J/MNRAS/492/5811ivo://CDS.VizieR/J/MNRAS/492/5811doi:10.26093/cds/vizier.74925811CDSBalaguer-Nunez L.Lopez del Fresno M.Solano E.Galadi-Enriquez D.,Jordi C.Jimenez-Esteban F.Masana E.Carbajo-Hijarrubia J.Paunzen E.2024-08-20T20:15:55Z2020-03-10T15:30:53ZCDS support team

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

cds-question@unistra.frmilky-way-galaxyopen-star-clustersproper-motionsvisible-astronomytrigonometric-parallaxClusterix 2.0 is a web-based, Virtual Observatory compliant, interactive tool for the determination of membership probabilities in stellar clusters based on proper-motion data using a fully non-parametric method. In an area occupied by a cluster, the frequency function is made up of two contributions: cluster and field stars. The tool performs an empirical determination of the frequency functions from the vector point diagram without relying on any previous assumption about their profiles. Clusterix 2.0 allows us to search the appropriate spatial areas in an interactive way until an optimal separation of the two populations is obtained. Several parameters can be adjusted to make the calculation computationally feasible without interfering with the quality of the results. The system offers the possibility to query different catalogues, such as Gaia, or upload a user's own data. The results of the membership determination can be sent via Simple Application Messaging Protocol (SAMP) to Virtual Observatory (VO) tools such as Tool for OPerations on Catalogues And Tables (TOPCAT). We apply Clusterix 2.0 to several open clusters with different properties and environments to show the capabilities of the tool: an area of five degrees radius around NGC 2682 (M67), an old, well-known cluster; a young cluster NGC 2516 with a striking elongated structure extended up to four degrees; NGC 1750 and NGC 1758, a pair of partly overlapping clusters; the area of NGC 1817, where we confirm a little-known cluster, Juchert 23; and an area with many clusters, where we disentangle two overlapping clusters situated where only one was previously known: Ruprecht 26 and the new Clusterix 1.2020MNRAS.492.5811Bhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/492/5811CatalogResearchIsServedByTAP 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/492/5811https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/492/5811http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/492/5811https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/492/5811https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/492/5811http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/492/5811GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/492/5811/clusters (List of studied clusters)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/492/5811/clusters?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/492/5811/clusters?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/492/5811/clusters?GETtext/xml+votable180.050000true76.912517.581670.005555555555555556Cone search capability for table J/MNRAS/492/5811/table6 (Astrometric parameters in the areas of 8 open clusters: M67, NGC2516, NGC1817, Juchert23, NGC1750, NGC1758, Ruprecht26, Clusterix01)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/492/5811/table6?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/492/5811/table6?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/492/5811/table6?GETtext/xml+votable180.050000true132.8590488911.897761110.0055555555555555564/265 267-268 270 2349 5/1038-1039 1050 1059 1078 1084 5380 6028 6030-6031 6072-6074 9374-9375 9393 9395 9401 9403-9406 9440 6/4143 4150-4151 4194 4204 4206-4207 4218 4229-4231 4260-4261 4263 4269 4304 4306-4307 4344-4346 4625 4628-4629 4672-4673 4676-4677 21509 21511 21517 21528-21529 24101 24103 24109 24111 24116 24118-24119 24208-24209 24212 24223 24245 24247 24253 24266-24267 24270-24271 24300-24302 37485-37487 37490-37491 37494-37495 37569 37571 37577 37579 37601 37603 37609 37611 37628 37672 37674 37768 37770 377921.9867573869263685e-19 3.916500758235022e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/492/5811?format=asciiOpticaldefaultJ/MNRAS/492/5811/clustersList of studied clustersSimbadNameSimbad column added by the CDSmeta.idcharClusterCluster namemeta.id.parentcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRAJ2000? Simbad right ascension (J2000)pos.eq.ra;meta.mainnullableDEJ2000? Simbad declination (J2000)pos.eq.dec;meta.mainnullableNmembNumber of members in table6meta.numberintONameOther namemeta.id;meta.maincharJ/MNRAS/492/5811/table6Astrometric parameters in the areas of 8 open clusters: M67, NGC2516, NGC1817, Juchert23, NGC1750, NGC1758, Ruprecht26, Clusterix01recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRA_ICRSGaia DR2 right ascension (ICRS) at epoch 2015.5 (ra)degpos.eq.ra;meta.mainindexedDE_ICRSGaia DR2 declination (ICRS) at epoch 2015.5 (dec)degpos.eq.dec;meta.mainindexedpmRAGaia DR2 proper motion in right ascension direction (pmRA*cosDE) (pmra)mas/yrpos.pm;pos.eq.radoublee_pmRAGaia DR2 standard error of proper motion in right ascension direction (pmra_error)mas/yrstat.error;pos.pm;pos.eq.rafloatpmDEGaia DR2 proper motion in declination direction (pmdec)mas/yrpos.pm;pos.eq.decdoublee_pmDEGaia DR2 standard error of proper motion in declination direction (pmdec_error)mas/yrstat.error;pos.pm;pos.eq.decfloatPlx? Gaia DR2 absolute stellar parallax (parallax)maspos.parallaxfloatnullablee_Plx? Gaia DR2 standard error of parallax (parallax_error)masstat.error;pos.parallaxfloatnullableBPmag? Gaia DR2 BP mean magnitude (photbpmean_mag)magphot.mag;em.opt.Bfloatnullablee_BPmag? Gaia DR2 Error on the BP mean flux (photbpmeanfluxerror)magstat.error;phot.magfloatnullableRPmag? Gaia DR2 RP mean magnitude (photrpmean_mag)magphot.mag;em.opt.Rfloatnullablee_RPmag? Gaia DR2 Error on the RP mean flux (photrpmeanfluxerror)magstat.error;phot.magfloatnullableGmag? Gaia DR2 G mean magnitude (photgmean_mag)magphot.mag;em.optfloatnullablee_Gmag? Gaia DR2 Error on the G mean flux (photgmeanfluxerror)magstat.error;phot.magfloatnullableRV? Gaia DR2 spectroscopic radial velocity (radial_velocity)km/sphys.veloc;pos.heliocentricfloatnullablee_RV? Gaia DR2 radial velocity error (radialvelocityerror)km/sstat.errorfloatnullableProbMembership probability from Clusterixstat.probabilitydoubleRegionRegion assigned as input to Clusterixmeta.notecharClusterCluster Namemeta.id.parentcharMem[M/N] Clasification as member(M) or non (N)meta.code.membercharGaiaDR2Display the Gaia DR2 data (Gaia Collaboration, 2018, Cat. I/345)meta.ref.urlchar_RA.icrsRight ascension (ICRS) at Epoch=J2000, proper motions taken into accountdegpos.eq.ranullableindexed_DE.icrsDeclination (ICRS) at Epoch=J2000, proper motions taken into accountdegpos.eq.decnullableindexed