J/MNRAS/474/2479ivo://CDS.VizieR/J/MNRAS/474/2479doi:10.26093/cds/vizier.74742479CDSBalbinot E.Gieles M.2024-08-18T20:17:15Z2021-03-04T09:59:43ZCDS support team

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

cds-question@unistra.frmilky-way-galaxyglobular-star-clustersproper-motionsgalaxy-classification-systemsWe present a study of the effects of collisional dynamics on the formation and detectability of cold tidal streams. A semi-analytical model for the evolution of the stellar mass function was implemented and coupled to a fast stellar stream simulation code, as well as the synthetic cluster evolution code EMACSS for the mass evolution as a function of a globular cluster orbit. We find that the increase in the average mass of the escaping stars for clusters close to dissolution has a major effect on the observable stream surface density. As an example, we show that Palomar 5 would have undetectable streams (in an SDSS-like survey) if it was currently three times more massive, despite the fact that a more massive cluster loses stars at a higher rate. This bias due to the preferential escape of low-mass stars is an alternative explanation for the absence of tails near massive clusters, than a dark matter halo associated with the cluster. We explore the orbits of a large sample of Milky Way globular clusters and derive their initial masses and remaining mass fraction. Using properties of known tidal tails, we explore regions of parameter space that favour the detectability of a stream. A list of high-probability candidates is discussed.2018MNRAS.474.2479Bhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/474/2479CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/other/A+AT/25.185 : globular clusters absolute proper motions (Dambis, 2006)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/474/2479https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/474/2479http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/474/2479https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/474/2479https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/474/2479http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/474/2479GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/474/2479/table1 (Summary of the orbital parameters obtained from the sampling of positions and velocities for the clusters in our sample)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/474/2479/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/474/2479/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/474/2479/table1?GETtext/xml+votable180.050000true6.0223292-72.08144440.0055555555555555566/1133 3950 6389 9436 9666 10008 10321 10336 12405 12425 12531 12943 14489 16647 16775 17121 17711 19091 20001 21017 24843 25873 27237 27981 27986 28067 28577 28705 28717 28741 28751 28768-28769 28778 28805 28808 28815 28817 28833 28835 28855 28867-28868 28876-28877 28882 28889 28895 28903 28905 28959 28962 28970 28973-28974 29077 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 36971 37294 38465 39642 39954 41011 41257 41304 41507 41522 41847 41852 42076 42152 42278 42314 42320 42361 42466 42700 42761 42789 42841 42955 42958 42990 43125 43193 43227 43894 44086 44220 44427 47125 47620 47777 47825 47866 47868 47903 47916 47935 47971 48035 48434 48444 48698 48952https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/474/2479?format=asciiOpticaldefaultJ/MNRAS/474/2479/table1Summary of the orbital parameters obtained from the sampling of positions and velocities for the clusters in our sampleSimbadNameSimbad column added by the CDSmeta.idcharnullableNameNamemeta.id;meta.maincharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintn_Name[*] * indicates clusters with no proper motionsmeta.notecharpmRA? Proper motion along RA, pmRA*cosDEmas/yrpos.pm;pos.eq.rafloatnullablee_pmRA? rms uncertainty on pmRAmas/yrstat.error;pos.pm;pos.eq.rafloatnullablepmDE? Proper motion along DEmas/yrpos.pm;pos.eq.decfloatnullablee_pmDE? rms uncertainty on pmDEmas/yrstat.error;pos.pm;pos.eq.decfloatnullableVlos? LOS velocitykm/sphys.velocfloatnullablee_Vlos? rms uncertainty on Vloskm/sstat.errorfloatnullableRapoApocentre radiuskpcphys.size.radiusfloate_Raporms uncertainty on Rapokpcstat.errorfloatRperiPericentre radius distancekpcphys.size.radiusfloate_Rperirms uncertainty on Rperikpcstat.errorfloateccOrbital eccentricitysrc.orbital.eccentricityfloate_eccrms uncertainty on Eccstat.errorfloatMiInitial mass100000solMassphys.massfloate_Mirms uncertainty on Mi100000solMassstat.errorfloatmuRemaining mass fraction in the clusterphys.mass;arith.ratiofloate_murms uncertainty on mustat.errorfloatphiOrbital phasetime.phasefloate_phirms uncertainty on phistat.errorfloatrJJacobi radiuspcphys.size.radiusfloate_rJrms uncertainty on rJpcstat.errorfloatr_pmRAProper motion references (1)meta.ref;pos.pm;pos.eq.rachar_RARight Ascension (J2000) from SIMBAD (not part of the original data)degpos.eq.ra;meta.main_DEDeclination (J2000) from SIMBAD (not part of the original data)degpos.eq.dec;meta.main