIork)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/684/A205/table4?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/684/A205/table4?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/684/A205/table4?GETtext/xml+votable180.050000true78.609345-39.80916580.0055555555555555566/9431 9436 9460 9623 9664 9666 19089-19091 34242-34243https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/684/A205?format=asciidefaultJ/A+A/684/A205/table4Identified extra-tidal stars from Method IIorkSimbadSimbad column added by the CDSmeta.ref.urlchar_RAPositions from Gaia EDR3 (right ascension part)degpos.eq.ra;meta.main_DEPositions from Gaia EDR3 (declination part)degpos.eq.dec;meta.mainGaiaEDR3Gaia EDR3 id of this starmeta.id;meta.maincharGCGlobular cluster namemeta.id.parentcharRVRadial velocitykm/sphys.veloc;pos.heliocentricfloat[Fe/H]? Metallicityphys.abund.ZfloatnullableSourceSpectra from which surveymeta.bibcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordint