J/ApJ/766/136ivo://CDS.VizieR/J/ApJ/766/136doi:10.26093/cds/vizier.17660136CDSBahramian A.Heinke C.O.Sivakoff G.R.Gladstone J.C.2017-06-29T08:55:46Z2014-12-12T09:38:40ZCDS support team

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

cds-question@unistra.frglobular-star-clustersstellar-distancegalaxy-kinematicsThe high stellar densities in the cores of globular clusters cause significant stellar interactions. These stellar interactions can produce close binary mass-transferring systems involving compact objects and their progeny, such as X-ray binaries and radio millisecond pulsars. Comparing the numbers of these systems and interaction rates in different clusters drives our understanding of how cluster parameters affect the production of close binaries. In this paper we estimate stellar encounter rates ({Gamma}) for 124 Galactic globular clusters based on observational data as opposed to the methods previously employed, which assumed "King-model" profiles for all clusters. By deprojecting cluster surface brightness profiles to estimate luminosity density profiles, we treat "King-model" and "core-collapsed" clusters in the same way. In addition, we use Monte Carlo simulations to investigate the effects of uncertainties in various observational parameters (distance, reddening, surface brightness) on {Gamma}, producing the first catalog of globular cluster stellar encounter rates with estimated errors. Comparing our results with published observations of likely products of stellar interactions (numbers of X-ray binaries, numbers of radio millisecond pulsars, and {gamma}-ray luminosity) we find both clear correlations and some differences with published results.2013ApJ...766..136Bhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/766/136CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toVII/202 : Globular Clusters in the Milky Way (Harris, 1997)J/MNRAS/392/L55 : GCs in M31 from K-band photometry (Peacock+, 2009)J/AJ/133/1287 : JHK phot. of 24 Galactic globular clusters (Valenti+, 2007)J/ApJ/657/286 : Chandra X-ray sources in M30 (NGC 7099) (Lugger+, 2007)J/ApJ/651/1098 : Faint X-ray sources in Terzan 5 (Heinke+, 2006)J/AJ/132/447 : Surface Brightness of 38 Gal. GCs (Noyola+, 2006)J/ApJS/161/304 : Star clusters in Milky Way & satellites (McLaughlin+, 2005)J/ApJ/613/279 : ACS Virgo Cluster Survey. III. M87 (Jordan+, 2004)J/AJ/109/218 : Catalogue of globular cluster profiles (Trager+ 1995)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/766/136https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/766/136http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/766/136https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/766/136https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/766/136http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/766/136GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/766/136/result (The {Gamma} values of the globular clusters (GCs) and the 1{sigma} error estimations based on different equations)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/766/136/result?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/766/136/result?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/766/136/result?GETtext/xml+votable180.050000true267.0208333-24.780.0055555555555555566/1133 3950 6389 9436 9666 10008 10321 10336 12405 12425 12531 12943 14489 16647 17121 19091 20001 21017 24843 25873 27237 27981 27986 28067 28577 28705 28717 28741 28751 28768 28769 28778 28805 28808 28815 28817 28835 28838 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 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 41011 41257 41304 41507 41522 41847 41852 42076 42278 42314 42320 42361 42466 42528 42700 42761 42789 42841 42862 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/ApJ/766/136?format=asciiOpticaldefaultJ/ApJ/766/136/resultThe {Gamma} values of the globular clusters (GCs) and the 1{sigma} error estimations based on different equationsSimbadNameSimbad column added by the CDSmeta.idcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameGlobular cluster identificationmeta.id;meta.maincharf_NameFlag(s) on cluster (1)meta.codecharE(B-V)[0.01/2.7] Foreground reddeningmagphot.color.excessfloatnullablee_E(B-V)Uncertainty in E(B-V)magstat.errorfloatnullablem-M[12.3/21.5] Visual distance modulusmagphot.mag.distModfloatnullablee_m-MUncertainty in m-Mmagstat.errorfloatnullableDist[2.2/119.6] Distancekpcpos.distance;pos.heliocentricfloatnullablesigma[0.4/19] Velocity dispersion {sigma}km/sphys.veloc.dispersionfloatnullablee_sigmaUncertainty in sigmakm/sstat.errorfloatnullabler_sigma[gh] Reference for sigma (2)meta.ref;pos.framecharnullableRefReference for surface brightness profile (3)meta.ref;pos.framecharCC[c: ] c=core collapsed cluster flag, from Harris Catalog (VII/202)meta.codechardSB[0.03/0.5] Assumed uncertainty in surface brightness profilemag.arcsec**-2stat.errorfloatnullableGamma[0.001/6800] Calculated stellar encounter rate {Gamma}, normalized to NGC104-1000 (4)stat.paramdoublenullablee_GammaLower bound on Gammastat.errordoublenullableE_GammaUpper bound on Gammastat.error;stat.maxdoublenullableGamma1? Integrated stellar encounter rate (4{pi}{sigma}^-1^{int}{rho}^2^r^2^dr)stat.paramdoublenullablee_Gamma1? Lower uncertainty in Gamma1stat.errordoublenullableE_Gamma1? Upper uncertainty in Gamma1stat.error;stat.maxdoublenullableGamma2? Estimated stellar encounter rate based on {rho}^2^r^3^/{sigma}stat.paramdoublenullablee_Gamma2? Lower uncertainty in Gamma2stat.errordoublenullableE_Gamma2? Upper uncertainty in Gamma2stat.error;stat.maxdoublenullablen_Gamma3[ab] Note on Gamma values (7)meta.notecharGamma3Estimated stellar encounter rate based on {rho}^1.5^r^2^stat.paramdoublee_Gamma3Lower uncertainty in Gamma3stat.errordoubleE_Gamma3Upper uncertainty in Gamma3stat.error;stat.maxdoubleGCCatCross-match within 30" with GCs catalogs (Trager+, 1995, J/AJ/109/218; Noyola+, 2006, J/AJ/132/447 and Harris, 1997, VII/202meta.ref.urlintnullable_RAPositions from SIMBAD database (right ascension part)degpos.eq.ra;meta.main_DEPositions from SIMBAD database (declination part)degpos.eq.dec;meta.main