J/MNRAS/495/4113ivo://CDS.VizieR/J/MNRAS/495/4113doi:10.26093/cds/vizier.74954113CDSFernandez-Trincado J.G.Chaves-Velasquez L.Perez-Villegas A.Vieira K.,Moreno E.Ortigoza-Urdaneta M.Vega-Neme L.2025-05-22T20:15:49Z2023-09-14T14:42:34ZCDS support team

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

cds-question@unistra.frmilky-way-galaxygiant-starsstellar-distanceradial-velocityproper-motionsinfrared-astronomyspectroscopyvisible-astronomyWe have used the galaxy modelling algorithm GRAVPOT16, to explore the most probable orbital elements of a sample of 64 selected N-rich stars across the Milky Way. We use the newly measured proper motions from Gaia Data Release 2 with existing line-of-sight velocities from the second generation of the Apache Point Observatory Galactic Evolution Experiment (APOGEE-2) and spectrophotometric distance estimations from STARHORSE. We adopted a set of high-resolution particle simulations evolved in the same steady-state Galactic potential model with a bar, in order to identify the groups of N-rich stars that have a high probability of belonging to the bulge/bar, disc and stellar halo component. We find that the vast majority of the N-rich stars show typically maximum height from the Galactic plane below 3kpc, and develop eccentric orbits (e>0.5), which means that these stars appear to have bulge/bar-like and/or halo-like orbits. We also show that ~66 per cent of the selected N-rich stars currently reside in the inner Galaxy inside the corotation radius, whilst ~14 per cent are in halo-like orbits. Among the N-rich stars in the inner Galaxy, ~27 per cent share orbital properties in the boundary between bulge/bar and disc, depending on the bar pattern speeds. Our dynamical analysis also indicates that some of the N-rich stars are likely to be halo interlopers, which suggests that halo contamination is not insignificant within the bulge area.2020MNRAS.495.4113Fhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/495/4113CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toI/345 : Gaia DR2 (Gaia Collaboration, 2018)III/284 : APOGEE-2 data from DR16 (Johnsson+, 2020)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/495/4113https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/495/4113http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/495/4113https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/495/4113https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/495/4113http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/495/4113GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/495/4113/table1 (Data for the N-rich stars)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/495/4113/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/495/4113/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/495/4113/table1?GETtext/xml+votable180.050000true268.497688147.13588860.0055555555555555566/3229 9180 9599 9708 26196 27862 28727 28759 28764 28770 28778-28780 28794 28820 28823 28826 28837 28843 28848 28850-28851 28853-28855 28858-28859 28862 28869 28898 28905 28909-28911 28923 29092 29188 29190 29199 29210 29212-29213 29221 29248 29285 29317 29324 29326 29458 29468 30858 30860 31410 47871 48035https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/495/4113?format=asciiOpticalInfrareddefaultJ/MNRAS/495/4113/table1Data for the N-rich starsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSimbadSimbad column added by the CDSmeta.ref.urlcharNameStar name (2MHHMMSSss+DDMMSSs)meta.id;meta.maincharDistDistancekpcpos.distancefloate_DistError on Distkpcstat.errorfloatRVRadial velocitykm/sphys.veloc;pos.heliocentricfloate_RVError on RVkm/sstat.errorfloatpmRAProper motion in right ascensionmas/yrpos.pm;pos.eq.rafloate_pmRAError on pmRAmas/yrstat.error;pos.pm;pos.eq.rafloatpmDEProper motion in declinationmas/yrpos.pm;pos.eq.decfloate_pmDEError on pmDEmas/yrstat.error;pos.pm;pos.eq.decfloatRefSource catalogue (1)meta.bibchar_RARight Ascension (J2000) from SIMBAD (not part of the original data)degpos.eq.ra;meta.main_DEDeclination (J2000) from SIMBAD (not part of the original data)degpos.eq.dec;meta.mainJ/MNRAS/495/4113/table2Orbital elements of selected N-rich stars for {Omega}_bar_=43km/s/kpcrapoApogalactic distancekpcpos.distance;pos.galactocentricfloats_rperiStandard deviation of rperi (2)kpcstat.stdevfloatrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameStar name (2MHHMMSSss+DDMMSSs)meta.id;meta.maincharRUWERenormalized unit weight errorstat.errorfloatZmaxMaximum distance from the galactic planekpcpos.cartesian.z;pos.galacticfloate_ZmaxError on Zmax (1)kpcstat.errorfloats_ZmaxStandard deviation of Zmax (2)kpcstat.stdevfloatrperiPerigalactic distancekpcpos.distance;pos.galactocentricfloate_rperiError on rperi (1)kpcstat.errorfloate_rapoError on rapo (1)kpcstat.errorfloats_rapoStandard deviation of rapo (2)kpcstat.stdevfloateEccentricitysrc.orbital.eccentricityfloate_eError on e (1)stat.errorfloats_eStandard deviation of e (2)stat.stdevfloatEjOrbital Jacobi constant100km**2.s**2src.orbitaldoublee_EjError on Ej (1)100km**2.s**2stat.errorfloats_EjStandard deviation of Ej (2)100km**2.s**2stat.stdevfloatEcharCharacteristic orbital energy as envisioned by Moreno, Pichardo & Schuster (2015MNRAS.451..705M)100km**2.s**2src.orbitaldoublee_EcharError on Echar (1)100km**2.s**2stat.errorfloats_EcharStandard deviation of Echar (2)100km**2.s**2stat.stdevfloatLzminMinimum of the z-component of the angular momentum in the inertial frame10km.kpc/sphys.angMomentumfloate_LzminError on Lzmin (1)10km.kpc/sstat.errorfloats_LzminStandard deviation of Lzmin (2)10km.kpc/sstat.stdevfloatLzmaxMaximum of the z-component of the angular momentum in the inertial frame10km.kpc/sphys.angMomentumfloate_LzmaxError on Lzmax (1)10km.kpc/sstat.errorfloats_LzmaxStandard deviation of Lzmax (2)10km.kpc/sstat.stdevfloatOrbitOrbital behavioursrc.classcharJ/MNRAS/495/4113/table3Membership probability for different bar pattern speedsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameStar name (2MHHMMSSss+DDMMSSs)meta.id;meta.maincharPbar33Bulge/bar membership probability for {Omega}_bar_=33km/s/kpc%stat.probabilityfloatPdisc33Disc membership probability for {Omega}_bar_=33km/s/kpc%stat.probabilityfloatPhalo33Halo membership probability for {Omega}_bar_=33km/s/kpc%stat.probabilityfloatPbar43Bulge/bar membership probability for {Omega}_bar_=43km/s/kpc%stat.probabilityfloatPdisc43Disc membership probability for {Omega}_bar_=43km/s/kpc%stat.probabilityfloatPhalo43Halo membership probability for {Omega}_bar_=43km/s/kpc%stat.probabilityfloatPbar53Bulge/bar membership probability for {Omega}_bar_=53km/s/kpc%stat.probabilityfloatPdisc53Disc membership probability for {Omega}_bar_=53km/s/kpc%stat.probabilityfloatPhalo53Halo membership probability for {Omega}_bar_=53km/s/kpc%stat.probabilityfloat