J/A+A/665/A8ivo://CDS.VizieR/J/A+A/665/A8doi:10.26093/cds/vizier.36650008CDSKundu R.Navarrete C.Sbordone L.Carballo-Bello J.A.,Fernandez-Trincado J.G.Minniti D.Singh H.P.2022-09-30T23:23:56Z2022-08-31T07:11:48ZCDS support team

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

cds-question@unistra.frglobular-star-clustersproper-motionsapparent-magnitudevisible-astronomyGlobular clusters (GCs) associated with the Sagittarius dwarf spheroidal galaxy (Sgr dSph) have evolved under the gravitational potential of both Sgr dSph and the Milky Way. The effects of these potentials are most pronounced in the extra-tidal regions as compared to the central regions of the GCs.We aim to study the extra-tidal regions of the GCs that are possibly associated with Sgr dSph, namely Arp 2, Terzan 8, NGC 5634, NGC 6284, Terzan 7, NGC 2419, NGC 4147, M 54 and Pal 12, using data from the Gaia early data release 3. We selected the extra-tidal candidates based on their angular distances from the cluster centre in the RA-Dec plane, proper motions of the clusters and the individual extra-tidal star candidates, and their positions on the colour-magnitude diagrams of the clusters. We found extra-tidal candidates for the nine studied GCs. For eight of them, the surface density of candidate extra-tidal stars in the vicinity of the clusters is in significant excess with respect to more distant surrounding fields. No extended extra-tidal features beyond 5 tidal radii were detected for any of the clusters. We publish a list of the most probable extra-tidal candidates that we determined using Gaia astrometric and photometric data. Our analysis shows that the clusters that are associated with Sgr dSph are more likely affected by the gravitational potential of the Sgr, as the distribution of extra-tidal stars is elongated in the same direction as the local stream. NGC 4147 is the only exception. We found some high-probability candidate extra-tidal stars in several of the analysed clusters. We failed to detect any coherent large-scale tidal tail around them.2022A&A...665A...8Khttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/665/A8CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toI/350 : Gaia EDR3 (Gaia Collaboration, 2020)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/665/A8https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/665/A8http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/665/A8https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/665/A8https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/665/A8http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/665/A8GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/665/A8/arp2 (Extra-tidal stars belonging to Arp 2)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/665/A8/arp2?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/665/A8/arp2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/665/A8/arp2?GETtext/xml+votable180.050000true291.767914-30.448090.005555555555555556Cone search capability for table J/A+A/665/A8/m54 (Extra-tidal stars belonging to M 54)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/665/A8/m54?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/665/A8/m54?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/665/A8/m54?GETtext/xml+votable180.050000true283.812927-30.244030.005555555555555556Cone search capability for table J/A+A/665/A8/ngc2419 (Extra-tidal stars belonging to NGC 2419)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/665/A8/ngc2419?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/665/A8/ngc2419?