J/A+A/701/A100ivo://CDS.VizieR/J/A+A/701/A100doi:10.26093/cds/vizier.37010100CDSGuerco R.Souto D.Fernandez-Trincado J.G.Daflon S.Cunha K.,Sales-Silva J.V.Loaiza-Tacuri V.Smith V.V.Ortigoza-Urdaneta M.,Roriz M.P.2025-10-01T20:01:09Z2025-09-08T08:14:33ZCDS support team

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

cds-question@unistra.frmilky-way-galaxyopen-star-clustersinfrared-sourcesOpen clusters (OCs) are groups of stars formed from the same cloud of gas and cosmic dust. They play an important role in studying stars' formation and evolution and understanding galaxies' structure and dynamics. The main objective of this work is to identify stars that belong to open clusters using astrometric data from Gaia EDR3 and spectroscopic data from APOGEE DR17. Furthermore, we investigate the metallicity gradients and orbital properties of the open clusters in our sample. By applying the HDBSCAN clustering algorithm to this data, we identified observed stars in our galaxy with similar dynamics, chemical compositions, and ages. The orbits of the open clusters were also calculated using the GravPot16 code. We found 1987 stars belonging to 49 open clusters, and 941 of these stars have probabilities above 80% of belonging to open clusters. Our metallicity gradient presents a two-slope shape for two measures of different Galactic center distances, the projected Galactocentric distance, and the guiding center radius to the Galactic Center, as already reported in previous work. However, when we separate the open clusters by age, we observe no significant difference in the metallicity gradient slope beyond a certain distance from the Galactic center. Our results show a shallower gradient for clusters younger than 2Gyr than those older than 2Gyr. All our OCs dynamically assemble the Disk-like population very well, and they are in prograde orbits, which is typical for disk-like populations. Some OCs resonate with the Galactic bar at the Lagrange points L4 and L5.2025A&A...701A.100Ghttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/701/A100CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/701/A100https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/701/A100http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/701/A100https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/701/A100https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/701/A100http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/701/A100GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/701/A100/tablea1 (Stars belonging to the OCs)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/701/A100/tablea1?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/701/A100/tablea1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/701/A100/tablea1?GETtext/xml+votable180.050000true79.97437530.5859850.0055555555555555565/113 115 118 121 792 1018 1174 1180 3688 6/304 319 335 352-353 366-367 375 378 381 404-405 413 415 448-449 451 457-458 464 466-467 470 476 478 480-481 493 496-498 1065 1302 1308-1309 1333-1335 1341 1481 1483 1512 1514 1782 2167 2269 2336 2338-2339 2341 2343 2346 2349-2350 2354 2433 2435-2438 3062-3063 3076-3077 3089 3091-3092 3094 3127 3174 3176-3177 3277 3614 3632-3633 4076 4078-4079 4253 4255 4296 4298 4320-4321 4346 4639 4685 4687 4702 4705-4706 4709-4710 4712 4716 4726-4728 4730 4732 4734 4816 4819-4820 4902 6149 14167 14173 14175 14197 14199 14225 14573 14575 14583-14584 14586 14730 14778-14779 15121 15124 15379 15385 15388 15411 15416-15417 15432-15433 20557 20562 20568 20811 20814 20902-20903 20909 20957-20959 21557-21559 22128 22130 22885 22887 23612 23638-23639 23644-23645 24157 24159 24327-24328 24330 24338-24339 24344-24345 24347 24367 24376 24378 24483 24489 24491 24499-24500 24502 24522 24544 24546 29005 29007 29023 29028 29045 29047 29728 29730 29871 30213 30215 30224 30226-30227 41613 43034 43054-43055 43140-43141https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/701/A100?format=asciiInfrareddefaultJ/A+A/701/A100/tablea1Stars belonging to the OCsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIDIdentification of stars (2MASS JHHMMSSss+DDMMSSs)meta.id;meta.maincharOCIdentification of open clustersmeta.id.parentcharRAJ2000Right Ascension (J2000)degpos.eq.ra;meta.mainDEJ2000Declination (J2000)degpos.eq.dec;meta.mainPmembProbability of the star belonging to the open cluster%statdoubleSimbadSimbad column added by the CDSmeta.ref.urlchar