J/ApJ/929/89ivo://CDS.VizieR/J/ApJ/929/89doi:10.26093/cds/vizier.19290089CDSGrillmair C.J.2024-11-06T20:25:09Z2024-04-09T13:02:24ZCDS support team

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

cds-question@unistra.frstellar-associationsgalaxiesproper-motionsphotometrytwo-color-diagramsvisible-astronomyUsing photometry and proper motions from Gaia Early Data Release 3, we detect a 45{deg} long trailing stellar debris stream associated with the old, metal- poor globular cluster NGC 7089. With a width on the order of 100 pc, the extended stream appears to be as dynamically cold as the coldest known streams found to date. There is some evidence for an extended leading tail extending between 28{deg} and 37{deg} from the cluster, though the greater distance of this tail, combined with proper motions that are virtually indistinguishable from those of foreground stars, make the detection much less certain. The proper motion profile and the path on the sky of the trailing tail are not well matched using a simple Galactic potential composed purely of a disk, bulge, and spherical halo. However, the addition of a moving, massive (M=1.88x10^11^M_{sun}_) Large Magellanic Cloud brings the model predictions into much better agreement with the observables. We provide tables of the most highly ranked candidate stream stars for follow-up by ongoing and future spectroscopic surveys.2022ApJ...929...89Ghttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/929/89CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toVII/195 : Globular Clusters in the Milky Way (Harris, 1996)VII/202 : Globular Clusters in the Milky Way (Harris, 1997)I/350 : Gaia EDR3 (Gaia Collaboration, 2020)I/355 : Gaia DR3 Part 1. Main source (Gaia Collaboration, 2022)J/MNRAS/474/2479 : Orbital parameters of globular clusters (Balbinot+, 2018)J/A+A/616/A10 : Open clusters GaiaDR2 HR diagrams (Gaia Collaboration, 2018)J/MNRAS/486/2995 : GD-1 stellar stream (Malhan+, 2019)J/MNRAS/488/1535 : A tidal stream associated with M68 (Palau+, 2019)J/MNRAS/484/2832 : Proper motions of MW globular clusters (Vasiliev, 2019)J/ApJ/914/123 : Gaia DR2 and EDR3 stars with sp. follow-up (Ibata+, 2021)J/MNRAS/505/5978 : Gaia EDR3 view on Gal. globular clusters (Vasiliev+, 2021)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/929/89https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/929/89http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/929/89https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/929/89https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/929/89http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/929/89GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/929/89/stars (Candidate stream stars: trailing tail (Table 1) and leading tail (Table 2))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/929/89/stars?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/929/89/stars?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/929/89/stars?GETtext/xml+votable180.050000true281.2847-16.80270.0055555555555555566/18513 18516 18518-18519 18527 18698 18722 18794-18795 18824 18836 18845-18847 18869 18871 18883 19037 19045 19047 19055 19061 19064-19065 19067-19068 19076 19078-19079 19081-19084 19086 19090 19093 19095-19096 19141 19200 19204 19210 19232 29127 29132 29140 29739 29743 29747 29750 29771 29774-29775 29786 29789 29793-29794 29824 29955 29958 29968-29970 29972 30016 49083 49115 49118-49119 49126-49128 49130-49132 49138-491411.9867573869263685e-19 3.916500758235022e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/929/89?format=asciiOpticaldefaultJ/ApJ/929/89/starsCandidate stream stars: trailing tail (Table 1) and leading tail (Table 2)_RA.icrsRight ascension (ICRS) at Epoch=J2000, proper motions taken into accountdegpos.eq.raindexed_DE.icrsDeclination (ICRS) at Epoch=J2000, proper motions taken into accountdegpos.eq.decindexedrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSeq[1/125] Running sequence numbermeta.id;meta.mainintTailt=trailing or l=leading tailmeta.codecharRA_ICRS[281.2/350] Gaia EDR3 right ascension (ICRS) at Ep=2016degpos.eq.ra;meta.mainDE_ICRS[-17/3] Gaia EDR3 declination (ICRS) at Ep=2016degpos.eq.dec;meta.mainGmag[17.9/20.3] Gaia EDR3 G-band magnitudemagphot.mag;em.optfloatBp-Rp[0.58/1.3] Gaia EDR3 Bp-Rp color indexmagphot.color;em.opt.B;em.opt.RfloatpmRA[0.16/8.5] Gaia EDR3 proper motion in right ascension ({mu}_{alpha}_*cos{delta})mas/yrpos.pm;pos.eq.rafloate_pmRA[0.14/1.2] pmRA uncertaintymas/yrstat.error;pos.pm;pos.eq.rafloatpmDE[-5/-1.2] Gaia EDR3 proper motion in declination ({mu}_{delta}_)mas/yrpos.pm;pos.eq.decfloate_pmDE[0.1/0.9] pmDE uncertaintymas/yrstat.error;pos.pm;pos.eq.decfloatWeight[0.07/1] Relative weightstat.weightfloatGaiaDisplay the Gaia EDR3 and DR3 data within 1"meta.ref.urlchar