J/ApJ/933/151ivo://CDS.VizieR/J/ApJ/933/151doi:10.26093/cds/vizier.19330151CDSZhang Z.Shi W.B.Chen Y.Q.Zhao G.Carrell K.Zhang H.P.2025-03-03T20:11:11Z2025-01-10T12:54:09ZCDS support team

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

cds-question@unistra.frstellar-associationsgiant-starsvisible-astronomymetallicityradial-velocityproper-motionsWe investigated the observational properties of Triangulum-Andromeda (TriAnd), Monoceros Ring (MRi), and Anti-Center Stream (ACS) in the anticenter region using K giants, M giants, and RGB stars from LAMOST and SDSS survey. The Friends of Friends algorithm was applied to select member stars of these structures. We found a new spur of TriAnd at l~133deg based on member stars selected in this work and compiled from the literature. The distributions of radial velocity and proper motion of its member stars indicate that TriAnd is gradually moving away from the Sun. The comparisons of [Fe/H] and [{alpha}/Fe] between TriAnd and thick-disk/halo stars reveal that TriAnd is likely to originate from the thick disk. MRi and ACS are adjacent in space with a boundary around latitude 30deg, and there is no significant difference between the two structures in velocity, proper motions, and orbits. We suggested that MRi and ACS probably have a common origin. We made projections of the four structures in three-dimensional space for the exploration of the movements between the Sagittarius (Sgr) stellar stream and MRi, and found that a new spur was formed by the Sgr stream members in the velocity distribution as it passed through the MRi region.2022ApJ...933..151Zhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/933/151CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toII/246 : 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)VII/269 : SDSS Quasar Catalog, DR9Q (Paris+, 2012)I/345 : Gaia DR2 (Gaia Collaboration, 2018)V/164 : LAMOST DR5 catalogs (Luo+, 2019)J/ApJ/588/824 : Velocities of blue stars near (l,b)=(198,-27) (Yanny+, 2003)J/A+A/548/A66 : SDSS Quasar Catalog, DR9Q (Paris+, 2012)J/ApJ/751/130 : SDSS-DR7 red HB stars spectroscopic data (Shi+, 2012)J/ApJ/795/52 : Red giant star sample from SDSS (Chen+, 2014)J/ApJ/793/62 : Triangulum-Andromeda stellar properties (Sheffield+, 2014)J/ApJ/794/60 : SDSS RGB stars distances (Tan+, 2014)J/ApJ/798/110 : Equivalent widths of LAMOST metal-poor stars (Li+, 2015)J/ApJ/816/80 : The SEGUE K giant survey. III. Galactic halo (Janesh+, 2016)J/ApJ/823/59 : WISE and 2MASS photometry of M giant stars (Li+, 2016)J/ApJ/859/L8 : Properties of TriAnd stars (Hayes+, 2018)J/ApJ/854/47 : RRab of Monoceros Ring & A13 overdensities (Sheffield+, 2018)J/ApJ/877/13 : Member stars of the GD-1 tidal stream (Huang+, 2019)J/ApJ/874/138 : Gaia and LAMOST DR4 M giant members of Sgr stream (Li+, 2019)J/ApJS/245/34 : Abundances for 6 million stars from LAMOST DR5 (Xiang+, 2019)J/ApJ/880/65 : LAMOST K giants in Galactic halo substructures (Yang+, 2019)J/ApJS/246/9 : Stellar parameters of LAMOST stars using SLAM (Zhang+, 2020)J/ApJ/910/46 : Galactic anticenter substructure stars from LAMOST (Li+, 2021)J/A+A/646/A99 : Gaia DR2 Monoceros and ACS candidates (Ramos+, 