1656 new CWNU star clusters J/ApJS/264/8 ivo://CDS.VizieR/J/ApJS/264/8 doi:10.26093/cds/vizier.22640008 CDS He Z. Liu X. Luo Y. Wang K. Jiang Q. 2023-02-15T12:08:05Z 2023-01-30T11:31:49Z CDS support team CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France cds-question@unistra.fr surveys open-star-clusters visible-astronomy trigonometric-parallax proper-motions radial-velocity We report 1,656 new star clusters found in the Galactic disk (|b|<20deg) beyond 1.2kpc, using Gaia EDR3 data. Based on an unsupervised machine learning algorithm, DBSCAN, and followed our previous studies, we utilized a unique method to do the data preparation and obtained the clustering coefficients, which proved to be an effective way to search blindly for star clusters. We tabulated the physical parameters and member stars of the new clusters, and presented some interesting examples, including a globular cluster candidate. We examined the new discoveries and discussed their statistical properties. The proper motion dispersions and radii of the new clusters were the same as the previously reported ones. The new star clusters beyond 1.2kpc were older than those in the solar neighborhood, and the new objects found in the third Galactic quadrant presented the lowest line-of-sight extinctions. Combined with our previous results, the total population of new clusters detected through our method was 2541, corresponding to 55% of all newly published clusters in the Gaia era. The number of cataloged Gaia star clusters was also increased to nearly six thousand. In the near future, it is necessary to make a unified confirmation and member star determination for all reported clusters. 2023ApJS..264....8H https://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJS/264/8 Catalog Research IsServedBy TAP VizieR generic service IsServedBy Conesearch service related-to I/350 : Gaia EDR3 (Gaia Collaboration, 2020) J/other/RAA/21.93 : 74 new open clusters found in Gaia DR2 (He+, 2021) J/ApJS/260/8 : 541 new open cluster candidates (He+, 2022) J/ApJS/262/7 : 886 nearby star clusters (He+, 2022) https://cds.unistra.fr/vizier-org/licences_vizier.html https://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJS/264/8 https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJS/264/8 http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJS/264/8 https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJS/264/8 https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJS/264/8 http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJS/264/8 GET text/xml+votable https://tapvizier.cds.unistra.fr/TAPVizieR/tap Cone search capability for table J/ApJS/264/8/clusters (Parameters for the 1656 objects (table 1)) https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJS/264/8/clusters? https://vizier.iucaa.in/viz-bin/conesearch/J/ApJS/264/8/clusters? http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJS/264/8/clusters? GET text/xml+votable 180.0 50000 true 359.0699 55.97096 0.005555555555555556 Cone search capability for table J/ApJS/264/8/members (Gaia EDR3/DR3 parameters of the member stars (table 2)) https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJS/264/8/members? https://vizier.iucaa.in/viz-bin/conesearch/J/ApJS/264/8/members? http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJS/264/8/members? GET text/xml+votable 180.0 50000 true 358.9299762759705 56.0505105717083 0.005555555555555556 4/2370 5/331 336 345 413 446 454 456-458 480 488 759 789 821 900 3241-3242 3514-3515 3550 3560-3561 3573 3576-3577 3588-3589 3603 3651 3654 3660 3673 3678 3685 3696 3842-3843 3846-3849 3856-3857 3860 3863 3904 3907 3926 5377 5382 5384-5386 5408 5410-5411 5414-5415 5417 5420 5422 5507 5511 5549 5552 5554 5563 5570 5893 5919 5937-5938 5940 5992 6080 6092-6093 6121 6127 7200 7228-7229 7272-7273 7376-7377 7380 7383 7554-7555 7570 9323 9335 9341-9342 9428-9429 9431 9455 9465-9467 9473 9475 9484 9505-9507 9602 9816 9846 9852 9854-9855 9935 9937 9940-9941 9949 9973 9975 9977-9978 9981 9983 10122 10155 10399 10414-10415 10419-10420 10422 10424 10439 10441-10442 10444 10448-10449 10452-10453 10457 10464 10539 10542 10551 10595 10597-10598 10608 10613 10753-10755 10757 10762 10768 11965 