ML tool for open cluster membership J/A+A/675/A68 ivo://CDS.VizieR/J/A+A/675/A68 doi:10.26093/cds/vizier.36750068 CDS van Groeningen M.G.J. Castro-Ginard A. Brown A.G.A. Casamiquela L.,Jordi C. 2024-11-28T20:04:24Z 2023-07-03T09:50:22Z 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 visible-astronomy Membership studies characterising open clusters with Gaia data, most using DR2, are so far limited at magnitude G=18 due to astrometric uncertainties at the faint end. Our goal is to extend current open cluster membership lists with faint members and to characterise the low-mass end, which members are important for many applications, in particular for ground-based spectroscopic surveys. We use a deep neural network architecture to learn the distribution of highly reliable open cluster member stars around known clusters. After that, we use the trained network to estimate new open cluster members based on their similarities in a high dimensional space, five-dimensional astrometry plus the three photometric bands. Due to the improved astrometric precisions of Gaia DR3 with respect to DR2, we are able to homogeneously detect new faint member stars (G>18) for the known open cluster population. Our methodology can provide extended membership lists for open clusters down to the limiting magnitude of Gaia, which will enable further studies to characterise the open cluster population, e.g. estimation of their masses, or their dynamics. These extended membership lists are also ideal target lists for forthcoming ground-based spectroscopic surveys. 2023A&A...675A..68V https://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/675/A68 Catalog Research IsServedBy TAP VizieR generic service IsServedBy Conesearch service related-to I/355 : Gaia DR3 Part 1. Main source (Gaia Collaboration, 2022) https://cds.unistra.fr/vizier-org/licences_vizier.html https://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/675/A68 https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/675/A68 http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/675/A68 https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/675/A68 https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/675/A68 http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/675/A68 GET text/xml+votable https://tapvizier.cds.unistra.fr/TAPVizieR/tap Cone search capability for table J/A+A/675/A68/clusters (List of open clusters) https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/675/A68/clusters? https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/675/A68/clusters? http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/675/A68/clusters? GET text/xml+votable 180.0 50000 true 51.87 34.9809722 0.005555555555555556 Cone search capability for table J/A+A/675/A68/members (Members of 2492 open clusters) https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/675/A68/members? https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/675/A68/members? http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/675/A68/members? GET text/xml+votable 180.0 50000 true 50.9641641683204 35.3697690126505 0.005555555555555556 2/55 153 3/7 20 24 27 30 48-50 56 224-225 228-229 240-241 244-245 335-336 338 344 357 370 448 453-455 497 583 589-590 592 594 620-621 646-647 652-653 656 658-659 661-663 4/53 55 61-63 74-75 79 84 86 88-90 92 101 103 107 112 114 148-149 151-152 187 189-191 204-206 208 217 222 228 232-234 394 422 430 807 810 812 815 818 824 829 831 847 858-859 861-863 874-875 877 879 909-910 920-921 924-925 929 968 973-974 984 1299 1301 1333 1335 1337 1339 1348-1349 1360 1370-1371 1374 1380-1382 1384-1386 1388 1390 1394-1395 1425 1427 1436-1437 1460-1461 1463 1469 1474 1477 1485 1487 1498 1504 1512 1514-1515 1518 1520-1521 1523 1526 1531 1534 1796 1798 1800-1802 1804 1807 1811 1840 1843-1845 1855 1861 1864 1866 1868 1870-1871 1882 1888 1890-1891 1899 1902-1903 1905 1918-1919 1940-1941 1984-1986 2007 2322-2323 2325-2329 2349 2351 2353-2355 2366-2367 2382-2383 2394 2400 2404-2405 2410 2414 2437-2438 2444-2445 2447 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37490-37491 37506 37533 37536-37537 37544 37565 37567 37569 37571 37576-37577 37579 37608-37609 37611 37633-37635 37641-37643 37828-37830 37840-37842 37952-37954 37972 37974 37976 37978-37979 37996-37998 38002 38008 38010-38011 38013-38015 38080-38081 38086 38088 38090-38091 38097-38098 38100-38101 38103 38144 38151 38184 38186 38189-38190 38194 38197-38199 38201-38203 38219 38244-38246 38272-38273 38275-38276 38279 38289-38292 38296 38429-38431 38437-38438 38444 38446-38448 38450-38453 38455 38457-38458 38462 38496 38499-38500 