J/MNRAS/481/918ivo://CDS.VizieR/J/MNRAS/481/918doi:10.26093/cds/vizier.74810918CDSArakelyan N.R.Pilipenko S.V.Libeskind N.I.2024-08-19T20:14:33Z2022-07-04T13:19:07ZCDS support team

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

cds-question@unistra.frglobular-star-clustersmilky-way-galaxyvisible-astronomyThe Milky Way's satellite galaxies and globular clusters (GCs) are known to exhibit an anisotropic spatial distribution. We examine in detail this anisotropy by the means of the inertia tensor. We estimate the statistical significance of the results by repeating this analysis for random catalogues that use the radial distribution of the real sample. Our method reproduces the well-known planar structure in the distribution of the satellite galaxies. We show that for GCs several anisotropic structures are observed. The GCs at small distances, 2<R<10kpc, show a structure coplanar with the Galactic plane. At smaller and larger distances, the whole sample of GCs shows quite weak anisotropy. Nevertheless, at largest distances the orientation of the structure is close to that of the satellite galaxies, i.e. perpendicular to the Galactic plane. We estimate the probability of random realization for this structure of 1.7 per cent. The bulge-disc GCs show a clear disc-like structure lying within the Galactic disc. The old halo GCs show two structures: a well-pronounced polar elongated structure at R<3kpc that is perpendicular to the Galactic plane, and a less pronounced disc-like structure coplanar with the Galactic disc at 6<R<20kpc. The young halo GCs do not show significant anisotropy.2018MNRAS.481..918Ahttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/481/918CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/ApJ/772/82 : A catalog of globular cluster systems (Harris+, 2013)J/AJ/144/4 : Properties of dwarf galaxies in the Local Grouphttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/481/918https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/481/918http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/481/918https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/481/918https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/481/918http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/481/918GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/481/918/table1 (Catalogue of 157 Galactic GCs coordinates and types compiled from Harris et al. (2013ApJ...772...82H, Cat. J/ApJ/772/82) and Mackey & van den Bergh (2005MNRAS.360..631M))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/481/918/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/481/918/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/481/918/table1?GETtext/xml+votable180.050000true6.0349-72.08110.005555555555555556Cone search capability for table J/MNRAS/481/918/table2 (Catalogue of 27 Milky Way SGs extracted from McConnachie (2012AJ....144....4M, Cat. J/AJ/144/4))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/481/918/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/481/918/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/481/918/table2?GETtext/xml+votable180.050000true108.1473-27.67840.0055555555555555566/619 1133 3950 4419 5939 6021 6212 6389 7416 8745 9436 9666 10008 10183 10308 10321 10336 10444 10769 11691 12405 12425 12531 12943 14489 16647 17121 17710 18926 19091 20001 21017 24843 25873 26487 26983 27000 27207 27237 27580 27852 27975 27986 28067 28136 28361 28577 28705 28717 28741 28751 28768-28769 28778 28781 28805 28808 28815 28817 28833 28835 28838 28855 28867-28868 28876-28877 28882 28889 28895 28903 28905 28959 28962 28970 28973-28974 29077 29090 29097 29113 29184 29187 29195 29202 29216 29222 29231 29233 29248 29267 29289 29294 29318 29377 29626 29632 29636-29637 29816 29870 30269 30321 30323 30378 30769 30998 31019 31043 31095 31115 31128 31398 31417 31692 31723 32083 33096 33295 33321 33330 33635 34242 34317 34811 35720 35969 36971 37294 38465 39100 39642 39860 39954 41011 41257 41304 41507 41522 41847 41852 42076 42152 42204 42278 42314 42320 42361 42466 42528 42700 42761 42789 42841 42862 42955 42958 42990 43125 43193 43227 43894 44086 44220 44427 47125 47620 47745 47777 47825 47866 47868 47903 47916 47935 47971 48035 48434 48444 48698 48952https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/481/918?format=asciiOpticaldefaultJ/MNRAS/481/918/table1Catalogue of 157 Galactic GCs coordinates and types compiled from Harris et al. (2013ApJ...772...82H, Cat. J/ApJ/772/82) and Mackey & van den Bergh (2005MNRAS.360..631M)_RA.icrsRight ascension (ICRS) (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services)degpos.eq.ranullableindexed_DE.icrsDeclination (ICRS) (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services)degpos.eq.decnullableindexedSimbadSimbad column added by the CDSmeta.ref.urlcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameGlobular cluster namemeta.id;meta.maincharGLONGalactic longitudedegpos.galactic.lonGLATGalactic latitudedegpos.galactic.latDistDistance from the Sunkpcpos.distancefloatTypeType, according to Mackey & van den Bergh (2005MNRAS.360..631M) (1)src.classcharJ/MNRAS/481/918/table2Catalogue of 27 Milky Way SGs extracted from McConnachie (2012AJ....144....4M, Cat. J/AJ/144/4)_RA.icrsRight ascension (ICRS) (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services)degpos.eq.ranullableindexed_DE.icrsDeclination (ICRS) (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services)degpos.eq.decnullableindexedSimbadSimbad column added by the CDSmeta.ref.urlcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameSatellite galaxy namemeta.id;meta.maincharGLONGalactic longitudedegpos.galactic.lonGLATGalactic latitudedegpos.galactic.latDistDistance from the Sunkpcpos.distanceint