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/665/A8/ngc2419?GETtext/xml+votable180.050000true113.85389738.716701110.005555555555555556Cone search capability for table J/A+A/665/A8/ngc4147 (Extra-tidal stars belonging to NGC 4147)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/665/A8/ngc4147?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/665/A8/ngc4147?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/665/A8/ngc4147?GETtext/xml+votable180.050000true182.38827518.832608890.005555555555555556Cone search capability for table J/A+A/665/A8/ngc5634 (Extra-tidal stars belonging to NGC 5634)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/665/A8/ngc5634?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/665/A8/ngc5634?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/665/A8/ngc5634?GETtext/xml+votable180.050000true216.922455-6.038160.005555555555555556Cone search capability for table J/A+A/665/A8/ngc6284 (Extra-tidal stars belonging to NGC 6284)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/665/A8/ngc6284?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/665/A8/ngc6284?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/665/A8/ngc6284?GETtext/xml+votable180.050000true255.778946-24.854410.005555555555555556Cone search capability for table J/A+A/665/A8/pal12 (Extra-tidal stars belonging to Pal 12)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/665/A8/pal12?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/665/A8/pal12?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/665/A8/pal12?GETtext/xml+votable180.050000true325.565125-21.117580.005555555555555556Cone search capability for table J/A+A/665/A8/terzan7 (Extra-tidal stars belonging to Terzan 7)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/665/A8/terzan7?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/665/A8/terzan7?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/665/A8/terzan7?GETtext/xml+votable180.050000true288.676269-34.653758890.005555555555555556Cone search capability for table J/A+A/665/A8/terzan8 (Extra-tidal stars belonging to Terzan 8)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/665/A8/terzan8?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/665/A8/terzan8?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/665/A8/terzan8?GETtext/xml+votable180.050000true295.061859-34.091918890.0055555555555555565/1597 11975 11979 12111 6/6560 25873 25875-25876 28066-28067 29219 29222 29225 29228 44987 47913 47915 47935 48021 48034-48035 48038 48040-48041 48044 48435 48438-48439 484411.9867573869263685e-19 3.916500758235022e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/665/A8?format=asciiOpticaldefaultJ/A+A/665/A8/arp2Extra-tidal stars belonging to Arp 2_RA.icrsRight ascension (ICRS) at Epoch=J2000, proper motions taken into accountdegpos.eq.ranullableindexed_DE.icrsDeclination (ICRS) at Epoch=J2000, proper motions taken into accountdegpos.eq.decnullableindexedrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRA_ICRSRight ascension (ICRS) at Ep=2016.0degpos.eq.ra;meta.mainDE_ICRSDeclination (ICRS) at Ep=2016.0degpos.eq.dec;meta.mainpmRAProper motion along RA, pmRA*cosDEmas/yrpos.pm;pos.eq.radoublee_pmRArms uncertainty on proper motion along RAmas/yrstat.error;pos.pm;pos.eq.radoublepmDEProper motion along DEmas/yrpos.pm;pos.eq.decdoublee_pmDErms uncertainty on proper motion along DEmas/yrstat.error;pos.pm;pos.eq.decdoubleGmagGaia G magnitudemagphot.mag;em.optdoubleBPmagGaia BP magnitudemagphot.mag;em.opt.BdoubleRPmagGaia RP magnitudemagphot.mag;em.opt.RdoubleGaiaEDR3Gaia EDR3 source_idmeta.id;meta.mainJ/A+A/665/A8/m54Extra-tidal stars belonging to M 54_RA.icrsRight ascension (ICRS) at Epoch=J2000, proper