J/A+A/676/A140ivo://CDS.VizieR/J/A+A/676/A140doi:10.26093/cds/vizier.36760140CDSOrtigoza-Urdaneta M.Vieira K.Fernandez-Trincado J.G.Queiroz A..B.A.,Barbuy B.Beers T.C.Chiappini C.Anders F.Minniti D.Tang B.2025-02-27T20:01:38Z2023-08-23T08:20:53ZCDS support team

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

cds-question@unistra.frgiant-starschemical-abundancesvisible-astronomyinfrared-astronomyBased on high-quality APOGEE DR17 and Gaia DR3 data for 1742 red giants stars within 5 kpc of the Sun and not rotating with the Galactic disc (V_phi_<100km/s), we use the nonlinear technique of unsupervised analysis t-SNE to detect coherent structures in the space of ten chemical-abundance ratios: [Fe/H], [O/Fe], [Mg/Fe], [Si/Fe], [Ca/Fe], [C/Fe], [N/Fe], [Al/Fe], [Mn/Fe], and [Ni/Fe]. Additionally, we obtain orbital parameters for each star using the non-axisymmetric gravitational potential GravPot16. Seven structures are detected, including the Splash, Gaia-Sausage-Enceladus (GSE), the high-alpha heated-disc population, N-C-O peculiar stars, and inner disk-like stars, plus two other groups that did not match anything previously reported in the literature, here named Galileo 5 and Galileo 6 (G5 and G6). These two groups overlap with Splash in [Fe/H], G5 being lower metallicity than G6, both between GSE and Splash in the [Mg/Mn] versus [Al/Fe] plane, G5 in the alpha -rich in-situ locus, and G6 on the border of the alpha-poor in-situ one; nonetheless their low [Ni/Fe] hints to a possible ex-situ origin. Their orbital energy distributions are between the Splash and GSE, with G5 being slightly more energetic than G6. We verified the robustness of all the obtained groups by exploring a large range of t-SNE parameters, applying it to various subsets of data, and also measuring the effect of abundance errors through Monte Carlo tests.2023A&A...676A.140Ohttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/676/A140CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toI/355 : Gaia DR3 Part 1. Main source (Gaia Collaboration, 2022)III/284 : APOGEE-2 data from DR16 (Johnsson+, 2020)J/A+A/673/A155 : StarHorse data for 8 spectroscopic surveys (Queiroz+, 2023)J/A+A/663/A126 : GALILEO. I. New N rich stars (Fernandez-Trincado+, 2022)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/676/A140https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/676/A140http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/676/A140https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/676/A140https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/676/A140http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/676/A140GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/676/A140/tablec1 (Relevant information for each star used in this investigation, including a tag for each detected group)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/676/A140/tablec1?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/676/A140/tablec1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/676/A140/tablec1?GETtext/xml+votable180.050000true0.694903061.465073060.0055555555555555565/2471 7337 7778 8466 10738 11088 11090 11094 11097 12007 6/76 78 146 173 322 335 369 371 378 391 435 467 552 828 855 885 1019 1070 1128 1169 1534 1960 2324 2338 2344 2351 2414 2432 2440 2627 2633 2781 3468 3510 3757 3807 3942 4075 4108 4122 4266 4270 4297 4313 4340 4343 4451 4465 4488 4621 4647 4661-4662 4681 4714 4729 4734 4753 4757 4765 4767 4773 4792 4801 4807-4808 4903 4923 4935 4973 4990 5008 5011 5029 5083 5145 5226-5227 5307 5348 5351 5373 5436 5470 5526 5528 5531-5534 5556-5557 5567 5586 5600 5631 5639 5644 5646-5647 5650 5667 5670 5677 5686 5741 5752 5754-5755 5833 5841 5928 5938-5939 5941 