J/MNRAS/461/2519ivo://CDS.VizieR/J/MNRAS/461/2519doi:10.26093/cds/vizier.74612519CDSVicente B.Sanchez N.Alfaro E.2024-08-16T20:17:51Z2016-10-14T14:58:51ZCDS support team

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

cds-question@unistra.fropen-star-clustersproper-motionsastrometryNGC 2548 is a ~400-500Myr old open cluster with evidence of spatial substructures likely caused by its interaction with the Galactic disc. In this work we use precise astrometric data from the Carte du Ciel - San Fernando (CdC-SF) catalogue to study the clumpy structure in this cluster. We confirm the fragmented structure of NGC 2548 but, additionally, the relatively high precision of our kinematic data lead us to the first detection of substructures in the proper motion space of a stellar cluster. There are three spatially separated cores each of which has its own counterpart in the proper motion distribution. The two main cores lie nearly parallel to the Galactic plane whereas the third one is significantly fainter than the others and it moves towards the Galactic plane separating from the rest of the cluster. We derive core positions and proper motions, as well as the stars belonging to each core.2016MNRAS.461.2519Vhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/461/2519CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toI/322 : UCAC4 Catalogue (Zacharias+, 2012)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/461/2519https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/461/2519http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/461/2519https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/461/2519https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/461/2519http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/461/2519GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/461/2519/table1 (Astrometric and photometric data for NGC 2548)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/461/2519/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/461/2519/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/461/2519/table1?GETtext/xml+votable180.050000true122.6813965-5.82588290.0055555555555555565/5443 6/21796-217977.952274030004205e-20 1.7798557115773645e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/461/2519?format=asciidefaultJ/MNRAS/461/2519/table1Astrometric and photometric data for NGC 2548e_pmRAError of pmRAmas/yrstat.error;pos.pm;pos.eq.rafloatrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintUCAC4Source ID from UCAC4 (ZZZ-NNNNNN)meta.id;meta.maincharRAJ2000Right ascension (J2000)degpos.eq.ra;meta.mainDEJ2000Declination (J2000)degpos.eq.dec;meta.mainpmRAProper motion in right ascension, pmRA*cosDEmas/yrpos.pm;pos.eq.rafloatpmDEProper motion in declinationmas/yrpos.pm;pos.eq.decfloate_pmDEError of pmDEmas/yrstat.error;pos.pm;pos.eq.decfloatProbMembership probabilitystat.probabilityfloatBmag? B magnitude from UCAC4magphot.mag;em.opt.Bfloatnullablee_Bmag? Error in Bmagmagstat.error;phot.mag;em.opt.BfloatnullableVmag? V magnitude from UCAC4magphot.mag;em.opt.Vfloatnullablee_Vmag? Error in Vmagmagstat.error;phot.mag;em.opt.Vfloatnullablegmag? g magnitude from UCAC4magphot.mag;em.opt.Rfloatnullablee_gmag? Error in gmagmagstat.error;phot.mag;em.opt.Bfloatnullablermag? r magnitude from UCAC4magphot.mag;em.opt.Rfloatnullablee_rmag? Error in rmagmagstat.error;phot.mag;em.opt.Rfloatnullableimag? i magnitude from UCAC4magphot.mag;em.opt.Ifloatnullablee_imag? Error in imagmagstat.error;phot.mag;em.opt.IfloatnullableJmagJ magnitude from UCAC4magphot.mag;em.IR.Jfloate_JmagError in Jmagmagstat.error;phot.mag;em.IR.JfloatHmagH magnitude from UCAC4magphot.mag;em.IR.Hfloate_HmagError in Hmagmagstat.error;phot.mag;em.IR.HfloatKmagK magnitude from UCAC4magphot.mag;em.IR.Kfloate_KmagError in Kmagmagstat.error;phot.mag;em.IR.KfloatOtypeObject type code (1)meta.codechar