2021)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/933/151https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/933/151http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/933/151https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/933/151https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/933/151http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/933/151GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/933/151/table2 (Member stars of TriAnd)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/933/151/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/933/151/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/933/151/table2?GETtext/xml+votable180.050000true21.79938.7810.005555555555555556Cone search capability for table J/ApJ/933/151/table3 (Member stars of ACS)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/933/151/table3?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/933/151/table3?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/933/151/table3?GETtext/xml+votable180.050000true130.3552.6970.005555555555555556Cone search capability for table J/ApJ/933/151/table4 (Member Stars of MRi)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/933/151/table4?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/933/151/table4?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/933/151/table4?GETtext/xml+votable180.050000true93.87138.6950.0055555555555555565/1587 1641 6/442 507 800 820 822 825 835 864 866 871 874 887 909 914 916 919 923-925 956-957 962 965 971 973 977 986-987 992 997 1004 1008 1012 1186 1568 2247 2259 2269-2271 2291 2295 2297 2300 2325 2331 2356 2358 2364 2367-2368 2371 2374 2376 2380 2400-2401 2403-2404 2406 2410 2413 2432-2433 2438 2443-2444 2449-2451 2456-2457 2459 2464-2465 2479 2482 2484-2485 2487 2492-2493 2496 2505 2528-2529 2615 2617 2643 2647-2648 2650 2658 2666-2667 2674 2685 2692 2741 2760 2784 2816 2821-2823 4737 4745 4770 4783 6146 6159 6179 6193 6195 6198 6202 6207 6248 6250-6251 6255 6258 6275 6281 6292 6300-6301 6316-6317 6326 6342 6345 6352 6355 6365 6369-6370 6375 6392-6394 6452-6454 6474 6499 6501-6502 6507 6510 6530 6532 6534 6537-6539 6541 6544 6560-6561 6563 6589 6594 6597 6601 6603 6607-6608 6610-6612 6614 6616 6621 6623 6626 6632-6633 6636 6638-6640 6647 6652-6653 6705 6762 6794 6868 6899 6924 6939 6990-6991 6993 6996 6998 7005 7113 7193 7303 7314 7321 7329 7331-7332 7335 7340 7346 7358 7370 7686-7687 7698 7705 7723 22335 22484 23832 23868 24026 24053https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/933/151?format=asciiOpticaldefaultJ/ApJ/933/151/table2Member stars of TriAndSeq[1/128] Sequential numbermeta.id;meta.mainintrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRAJ2000Right Ascension, decimal degrees (J2000)degpos.eq.ra;meta.mainDEJ2000Declination, decimal degree (J2000)degpos.eq.dec;meta.mainDist[11.7/25.1] Heliocentric distancekpcpos.distance;pos.heliocentricfloatHRV[-169/-31.9] Heliocentric radial velocitykm/sspect.dopplerVeloc;pos.heliocentricfloatGLONGalactic Longitudedegpos.galactic.lonGLATGalactic Latitudedegpos.galactic.latfloat[Fe/H][-1.54/0.54] Log of Fe/H abundancephys.abund.FefloatXgcGalactic coordinate, X (G1)kpcpos.cartesian.x;pos.galacticfloatYgcGalactic coordinate, Y (G1)kpcpos.cartesian.y;pos.galacticfloatZgcGalactic coordinate, Z (G1)kpcpos.cartesian.z;pos.galacticfloatVgsr[0.9/103] Galactic standard of rest velocitykm/sphys.veloc;pos.galacticfloatpmGLONProper