J/A+A/663/A107ivo://CDS.VizieR/J/A+A/663/A107doi:10.26093/cds/vizier.36630107CDSSchmidt T.Cioni M.-R.Niederhofer F.Bekki K.Bell C.P.M.de Grijs R.,El Youssoufi D.Ivanov V.OliveiraJ.M.Ripepi V.van Loon J.T.2022-11-13T17:14:46Z2022-07-18T06:52:34ZCDS support team

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

cds-question@unistra.frmagellanic-cloudsstellar-associationsproper-motionsvisible-astronomyThe Large Magellanic Cloud (LMC) is the most luminous satellite galaxy of the Milky Way and, owing to its companion, the Small Magellanic Cloud (SMC), represents an excellent laboratory to study the interaction of dwarf galaxies. The aim of this study is to investigate the kinematics of the outer regions of the LMC by using stellar proper motions to understand the impact of interactions, e.g. with the SMC about 250Myr ago. We calculate proper motions using multi-epoch Ks-band images from the VISTA survey of the Magellanic Clouds system. Observations span a time baseline of 2-5yr. We combine the VMC data with data from the Gaia early Data Release 3 and introduce a new method to distinguish between Magellanic and Milky Way stars based on a machine learning algorithm. This new technique enables a larger and cleaner sample selection of fainter sources as it reaches below the red clump of the LMC. We investigate the impact of the SMC on the rotational field of the LMC and find hints of stripped SMC debris. The south-eastern region of the LMC shows a slow rotational speed compared to the overall rotation. N-body simulations suggest that this could be caused by a fraction of stripped SMC stars located in that particular region that move opposite to the expected rotation.2022A&A...663A.107Shttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/663/A107CatalogResearchIsServedByTAP 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/663/A107https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/663/A107http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/663/A107https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/663/A107https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/663/A107http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/663/A107GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/663/A107/table5 (Gaia EDR3 proper motion of LMC stars)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/663/A107/table5?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/663/A107/table5?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/663/A107/table5?GETtext/xml+votable180.050000true84.38788194-74.999303890.005555555555555556Cone search capability for table J/A+A/663/A107/table6 (Gaia EDR3 proper motion of old stars)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/663/A107/table6?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/663/A107/table6?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/663/A107/table6?GETtext/xml+votable180.050000true84.37070694-74.999241940.005555555555555556Cone search capability for table J/A+A/663/A107/table7 (Gaia EDR3 proper motion of young stars)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/663/A107/table7?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/663/A107/table7?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/663/A107/table7?GETtext/xml+votable180.050000true84.412245-75.015063890.005555555555555556Cone search capability for table J/A+A/663/A107/table8 (VMC proper motion of LMC stars)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/663/A107/table8?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/663/A107/table8?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/663/A107/table8?GETtext/xml+votable180.050000true84.38788194-74.999303890.0055555555555555565/8258-8262 8264-8265 8277-8279 8281 8284 8448 9354 9376 9378 9384 9386 6/32885 33029-33031 33052 33069 33072 33074-33075 33078-33081 33084-33085 33087-33088 33092-33093 33103-33105 33107 33122-33123 33128-33130 33132-33133 33140-33141 33796 33798-33802 33824 37386 37410 37510 37516 37518 37540 37542 38912-38914 38920https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/663/A107?format=asciiOpticaldefaultJ/A+A/663/A107/table5Gaia EDR3 proper motion of LMC starsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintBinBin number as created by the Voronoi routineem.binintRA_ICRSRight ascension (ICRS) at Ep=2016.0 of the bin centre (Gaia EDR3)degpos.eq.ra;meta.mainDE_ICRSDeclination (ICRS) at Ep=2016.0 of the bin centre (Gaia EDR3)degpos.eq.dec;meta.maindAngular distance from the LMC centredegpos.angDistancefloatNNumber of sourcesmeta.numberint_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.decnullableindexedpmRAProper motion in Right ascensionmas/yrpos.pm;pos.eq.rafloate_pmRAProper motion error in Right ascensionmas/yrstat.error;pos.pm;pos.eq.rafloatpmDEProper motion in Declinationmas/yrpos.pm;pos.eq.decfloate_pmDEProper motion error in Declinationmas/yrstat.error;pos.pm;pos.eq.decfloatVRRotational velocity with respect to LMC centrekm/sphys.veloc.rotatfloate_VRRotational velocity errorkm/sstat.errorfloatJ/A+A/663/A107/table6Gaia EDR3 proper motion of old stars_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.recordintBinBin number as created by the Voronoi routineem.binintRA_ICRSRight ascension (ICRS) at Ep=2016.0 of the bin centre (Gaia EDR3)degpos.eq.ra;meta.mainDE_ICRSDeclination (ICRS) at Ep=2016.0 of the bin centre (Gaia EDR3)degpos.eq.dec;meta.maindAngular distance from the LMC centredegpos.angDistancefloatNNumber of sourcesmeta.numberintpmRAProper motion in Right ascensionmas/yrpos.pm;pos.eq.rafloate_pmRAProper motion error in Right ascensionmas/yrstat.error;pos.pm;pos.eq.rafloatpmDEProper motion in Declinationmas/yrpos.pm;pos.eq.decfloate_pmDEProper motion error in Declinationmas/yrstat.error;pos.pm;pos.eq.decfloatVRRotational velocity with respect to LMC centrekm/sphys.veloc.rotatfloate_VRRotational velocity errorkm/sstat.errorfloatJ/A+A/663/A107/table7Gaia EDR3 proper motion of young starse_VRRotational velocity errorkm/sstat.errorfloat_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.recordintBinBin number as created by the Voronoi routineem.binintRA_ICRSRight ascension (ICRS) at Ep=2016.0 of the bin centre (Gaia EDR3)degpos.eq.ra;meta.mainDE_ICRSDeclination (ICRS) at Ep=2016.0 of the bin centre (Gaia EDR3)degpos.eq.dec;meta.maindAngular distance from the LMC centredegpos.angDistancefloatNNumber of sourcesmeta.numberintpmRAProper motion in Right ascensionmas/yrpos.pm;pos.eq.rafloate_pmRAProper motion error in Right ascensionmas/yrstat.error;pos.pm;pos.eq.rafloatpmDEProper motion in Declinationmas/yrpos.pm;pos.eq.decfloate_pmDEProper motion error in Declinationmas/yrstat.error;pos.pm;pos.eq.decfloatVRRotational velocity with respect to LMC centrekm/sphys.veloc.rotatfloatJ/A+A/663/A107/table8VMC proper motion of LMC starsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintBinBin number as created by the Voronoi routineem.binintRA_ICRSRight ascension (ICRS) at Ep=2016.0 of the bin centre (Gaia EDR3)degpos.eq.ra;meta.mainDE_ICRSDeclination (ICRS) at Ep=2016.0 of the bin centre (Gaia EDR3)degpos.eq.dec;meta.main_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.decnullableindexeddAngular distance from the LMC centredegpos.angDistancefloatNNumber of sourcesmeta.numberintpmRAProper motion in Right ascensionmas/yrpos.pm;pos.eq.rafloate_pmRAProper motion error in Right ascensionmas/yrstat.error;pos.pm;pos.eq.rafloatpmDEProper motion in Declinationmas/yrpos.pm;pos.eq.decfloate_pmDEProper motion error in Declinationmas/yrstat.error;pos.pm;pos.eq.decfloatVRRotational velocity with respect to LMC centrekm/sphys.veloc.rotatfloate_VRRotational velocity errorkm/sstat.errorfloat