6/1146 1221 1232 1281 1283 1292 1294 1296-1298 1301 1303-1304 1311 1314 1318-1319 1330-1333 1336-1337 1353 1355-1356 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41826-41827 41832-41833 41845 41860-41861 42154-42155 42162 42166-42167 42172-42173 42175 42187 42190-42191 42202 42209-42212 42214 42216 42224-42226 42228-42229 42232 42275-42276 42278 42286-42287 42301 42303 42312-42314 42344 42346-42347 42351 42359 42362 42365 42374-42375 42379 42385-42387 42398-42401 42405 42420-42421 42423 42437-42439 42441 42444 42446 42448 42450-42451 42459 42461 42464 42466 42468-42470 42476 42479 42481 42483-42484 42487 42490 42496-42497 42500 42561 42832 42838 42845-42847 42868-42869 43009-43010 43024 43026-43027 43032-43034 43036 43039-43041 43043-43045 43056 43060-43061 43076-43077 43099 43102-43103 43121 43123-43126 43128-43129 43131-43132 43176 43207 43212-43213 43225 43227 43231 43252-43253 47869 48038-48041 48043-48045 https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJS/264/8?format=ascii Optical default J/ApJS/264/8/clusters Parameters for the 1656 objects (table 1) recno Record number assigned by the VizieR team. Should Not be used for identification. meta.record int CWNU Cluste identifier in CWNU (CWNU_id) meta.id.parent int GLON [] Galactic longitude (l) deg pos.galactic.lon _RA.icrs Right 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) deg pos.eq.ra nullable indexed _DE.icrs Declination (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) deg pos.eq.dec nullable indexed GLAT Galactic latitude (b) deg pos.galactic.lat s_GLON 1-sigma dispersion in l (sig_l) deg stat.error;pos.galactic.lon float s_GLAT 1-sigma dispersion in b (sig_b) deg stat.error;pos.galactic.lat float Num Number of member stars (n) meta.number int plx median parallax (plx) mas pos.parallax.trig float s_plx 1-sigma dispersion in plx (sig_plx) mas stat.error;pos.parallax.trig float pmRA Median proper motion along RA, pmRA*cosDE (pmx) mas/yr pos.pm;pos.eq.ra float s_pmRA 1-sigma dispersion in pmx (sig_pmx) mas/yr instr.dispersion float pmDE Median proper motion along DE (pmy) mas/yr pos.pm;pos.eq.dec float s_pmDE 1-sigma dispersion in pmy (sig_pmy) mas/yr instr.dispersion float RV ? Median radial velocity (rv) km/s phys.veloc;pos.heliocentric float nullable s_RV ? 1-sigma dispersion in rv (sig_rv) km/s stat.error;phys.veloc;pos.heliocentric float nullable o_RV Number of member stars with radial velocity error <5km/s (nrv) meta.number int logAge logarithmic age (logage) (1) log(yr) time.age float A0 Extinction at 550nm (A0) (1) mag phys.absorption float m-M Distance modulus (m-M) (1) mag phot.mag.distMod float Class classification of the new clusters (class) src.class int
J/ApJS/264/8/members Gaia EDR3/DR3 parameters of the member stars (table 2) plx Parallax (parallax) mas pos.parallax.trig double e_plx Uncertainty in parallax (parallax) mas stat.error;pos.parallax double pmRA proper motion along R.A. (pmra) mas/yr pos.pm;pos.eq.ra double e_pmRA Uncertainty in pmra (pmra_error) mas/yr stat.error;pos.pm;pos.eq.ra double pmDE proper motion along Dec. (pmdec) mas/yr pos.pm;pos.eq.dec double e_pmDE Uncertainty in pmdec (pmdec_error) mas/yr stat.error;pos.pm;pos.eq.dec double RV ? Gaia DR3 radial velocity (radial_velocity) km/s phys.veloc;pos.heliocentric double nullable e_RV ? Uncertainty in radial_velocity (radial_velocity_error) km/s stat.error double nullable Gmag G band magnitude (phot_g_mean_mag) mag phot.mag;em.opt double BP-RP BP-RP color (bp_rp) mag phot.color;em.opt.B;em.opt.R double _RA.icrs Right 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) deg pos.eq.ra nullable indexed _DE.icrs Declination (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) deg pos.eq.dec nullable indexed recno Record number assigned by the VizieR team. Should Not be used for identification. meta.record int GaiaEDR3 Gaia EDR3 identifier (source_id) meta.id;meta.main GLON Galactic longitude (l) deg pos.galactic.lon indexed GLAT Galactic latitude (b) deg pos.galactic.lat indexed RUWE Renormalised unit weight error for astrometry (ruwe) stat.error double nre [1/11] Response frequency (nre) (1) meta.code int CWNU Cluster identifier in CWNU catalog (cwnu_id) meta.id.parent int