38503 38505-38506 38509 38512-38513 38516 38522 38532 38534-38535 38552 38557-38559 38580-38581 38583 38587 38594-38595 38608 38610-38611 38614-38615 38618-38622 38640 38643 38646-38649 38651 38653 38656-38658 38664 38786 38795 38816 38819 38930-38931 38933 38935 38940-38941 38943 38961-38963 38968-38969 38971 38976 38978-38979 39036-39037 39039 39057-39059 39079 39098 39100-39101 39103 39136-39137 39139 39442 39448 39450 39453-39454 39474 39476-39477 39484 39487 39489-39491 39569 39571 39573-39574 39578 39581 39605 39616-39617 39619 39624 39629 39658 39666-39670 39677 39840-39841 39843 39852-39853 39855 39880-39881 39883-39886 39896-39897 39899 39964 39966 39980-39981 39988 39990 39992 39994 40008 40011-40012 40015 40023 40038-40040 40045 40064-40066 40074 40077-40079 40088 40090-40091 40097-40101 40103 40108 40110 40112-40114 40128 40171 40173-40175 40184 40186-40187 40200 40452 40454 40484 40486-40487 40492-40494 40499 40502 40505 40508 40513-40515 40532 40534 40540 40542 40545 40564 40580 40582 40588 40590 40595 40604 40606 40612 40614-40615 40667-40668 40670-40672 40674 40677-40679 40838-40840 40842-40843 40858-40859 40880-40882 40884 40886 40893-40894 40930 41037 41039 41047 41065 41109 41111 41113-41115 41127 41144-41145 41147 41153-41155 41188-41189 41191-41193 41197-41199 41216-41217 41219 41281-41283 41515 41521-41522 41532 41534-41535 41539 41570-41571 41573-41575 41601 41603 41661-41663 41724-41725 41900 41904 41906-41907 41928-41930 41940-41942 41953 41956-41957 41959 41968 42052 42055 42061-42063 42065-42066 42284-42285 42287 42297-42299 42540-42541 42543 42552-42554 42556 42565-42567 42593 42595 42604-42605 42617-42619 42621-42622 42645 42647 42649 42654 42677-42678 42698 42700 42708-42710 42713-42715 42717 42719-42720 42723 42731 42733 42740 42745 42749 42751 42764-42766 42772-42773 42775-42776 42778-42779 42781-42786 42788-42790 42792 42820-42822 42830 42860-42862 42881 42883 42888-42890 42892-42893 42895 42905-42909 42911-42912 42925 42927 42931-42932 42934 42940 42943 42950 42956-42958 42964-42966 42984-42986 42988 43068-43070 43073-43075 43081-43085 43087-43088 43090 43094 43099 43104 43107-43109 43114-43115 43117 43119 43132 43134 43144-43146 43153 43155 43161 43163 43172-43173 43176 43185-43187 43220 43222 43228 43244 43269-43272 43274-43275 43280 43282-43283 43292 43294 43297 43299 43305 43308-43309 43320 43419 43427 43431 43435 43446 43452-43454 43496 43498 43544-43545 43548 43584 43586 43777 43779 43798 43800-43802 43804 44115 44288 44293 45569-45571 45574 45577-45579 45581-45583 45604 45606 45608 45610-45611 45613-45616 45618 45696-45698 45700-45701 45703 45709 45711-45712 45720 45728-45729 45731-45733 45735 45744 45746 45752 46461-46462 46550 46556 46580 47109 47116 47118 47140 47144-47146 47163 47232-47233 47237-47239 47298-47299 47644 47646-47647 47676-47677 47679-47682 47690 47760-47761 47763 47765-47767 47773-47774 47796 47798-47799 47809-47810 47822 47869 47871 48051 48054 48061 48063 48094-48095 48100 48103 48114 48120 48122-48124 48126 48782 48808-48810 48813 48815 48826 48831 48870 48872-48873 48875 48883 48886 48892 48894-48895 48959 49002-49003 49007 49041 49049 49051 49066 49076-49077 49104-49105 49112 49114-49115 49133-49134 49145 https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/675/A68?format=ascii Optical default J/A+A/675/A68/clusters List of open clusters Simbad Simbad column added by the CDS meta.ref.url char recno Record number assigned by the VizieR team. Should Not be used for identification. meta.record int Cluster Cluster name meta.id;meta.main char RAJ2000 Right ascension (J2000) pos.eq.ra;meta.main DEJ2000 Declination (J2000) pos.eq.dec;meta.main SName Simbad name meta.id char
J/A+A/675/A68/members Members of 2492 open clusters recno Record number assigned by the VizieR team. Should Not be used for identification. meta.record int GaiaDR3 Gaia DR3 source ID (source_id) meta.id;meta.main RA_ICRS Right Ascension (ICRS) (ra) deg pos.eq.ra;meta.main indexed DE_ICRS Declination (ICRS) (dec) deg pos.eq.dec;meta.main indexed Plx Absolute stellar parallax (parallax) mas pos.parallax double pmRA Proper motion in right ascension direction (pmra) mas/yr pos.pm;pos.eq.ra double pmDE Proper motion in declination direction (pmdec) mas/yr pos.pm;pos.eq.dec double Gmag G-band mean magnitude (phot_g_mean_mag) mag phot.mag;em.opt double BPmag BP-band mean magnitude (phot_bp_mean_mag) mag phot.mag;em.opt.B double RPmag RP-band mean magnitude (phot_rp_mean_mag) mag phot.mag;em.opt.R double Cluster Cluster name (cluster) meta.id.parent char Pmemb Membership probability (PMemb) stat.probability float