5945 5963-5964 6149 6215 6224 6243 6253 6390 6410-6411 6509-6510 6533 6546 6559 6589 6601 6634 6644 6692 6742 6855 6868 6995 7030 7076 7090 7105 7320 7331 7369 7680 7715 7767 7782 7789 7903 8074 8087 8093 8200 8205 8223 8232 8244 8246 8262 8267 8270-8271 8273 8275-8276 8279 8282 8291 8296 8304 8321 8329 8356-8357 8359 8385 8440 8443 8446 8448 8450 8565 8569 8575 8659 8667 8669 8685 8695 8697 8702 8794 8818 8846 8865 8867-8868 8889 8966-8967 8972 8991 9012 9015 9031 9044-9045 9051 9054 9057 9061 9068 9071 9082-9083 9087 9109 9123-9124 9155 9162 9166 9172 9175 9177 9180 9201 9204 9214-9215 9221 9224 9226-9227 9230-9231 9237 9240 9242 9244 9250 9252 9256-9257 9259 9266 9279 9288-9289 9311 9313-9314 9318 9320 9328-9330 9347-9349 9351 9353 9358-9359 9367 9369 9371 9377 9379 9386 9393 9399-9400 9418 9422 9426 9431 9434-9435 9437-9438 9456 9462-9463 9468 9470-9471 9480 9482 9484 9486 9508-9510 9516 9518 9536 9602 9604 9607-9608 9611 9621 9629 9635 9644 9646 9666-9667 9691-9692 9707-9708 9770 9779 9785 9805 9807 9811-9812 9816 9818 9829 9836 9840 9850 9852 9854-9855 9857 9859-9860 9870 9880 9883 9894 9897-9899 9907 9910 9914 9931 9935 9937 9939 9941 9944-9945 9949-9950 9953-9954 9957 9964 9968 9973-9974 9978 9982 9988 9993 10003 10009-10010 10016 10018 10024 10072 10077 10108 10112 10120-10122 10182-10183 10187 10199-10200 10207 10211 10215 10219 10224 10230 10232-10233 10257 10260 10264 10268 10295 10301 10303 10305 10308 10320 10323-10324 10345 10348 10356 10364 10372-10373 10379 10381 10387-10388 10391 10406 10417 10421 10431 10437 10440 10448 10451 10453 10457 10484 10487 10542 10553 10582-10583 10593 10595-10596 10602 10604 10615 10622-10623 10628 10632 10636 10646 10654 10668 10674-10675 10682 10702-10703 10711-10712 10714 10716 10726-10727 10739 10746 10748 10790 10796 10799 10810 10814 10862 10889 10894 10901 10904 10906 10911 10914 10934 10952 10960-10961 10965 10977 10992-10993 11003-11005 11007 11034 11040-11041 11044 11060 11067 11086 11091-11092 11098 11102 11110 11116-11117 11121 11147 11149 11152 11156 11178-11179 11189-11190 11203 11266 11270 11275 11277 11281 11289 11292-11293 11297 11318 11326 11344 11351 11368 11379 11393 11399 11425 11427 11436 11444 11450 11460 11520 11551 11580 11588 11591 11594 11613 11615 11668-11669 11700 11713 11719 11734 11736 11746 11757 11762 11764-11765 11986 12278 12387 12396-12397 12412-12413 12555 12561 12578 12897 12899 12965 12990 13583 13592 13674 13806 13915 14018 14248 14305 14502 14584 14586 14591 14730 14754 14777 14779 14827-14828 14830 14924 14931 14937 14942 14947 14950 14952 14959 14963 14967 14969 14972 14975 15057 15104 15106 15111 15141 15153 15168 15230 15282 15295 15309 15315 15340 15348 15352 15354 15358-15359 15914 15976 15993 15996 16002 16027 16030 16062 16074 16091 16116 16120 16266 16343 16802 16873-16875 16937 16940 16942 16990 17150 17172 17292 17298 17305-17306 17322 17328 17337 17671 17691 17750 17762 17773 17796 17811 17830 17983 17997 18003 18008 18036 18046 18109 18115 18124 18148 18163 18175 18185 18223 18225 18299 18329-18330 18333 18336 18407 18430 18465 18467-18468 18471 18474 18479-18481 18491 18498 18533 18560 18565 18571 18580 18592 18599 18608 18616 18634-18635 18648 18659 18692 18694 18697-18698 18700 18703 18715-18716 18720 18722 18724 18727 18732 18734 18736 18738 18742-18743 18750 18777 18780 18853 18855 18860-18861 18949 18954 19015 19027 19030-19031 19041 19051 19088 19092 19094 19096 19100-19102 19111 19120 19138 19230 19278-19279 19388 19391 19406 19416 19427 19457 19630 19700 19739 19743 19993-19994 20006 20010 20317 20551 20902 21854 22084 22227 22299 22697 22837 22851 22860 22872 22907 23056 23101 23191 23205 23208 23371 23390 23719 23751 24072 24081 24129 24157 24246 