J/MNRAS/486/5924ivo://CDS.VizieR/J/MNRAS/486/5924doi:10.26093/cds/vizier.74865924CDSKipper R.Tenjes P.Hutsi G.Tuvikene T.Tempel E.2024-08-19T20:18:44Z2022-12-15T13:22:26ZCDS support team

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

cds-question@unistra.frglobular-star-clustershalo-starsvisible-astronomyWe study the effect of dynamical friction on globular clusters (GCs) and on the stars evaporated from the GCs (stellar streams) moving in the Galactic halo. Due to dynamical friction, the position of a GC as a stream progenitor starts to shift with respect to its original position in the reference frame of initial GC orbit. Therefore the stars that have evaporated at different times have different mean position with respect to the GC position. This shifting results in a certain asymmetry in stellar density distribution between the leading and trailing arms of the stream. The degree of the asymmetry depends on the characteristics of the environment in which the GC and the stream stars move. As GCs are located mainly in outer parts of a galaxy, this makes dynamical friction a unique probe to constrain the underlying dark matter spatial density and velocity distributions. For a GC NGC 3201 we compared our theoretical shift estimates with available observations. Due to large uncertainties in current observation data, we can only conclude that the derived estimates have the same order of magnitude.2019MNRAS.486.5924Khttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/486/5924CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/486/5924https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/486/5924http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/486/5924https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/486/5924https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/486/5924http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/486/5924GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/486/5924/tablea1 (Complete table of dynamical friction estimates)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/486/5924/tablea1?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/486/5924/tablea1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/486/5924/tablea1?GETtext/xml+votable180.050000true270.8838-30.03530.0055555555555555566/1133 3950 6389 9436 9666 10008 10321 10336 12405 12425 12531 12943 14489 16647 17121 17711 19091 20001 21017 24843 25486 25873 27237 27975 27986 28067 28577 28705 28717 28741 28751 28768-28769 28778 28781 28805 28815 28833 28835 28855 28867-28868 28876-28877 28882 28889 28895 28903 28905 28959 28962 28970 28973-28974 29077 29090 29184 29187 29195 29202 29216 29222 29231 29233 29248 29267 29289 29294 29318 29377 29626 29632 29636-29637 29816 29870 30321 30323 30378 30769 30998 31019 31043 31095 31115 31128 31398 31417 31723 32083 33321 33330 33635 34242 34317 34811 36971 37294 38465 39642 39954 41011 41257 41304 41507 41522 41847 41852 42076 42152-42153 42204 42278 42314 42320 42361 42466 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 48434 48444 48698 48952https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/486/5924?format=asciiOpticaldefaultJ/MNRAS/486/5924/tablea1Complete table of dynamical friction estimatesSimbadNameSimbad column added by the CDSmeta.idcharnullableNameGlobular cluster namemeta.id;meta.mainchar_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.decnullableindexedrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintGLONGalactic longitude of the GCdegpos.galactic.lonGLATGalactic latitude of the GCdegpos.galactic.latDistDistance of the GC from the Sunkpcpos.distancefloatDxisoEstimation of shift along the orbit produced by dynamical friction from only dark matter over the 5Gyr time span (isotropic) (1)pcstat.fit.paramintDPhiisoAngular shift representing the angular distance between the GC and stream centre along the orbit as viewed from the Sun (isotropic) (1)degstat.fit.paramfloatDxaEstimation of shift along the orbit produced by dynamical friction from only dark matter over the 5Gyr time span (anisotropic) (2)pcstat.fit.paramintDPhiaAngular shift representing the angular distance between the GC and stream centre along the orbit as viewed from the Sun (anisotropic) (2)degstat.fit.paramfloatPeriPericentrekpcpos.distance;src.orbitalfloat