motions taken into accountdegpos.eq.ranullableindexed_DE.icrsDeclination (ICRS) at Epoch=J2000, proper motions taken into accountdegpos.eq.decnullableindexedrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRA_ICRSRight ascension (ICRS) at Ep=2016.0degpos.eq.ra;meta.mainDE_ICRSDeclination (ICRS) at Ep=2016.0degpos.eq.dec;meta.mainpmRAProper motion along RA, pmRA*cosDEmas/yrpos.pm;pos.eq.radoublee_pmRArms uncertainty on proper motion along RAmas/yrstat.error;pos.pm;pos.eq.radoublepmDEProper motion along DEmas/yrpos.pm;pos.eq.decdoublee_pmDErms uncertainty on proper motion along DEmas/yrstat.error;pos.pm;pos.eq.decdoubleGmagGaia G magnitudemagphot.mag;em.optdoubleBPmagGaia BP magnitudemagphot.mag;em.opt.BdoubleRPmagGaia RP magnitudemagphot.mag;em.opt.RdoubleGaiaEDR3Gaia EDR3 source_idmeta.id;meta.mainJ/A+A/665/A8/ngc2419Extra-tidal stars belonging to NGC 2419_RA.icrsRight ascension (ICRS) at Epoch=J2000, proper motions taken into accountdegpos.eq.ranullableindexed_DE.icrsDeclination (ICRS) at Epoch=J2000, proper motions taken into accountdegpos.eq.decnullableindexedrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRA_ICRSRight ascension (ICRS) at Ep=2016.0degpos.eq.ra;meta.mainDE_ICRSDeclination (ICRS) at Ep=2016.0degpos.eq.dec;meta.mainpmRAProper motion along RA, pmRA*cosDEmas/yrpos.pm;pos.eq.radoublee_pmRArms uncertainty on proper motion along RAmas/yrstat.error;pos.pm;pos.eq.radoublepmDEProper motion along DEmas/yrpos.pm;pos.eq.decdoublee_pmDErms uncertainty on proper motion along DEmas/yrstat.error;pos.pm;pos.eq.decdoubleGmagGaia G magnitudemagphot.mag;em.optdoubleBPmagGaia BP magnitudemagphot.mag;em.opt.BdoubleRPmagGaia RP magnitudemagphot.mag;em.opt.RdoubleGaiaEDR3Gaia EDR3 source_idmeta.id;meta.mainJ/A+A/665/A8/ngc4147Extra-tidal stars belonging to NGC 4147pmDEProper motion along DEmas/yrpos.pm;pos.eq.decdouble_RA.icrsRight ascension (ICRS) at Epoch=J2000, proper motions taken into accountdegpos.eq.ranullableindexed_DE.icrsDeclination (ICRS) at Epoch=J2000, proper motions taken into accountdegpos.eq.decnullableindexedrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRA_ICRSRight ascension (ICRS) at Ep=2016.0degpos.eq.ra;meta.mainDE_ICRSDeclination (ICRS) at Ep=2016.0degpos.eq.dec;meta.mainpmRAProper motion along RA, pmRA*cosDEmas/yrpos.pm;pos.eq.radoublee_pmRArms uncertainty on proper motion along RAmas/yrstat.error;pos.pm;pos.eq.radoublee_pmDErms uncertainty on proper motion along DEmas/yrstat.error;pos.pm;pos.eq.decdoubleGmagGaia G magnitudemagphot.mag;em.optdoubleBPmagGaia BP magnitudemagphot.mag;em.opt.BdoubleRPmagGaia RP magnitudemagphot.mag;em.opt.RdoubleGaiaEDR3Gaia EDR3 source_idmeta.id;meta.mainJ/A+A/665/A8/ngc5634Extra-tidal stars belonging to NGC 5634_RA.icrsRight ascension (ICRS) at Epoch=J2000, proper motions taken into accountdegpos.eq.ranullableindexed_DE.icrsDeclination (ICRS) at Epoch=J2000, proper motions taken into accountdegpos.eq.decnullableindexedGaiaEDR3Gaia EDR3 source_idmeta.id;meta.mainrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRA_ICRSRight ascension (ICRS) at Ep=2016.0degpos.eq.ra;meta.mainDE_ICRSDeclination (ICRS) at Ep=2016.0degpos.eq.dec;meta.mainpmRAProper motion along RA, pmRA*cosDEmas/yrpos.pm;pos.eq.radoublee_pmRArms uncertainty on proper motion along RAmas/yrstat.error;pos.pm;pos.eq.radoublepmDEProper motion along DEmas/yrpos.pm;pos.eq.decdoublee_pmDErms uncertainty on proper motion along DEmas/yrstat.error;pos.pm;pos.eq.decdoubleGmagGaia G magnitudemagphot.mag;em.optdoubleBPmagGaia BP magnitudemagphot.mag;em.opt.BdoubleRPmagGaia RP magnitudemagphot.mag;em.opt.RdoubleJ/A+A/665/A8/ngc6284Extra-tidal stars belonging to NGC 