24309 24434 24472 24843 24962-24963 25327 25345 25356 25388 25406 25488 25490 25543 25608 25617 25648 25657 25662 25676 25693-25694 25732 25781 25813 25851-25853 25874 25876 25881 25884 25937 25940 25944 25980 26014 26021 26023 26025 26028 26035 26080-26081 26097-26098 26115 26118 26161 26164 26172 26187-26188 26190 26247 26249 26254 26276 26346-26347 26559 26598 26601 26704 26706 26708 26722 26724 26894 26914 26922 26975 26990 27003 27009 27014 27017 27020 27035 27045 27050 27056 27071 27076 27091 27094 27127 27132 27168 27228 27295 27299 27312 27316 27351 27358 27402 27421-27422 27430 27439 27450 27492 27494 27500 27515 27522 27539 27608 27623 27656 27659 27668 27671 27675 27686 27863 27897 27902 27910 27917 27947 27981 28031 28073 28076 28117 28123 28125 28127 28149 28168 28202 28253 28281-28282 28332 28360 28369 28418 28483-28484 28556 28690 28728 28731 28735 28747 28757 28780 28804-28805 28809 28821 28828 28850 28859 28896 28907 28909-28910 28932 28934 28941 28944 28946-28947 28949 28952 28967 28972-28973 28979 28981 28985 28993 28995-28996 28998 29001 29003 29006 29013 29022-29023 29045-29048 29052 29065 29067 29101 29107 29110-29111 29116-29117 29167 29171 29179 29210 29214 29216-29217 29231 29243 29249 29253 29256 29277 29286 29305 29317 29325 29354 29356-29357 29362 29376 29378 29395 29401 29404 29440 29446 29459 29465 29510-29511 29542 29550 29553 29565-29566 29582-29583 29605 29636 29655 29660 29674 29698 29706 29752 29829 29868 29877-29878 29920 29923 29928 30037-30039 30042 30065 30236 30285 30529 30720 30771-30772 30774 30776-30777 31058-31059 31104-31105 31116 31118 31145-31147 31374 31395 31398 31407 31410 31416-31417 31420 31422 31447 31453 31471 31604-31605 31619 31624 31650 31659-31660 31719 31748 31816 32047 32408 32413 32415 32439 32441 32446-32447 32459 32461 32482 32484 32486 32488 32491 32503 32674 32683 32803 32806 32849 32853 32860 32862-32863 32886 32893 32895 32983 33040-33041 33044 33055-33056 33059-33061 33063 33066 33072 33077 33081 33099-33101 33110 33112 33115 33117 33131 33133-33134 33138 33140-33142 33144 33146 33151-33152 33154 33156 33158 33169 33174 33177 33180 33221 33229 33234-33235 33318 33336 33438 33794-33795 33797 33811-33812 33818 33822-33823 33827 33830 33833 33836 33845 33850 33854 33859 33862 33868 33878 33882 33921 34240 35337 36525 36622 36863 36878 36883 36885-36886 36900-36901 37039 37051 37099 37374 37377-37378 37381 37388 37391 37400-37401 37403 37407 37413 37415 37417 37421 37429-37430 37434-37435 37441 37450 37474-37475 37504 37507 37516-37517 37535 37543-37544 37547 37553-37555 37564 37568-37570 37583 37604 37608 37794 37852 37905 38304 38464-38465 38467 38509 38597 38607 38917 38919 38921-38922 38928 38930-38931 38935-38936 38941 38947 38949 38951 38957-38958 38971 38976 38978 39048-39049 39072 39074 39083 39466 39541 39552 39886 40139 40596 40823 41189 41327 41434 41560 41723 41851 41971 41975 41980 42111 42241 42304 42363 42417 42444 42568 42571 42582 42592 42619-42620 42690 42713 42716 42844-42846 42856 42858-42859 42868 42875 42878 42887 42893 42909 42932 42934-42935 42941-42942 42948-42949 42961 42965 42977-42979 42981-42982 42984-42986 42989-42991 42997 43000-43002 43055 43133 43170 43226 43827 44305 44307 44309-44310 44317 44319 44356 44358 44364 44367-44368 44384-44385 44396 44719 44722 44728-44729 44770-44771 44774 44780 45000 45002-45003 45900-45901 46183 46188-46189 46263 46306 46314-46315 46339 46342 46344 46613 46620 46622 46807 46846 46977 47034 47062 47125 47744 47746 47755 47758-47759 47780 47793 47795 47798 47825 47853 47970-47971 47976 48023 48026-48027 48040 48042 48045-48048 48050 48059 48068 48070 48072 48089 48094 48109 48120 48122 48213 48389 48509 48597 48605 48612 49084 49087 