J/MNRAS/485/4906ivo://CDS.VizieR/J/MNRAS/485/4906doi:10.26093/cds/vizier.74854906CDSde Boer T.J.L.Gieles M.Balbinot E.Henault-Brunet V.Sollima A.,Watkins L.L.Claydon I.2024-08-19T20:17:48Z2022-12-01T13:47:23ZCDS support team

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

cds-question@unistra.frastronomical-modelsglobular-star-clustersvisible-astronomyUsing data from Gaia DR2, we study the radial number density profiles of the Galactic globular cluster sample. Proper motions are used for accurate membership selection, especially crucial in the cluster outskirts. Due to the severe crowding in the centres, the Gaia data are supplemented by literature data from HST and surface brightness measurements, where available. This results in 81 clusters with a complete density profile covering the full tidal radius (and beyond) for each cluster. We model the density profiles using a set of single-mass models ranging from King and Wilson models to generalized lowered isothermal LIMEPY models and the recently introduced SPES models, which allow for the inclusion of potential escapers. We find that both King and Wilson models are too simple to fully reproduce the density profiles, with King (Wilson) models on average underestimating (overestimating) the radial extent of the clusters. The truncation radii derived from the LIMEPY models are similar to estimates for the Jacobi radii based on the cluster masses and their orbits. We show clear correlations between structural and environmental parameters, as a function of Galactocentric radius and integrated luminosity. Notably, the recovered fraction of potential escapers correlates with cluster pericentre radius, luminosity, and cluster concentration. The ratio of half mass over Jacobi radius also correlates with both truncation parameter and PE fraction, showing the effect of Roche lobe filling.2019MNRAS.485.4906Dhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/485/4906CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toI/345 : Gaia DR2 (Gaia Collaboration, 2018)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/485/4906https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/485/4906http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/485/4906https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/485/4906https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/485/4906http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/485/4906GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/485/4906/tableb1 (Best-fitting parameters of LIMEPY and SPES models fit to 81 GCs)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/485/4906/tableb1?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/485/4906/tableb1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/485/4906/tableb1?GETtext/xml+votable180.050000true6.0223292-72.08144440.0055555555555555566/3950 6389 9436 9666 10008 10321 10336 12405 12425 12531 14489 16647 17121 19091 21017 24843 25873 27981 27986 28067 28741 28751 28769 28959 28970 28973 29077 29195 29216 29222 29233 29318 29377 29636-29637 29816 30769 30998 31019 31043 31095 31115 31417 33321 33330 33635 34242 37294 38465 39642 41011 41257 41304 42076 42278 42314 42320 42700 42761 42841 42955 42958 42990 43125 43227 44086 44220 44427 47125 47620 47777 47825 47866 47868 47903 47971 48035 48434 48444 48698 48952https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/485/4906?format=asciiOpticaldefaultJ/MNRAS/485/4906/tableb1Best-fitting parameters of LIMEPY and SPES models fit to 81 GCsSimbadNameSimbad column added by the CDSmeta.idcharnullable_RARight Ascension (J2000) from SIMBAD (not part of the original data)degpos.eq.ra;meta.mainrtWilTidal radius from the Wilson model fitpcphys.size.radiusfloatWLimeDimensionless central potential from the Limepy model fitstat.fit.paramfloate_WLimeError on WLimestat.errorfloatgLimeTruncation parameter from the Limepy model fitstat.fit.paramfloate_gLimeError on gLimestat.errorfloatrhLimeHalf-mass radius from the Limepy model fitpcphys.size.radiusfloate_rhLimeError on rhLimepcstat.errorfloatrtLimeTidal radius from the Limepy model fitpcphys.size.radiusfloate_rtLimeError on rtLimepcstat.errorfloatWSPESDimensionless central potential from the SPES model fitstat.fit.paramfloate_WSPESError on WSPESstat.errorfloat_DEDeclination (J2000) from SIMBAD (not part of the original data)degpos.eq.dec;meta.mainrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameGlobular cluster namemeta.id;meta.maincharWKingDimensionless central potential from the King model fitstat.fit.paramfloate_WKingError on WKingstat.errorfloatrtKingTidal radius from the King model fitpcphys.size.radiusfloate_rtKingError on rtKingpcstat.errorfloatWWilDimensionless central potential from the Wilson model fitstat.fit.paramfloate_WWilError on WWilstat.errorfloate_rtWilError on rtWilpcstat.errorfloatlogfPELogarithm of the fraction of potential escapers (PEs) recovered in the SPES best fitstat.fit.paramfloate_logfPEError on logfPEstat.errorfloatrtieInnermost usable Gaia radiusarcminphys.angSizefloatBGlevBackground level estimated from the outer regions of the Gaia dataarcmin**-2instr.backgroundfloatMlowLow-mass valuesolMassphys.massfloatetaSPES{eta} parameter from the spherical potential escapers (SPES) stitched models fit (1)stat.fit.paramfloate_etaSPESError on etaSPESstat.errorfloatlog1BLogarithm of 1-B, with parameter B coming from the SPES model fit (2)stat.fit.paramfloate_log1BError on log1Bstat.errorfloatrhSPESHalf-mass radius from the SPES model fitpcphys.size.radiusfloate_rhSPESError on rhSPESpcstat.errorfloatrtSPESTidal radius from the SPES model fitpcphys.size.radiusfloate_rtSPESError on rtSPESpcstat.errorfloat