6284_RA.icrsRight ascension (ICRS) at Epoch=J2000, proper motions taken into accountdegpos.eq.ranullableindexed_DE.icrsDeclination (ICRS) at Epoch=J2000, proper motions taken into accountdegpos.eq.decnullableindexedrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRA_ICRSRight ascension (ICRS) at Ep=2016.0degpos.eq.ra;meta.mainDE_ICRSDeclination (ICRS) at Ep=2016.0degpos.eq.dec;meta.mainpmRAProper motion along RA, pmRA*cosDEmas/yrpos.pm;pos.eq.radoublee_pmRArms uncertainty on proper motion along RAmas/yrstat.error;pos.pm;pos.eq.radoublepmDEProper motion along DEmas/yrpos.pm;pos.eq.decdoublee_pmDErms uncertainty on proper motion along DEmas/yrstat.error;pos.pm;pos.eq.decdoubleGmagGaia G magnitudemagphot.mag;em.optdoubleBPmagGaia BP magnitudemagphot.mag;em.opt.BdoubleRPmagGaia RP magnitudemagphot.mag;em.opt.RdoubleGaiaEDR3Gaia EDR3 source_idmeta.id;meta.mainJ/A+A/665/A8/pal12Extra-tidal stars belonging to Pal 12_RA.icrsRight ascension (ICRS) at Epoch=J2000, proper motions taken into accountdegpos.eq.ranullableindexed_DE.icrsDeclination (ICRS) at Epoch=J2000, proper motions taken into accountdegpos.eq.decnullableindexedrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRA_ICRSRight ascension (ICRS) at Ep=2016.0degpos.eq.ra;meta.mainDE_ICRSDeclination (ICRS) at Ep=2016.0degpos.eq.dec;meta.mainpmRAProper motion along RA, pmRA*cosDEmas/yrpos.pm;pos.eq.radoublee_pmRArms uncertainty on proper motion along RAmas/yrstat.error;pos.pm;pos.eq.radoublepmDEProper motion along DEmas/yrpos.pm;pos.eq.decdoublee_pmDErms uncertainty on proper motion along DEmas/yrstat.error;pos.pm;pos.eq.decdoubleGmagGaia G magnitudemagphot.mag;em.optdoubleBPmagGaia BP magnitudemagphot.mag;em.opt.BdoubleRPmagGaia RP magnitudemagphot.mag;em.opt.RdoubleGaiaEDR3Gaia EDR3 source_idmeta.id;meta.mainJ/A+A/665/A8/terzan7Extra-tidal stars belonging to Terzan 7_RA.icrsRight ascension (ICRS) at Epoch=J2000, proper motions taken into accountdegpos.eq.ranullableindexed_DE.icrsDeclination (ICRS) at Epoch=J2000, proper motions taken into accountdegpos.eq.decnullableindexedrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRA_ICRSRight ascension (ICRS) at Ep=2016.0degpos.eq.ra;meta.mainDE_ICRSDeclination (ICRS) at Ep=2016.0degpos.eq.dec;meta.mainpmRAProper motion along RA, pmRA*cosDEmas/yrpos.pm;pos.eq.radoublee_pmRArms uncertainty on proper motion along RAmas/yrstat.error;pos.pm;pos.eq.radoublepmDEProper motion along DEmas/yrpos.pm;pos.eq.decdoublee_pmDErms uncertainty on proper motion along DEmas/yrstat.error;pos.pm;pos.eq.decdoubleGmagGaia G magnitudemagphot.mag;em.optdoubleBPmagGaia BP magnitudemagphot.mag;em.opt.BdoubleRPmagGaia RP magnitudemagphot.mag;em.opt.RdoubleGaiaEDR3Gaia EDR3 source_idmeta.id;meta.mainJ/A+A/665/A8/terzan8Extra-tidal stars belonging to Terzan 8_RA.icrsRight ascension (ICRS) at Epoch=J2000, proper motions taken into accountdegpos.eq.ranullableindexed_DE.icrsDeclination (ICRS) at Epoch=J2000, proper motions taken into accountdegpos.eq.decnullableindexedrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRA_ICRSRight ascension (ICRS) at Ep=2016.0degpos.eq.ra;meta.mainDE_ICRSDeclination (ICRS) at Ep=2016.0degpos.eq.dec;meta.mainpmRAProper motion along RA, pmRA*cosDEmas/yrpos.pm;pos.eq.radoublee_pmRArms uncertainty on proper motion along RAmas/yrstat.error;pos.pm;pos.eq.radoublepmDEProper motion along DEmas/yrpos.pm;pos.eq.decdoublee_pmDErms uncertainty on proper motion along DEmas/yrstat.error;pos.pm;pos.eq.decdoubleGmagGaia G magnitudemagphot.mag;em.optdoubleBPmagGaia BP magnitudemagphot.mag;em.opt.BdoubleRPmagGaia RP magnitudemagphot.mag;em.opt.RdoubleGaiaEDR3Gaia EDR3 source_idmeta.id;meta.main