49097 49100 49121 49130https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/676/A140?format=asciiOpticalInfrareddefaultJ/A+A/676/A140/tablec1Relevant information for each star used in this investigation, including a tag for each detected groupRAJ2000Right Ascension in decimal degrees (J2000)degpos.eq.ra;meta.mainDEJ2000Declination in decimal degrees (J2000)degpos.eq.dec;meta.mainSNRSpectral signal-to-noisepixel**-1stat.snrdoubleRVAPOGEE-2 radial velocitykm/sphys.veloc;pos.heliocentricfloatVscatterAPOGEE-2 radial velocity scatterkm/sphys.veloc.dispersiondoubleloggSurface gravitylog(cm.s**-2)phys.gravityfloate_loggUncertainty in logglog(cm.s**-2)stat.errorfloat[C/Fe]Abundance [C/Fe] from ASPCAPphys.abunddoublee_[C/Fe]Uncertainty in [C/Fe]stat.error;phys.abunddouble[N/Fe]Abundance [N/Fe] from ASPCAPphys.abunddoublee_[N/Fe]Uncertainty in [N/Fe]stat.error;phys.abunddouble[O/Fe]Abundance [O/Fe] from ASPCAPphys.abunddoublee_[O/Fe]Uncertainty in [O/Fe]stat.error;phys.abunddouble[Mg/Fe]Abundance [Mg/Fe] from ASPCAPphys.abunddoublee_[Mg/Fe]Uncertainty in [Mg/Fe]stat.error;phys.abunddouble[Al/Fe]Abundance [Al/Fe] from ASPCAPphys.abunddoublee_[Al/Fe]Uncertainty in [Al/Fe]stat.error;phys.abunddouble[Si/Fe]Abundance [Si/Fe] from ASPCAPphys.abunddoublee_[Si/Fe]Uncertainty in [Si/Fe]stat.error;phys.abunddouble[Ca/Fe]Abundance [Ca/Fe] from ASPCAPphys.abunddoublee_[Ca/Fe]Uncertainty in [Ca/Fe]stat.error;phys.abunddouble[Mn/Fe]Abundance [Mn/Fe] from ASPCAPphys.abunddoublee_[Mn/Fe]Uncertainty in [Mn/Fe]stat.error;phys.abunddouble[Fe/H]Abundance [Fe/H] from ASPCAPphys.abund.Fedoublee_[Fe/H]Uncertainty in [Fe/H]stat.error;phys.abund.Fedouble[Ni/Fe]Abundance [Ni/Fe] from ASPCAPphys.abunddoublee_[Ni/Fe]Uncertainty in [Ni/Fe]stat.error;phys.abunddoubleVRGalactocentric radial velocitykm/sspect.dopplerVeloc;pos.galactocentricdoubleVphiGalactocentric azimuthal velocitykm/sphys.veloc;pos.galactocentricdoubleRperiPerigalactocentric distancekpcpos.distance;src.orbitaldoublee_RperiUncertainty in PERIGALACTICONkpcstat.errordoubleRapoApogalactocentric distancekpcpos.distance;src.orbitaldoublee_RapoUncertainty in APOGALACTICONkpcstat.errordoubleEccOrbital eccentricitysrc.orbital.eccentricitydoublee_EccUncertainty in eccentricitystat.errordoubleZmaxMaximum vertical excursion from the Galactic planekpcsrc.orbitaldoublee_ZmaxUncertainty in Zmaxkpcstat.errordoubleEjJacobi energy100km**2.s**-2src.orbitaldoublee_EjUncertainty in Jacobi energy100km**2.s**-2stat.errordoubleEcharCharacteristic orbital energy100km**2.s**-2src.orbitaldoublee_EcharUncertainty in Characteristic orbital energy100km**2.s**-2stat.errordoubleLminMinimum z-component of angular momentum100km**2.s**-2phys.angMomentumfloate_LminUncertainty in minimum z-component of angular momentum100km**2.s**-2stat.errorfloatLmaxMaximum z-component of angular momentum100km**2.s**-2phys.angMomentumfloatrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintGaiaDR3GAIA DR3 source idmeta.idGroup[1/7] Group as determined by t-SNEmeta.idintSimbadSimbad column added by the CDSmeta.ref.urlcharAPOGEEAPOGEE id (2MHHMMSSss+DDMMSSs)meta.id;meta.mainchare_LmaxUncertainty in maximum z-component of angular momentum100km**2.s**-2stat.errorfloatRUWEGaia DR3 renormalized unit weight errorstat.errorfloatDistBayesian StarHorse distance, 50th percentilekpcpos.distancedoublee_DistUncertainty in Dist, error=(84th-16th)/2 percentilekpcstat.errordoublepmRAProper motion along RA, pmRAcos(DE), from Gaia DR3mas/yrpos.pm;pos.eq.radoublee_pmRAUncertainty in pmRAcos(DE) from Gaia DR3mas/yrstat.error;pos.pm;pos.eq.rafloatpmDEProper motion along DE from Gaia DR3mas/yrpos.pm;pos.eq.decfloate_pmDEUncertainty in pmDE from Gaia DR3mas/yrstat.error;pos.pm;pos.eq.decfloat