Metallicities of old open clusters J/A+A/699/A246 ivo://CDS.VizieR/J/A+A/699/A246 doi:10.26093/cds/vizier.36990246 CDS Hu Q Soubiran C. 2025-08-01T20:03:15Z 2025-07-17T09:14:52Z CDS support team CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France cds-question@unistra.fr milky-way-galaxy open-star-clusters metallicity We determined precise and homogeneous metallicities for old open clusters (>=500Myr) from all-sky catalogues of stellar parameters leveraging Gaia spectrophotometry. Our purpose was to revisit the metallicity distribution of the oldest open clusters as a function of their Galactic position and age with improved statistics. Several catalogues of stellar parameters have been cross-matched to the most recent census of open clusters and their members. Median metallicities per cluster and per catalogue were evaluated by comparison to high-resolution spectroscopy. Our sample includes 1113 open clusters. A typical precision of 0.05dex is achieved for a subsample of nearly 600 clusters when only their bright red giants are considered. Metal-rich and metal-poor clusters never studied before are presented, as well as remnants of dissolving clusters. Galactic maps show a smooth decrease of metallicity from inside to outside the disc. We measured the radial and vertical gradients, their evolution with time and the age-metallicity relation in bins of Galactocentric distance. 2025A&A...699A.246H https://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/699/A246 Catalog Research IsServedBy TAP VizieR generic service IsServedBy Conesearch service related-to I/354 : StarHorse2, Gaia EDR3 photo-astrometric dist. (Anders+, 2022) V/160 : SHBoost 2024 (Khalatyan+, 2024) J/A+A/618/A93 : Gaia DR2 open clusters in the Milky Way (Cantat-Gaudin+, 2018) J/AJ/167/12 : Open cluster parameters with ANN (Cavallo+, 2024) J/A+A/686/A42 : Improving the open cluster census. III. (Hunt+, 2024) https://cds.unistra.fr/vizier-org/licences_vizier.html https://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/699/A246 https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/699/A246 http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/699/A246 https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/699/A246 https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/699/A246 http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/699/A246 GET text/xml+votable https://tapvizier.cds.unistra.fr/TAPVizieR/tap Cone search capability for table J/A+A/699/A246/tablea1 (Median metallicities of old open clusters from different stellar catalogues) https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/699/A246/tablea1? https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/699/A246/tablea1? http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/699/A246/tablea1? GET text/xml+votable 180.0 50000 true 161.5697 -57.038 0.005555555555555556 5/5237 9949 9951 10754 6/1072 1117 1204 1279 1285-1287 1297 1302 1305 1308 1311 1332 1335 1339 1345 1348 1351 1353 1356 1358 1365 1385-1386 1388 1409 1413 1434 1446 1451-1452 1457 1461 1464 1469 1481-1482 1486 1497 1509 1514 1556 1567 1604 1635 1649 1662 1759 1786 1795 1803 1819 1829 1839-1840 1853 1858 1867 1924 1929 1931 1971 1985 2436 2859 2897 2931 2935 2941 2994 2999 3010 3019 3024 3026-3027 3032 3035 3041 3043-3046 3049 3052-3053 3062-3063 3066 3076 3091 3098 3102 3115 3143 3147 3149 3165 3168 3198 3227 3237 3242 3261-3262 3306 3335-3336 3349 3364 3596 3605 3608 3614 3622 3624 3631-3633 3637 3645 3649 3674 3677 3680-3681 3683 3712-3713 3761 3798 3974 4078 4298 6137 6149 6307 6817 6894 10059 12913 12943 12984 12987 12991 13040 13055 13101 13198 13228 13284 13309 13418 13948 13989-13990 13996 14000 14009 14014 14034 14051 14065 14078 14134 14156 14175 14195-14196 14225 14229 14239-14240 14242 14244 14246 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41577-41578 41582-41583 41591-41593 41596-41597 41599 41613 41621-41622 41629 41631 41638 41648-41649 41651-41652 41655 41666-41667 41674 41677-41678 41684 41689 41691 41696 41699 41703 41711 41740 41750 41762 41764 41768-41769 41771 41775 41777 41793 41798 41800-41802 41808-41809 41825 41829 41831 41834 41857-41858 41860 41864 41873-41874 41880 41922 41932 42046 42135 42141 42151 42156-42157 42159 42162 42171-42172 42177 42197 42204 42212 42214 42216 42218 42224 42227 42239 42274 42328 42331 42342-42343 42346 42351 42356 42378 42384 42387 42392 42396 42400 42417 42456 42464-42465 42496 42500-42501 42566 42570 42798 42964 43012 43020 43022 43026-43027 43030 43033-43034 43040-43041 43043-43044 43051 43059 43062 43066 43073 43140 43282 45307 48063 48993 https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/699/A246?format=ascii default J/A+A/699/A246/tablea1 Median metallicities of old open clusters from different stellar catalogues recno Record number assigned by the VizieR team. Should Not be used for identification. meta.record int Cluster Cluster name adopted from Cavallo et al., (2024, Cat. J/AJ/167/12) meta.id;meta.main char RA_ICRS Right Ascension (ICRS) at Ep=J2000 deg pos.eq.ra;meta.main DE_ICRS Declination (ICRS) at Ep=J2000 deg pos.eq.dec;meta.main MA22 ? Median metallicity from Anders et al., (2022, Cat. Cat. I/354) phys.abund.Fe float nullable e_MA22 ? Metallicity uncertainty stat.error float nullable NA22 ? Number of considered members meta.number int nullable MA23f Median metallicity from Andrae et al., (2023ApJS..267....8A) (1) phys.abund.Fe float e_MA23f Metallicity uncertainty stat.error float NA23f Number of considered members meta.number int MA23g ? Median metallicity from Andrae et al., (2023ApJS..267....8A) (2) phys.abund.Fe float nullable e_MA23g ? Metallicity uncertainty stat.error float nullable NA23g ? Number of considered members meta.number int nullable MZ23 ? Median metallicity from Zhang et al. (2023MNRAS.524.1855) phys.abund.Fe float nullable e_MZ23 ? Metallicity uncertainty stat.error float nullable NZ23 ? Number of considered members meta.number int nullable MK24 ? Median metallicity from Khalatyan et al., (2024, Cat. V/160) phys.abund.Fe float nullable e_MK24 ? Metallicity uncertainty stat.error float nullable NK24 ? Number of considered members meta.number int nullable MF24 ? Median metallicity from Fallows et al., (2024MNRAS.531.2126F) phys.abund.Fe float nullable e_MF24 ? Metallicity uncertainty stat.error float nullable NF24 ? Number of considered members meta.number int nullable SimbadName Simbad column added by the CDS meta.id char nullable