motion in galactic longitudemas/yrpos.pm;pos.galactic.lonfloatpmGLATProper motion in galactic latitudemas/yrpos.pm;pos.galactic.latfloatL[3519/6554] Angular momentumkpc.km/sphys.angMomentumfloatE[-97282/-67169] Energykm**2.s**-2phys.energydoubleXgc2Arrow's end point galactic coordinate, X in Fig 15 (G1)kpcpos.galacticdoubleYgc2Arrow's end point galactic coordinate, Y in Fig 15 (G1)kpcpos.galacticfloatZgc2Arrow's end point galactic coordinate, Z in Fig 15 (G1)kpcpos.galacticdoubleTypeClassification of star (1)src.classcharJ/ApJ/933/151/table3Member stars of ACSZgc2Arrow's end point galactic coordinate, Z in Fig 15 (G1)kpcpos.galacticdoublerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSeq[1/32] Sequential numbermeta.id;meta.mainintRAJ2000Right Ascension, decimal degrees (J2000)degpos.eq.ra;meta.mainDEJ2000Declination, decimal degree (J2000)degpos.eq.dec;meta.mainDist[7.4/12.6] Heliocentric distancekpcpos.distance;pos.heliocentricfloatHRV[-1.8/30.1] Heliocentric radial velocitykm/sspect.dopplerVeloc;pos.heliocentricfloat[Fe/H][-1.06/-0.43] Log of Fe/H abundancephys.abund.FefloatGLONGalactic Longitudedegpos.galactic.lonGLATGalactic Latitudedegpos.galactic.latfloatXgcGalactic coordinate, X (G1)kpcpos.cartesian.x;pos.galacticfloatYgcGalactic coordinate, Y (G1)kpcpos.cartesian.y;pos.galacticfloatZgcGalactic coordinate, Z (G1)kpcpos.cartesian.z;pos.galacticfloatVgsr[-3/72.6]Galactic standard of rest velocitykm/sphys.veloc;pos.galacticfloatpmGLONProper motion in galactic longitudemas/yrpos.pm;pos.galactic.lonfloatpmGLATProper motion in galactic latitudemas/yrpos.pm;pos.galactic.latfloatL[3067/4255] Angular momentumkpc.km/sphys.angMomentumfloatE[-106557/-89631] Energykm**2.s**-2phys.energydoubleXgc2Arrow's end point galactic coordinate, X in Fig 15 (G1)kpcpos.galacticdoubleYgc2Arrow's end point galactic coordinate, Y in Fig 15 (G1)kpcpos.galacticdoubleTypeClassification of star (1)src.classcharJ/ApJ/933/151/table4Member Stars of MRiDEJ2000Declination, decimal degree (J2000)degpos.eq.dec;meta.mainDist[9.9/20.1] Heliocentric distancekpcpos.distance;pos.heliocentricfloatSeq[1/132] Sequential numbermeta.id;meta.mainintrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRAJ2000Right Ascension, decimal degrees (J2000)degpos.eq.ra;meta.mainHRV[-67/105] Heliocentric radial velocitykm/sspect.dopplerVeloc;pos.heliocentricfloatGLONGalactic Longitudedegpos.galactic.lonGLATGalactic Latitudedegpos.galactic.latfloat[Fe/H][-1.25/-0.05] Log of Fe/H abundancephys.abund.FefloatXgcGalactic coordinate, X (G1)kpcpos.cartesian.x;pos.galacticfloatYgcGalactic coordinate, Y (G1)kpcpos.cartesian.y;pos.galacticfloatZgcGalactic coordinate, Z (G1)kpcpos.cartesian.z;pos.galacticfloatVgsr[-48/66.4] Galactic standard of rest velocitykm/sphys.veloc;pos.galacticfloatpmGLONProper motion in galactic longitudemas/yrpos.pm;pos.galactic.lonfloatpmGLATProper motion in galactic latitudemas/yrpos.pm;pos.galactic.latfloatL[3543/5522] Angular momentumkpc.km/sphys.angMomentumfloatE[-98486/-76046] Energykm**2.s**-2phys.energydoubleXgc2Arrow's end point galactic coordinate, X in Fig 15 (G1)kpcpos.galacticdoubleYgc2Arrow's end point galactic coordinate, Y in Fig 15 (G1)kpcpos.galacticdoubleZgc2Arrow's end point galactic coordinate, Z in Fig 15 (G1)kpcpos.galacticdoubleTypeClassification of star (1)src.classchar