J/A+A/663/A125ivo://CDS.VizieR/J/A+A/663/A125doi:10.26093/cds/vizier.36630125CDSPalla M.Santos-Peral P.Recio-Blanco A.Matteucci F.2022-11-13T17:16:03Z2022-07-19T13:10:52ZCDS support team

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

cds-question@unistra.frmilky-way-galaxychemical-abundancesspectroscopystellar-agesvisible-astronomyThe [Mg/Fe] abundance ratios are a fundamental fossil signature used to trace the chemical evolution of the disc and to divide it into low-{alpha} and high-{alpha} populations. Despite the huge observational and theoretical efforts, discrepancies between models and data are still present and several explanations have been put forward to explain the [{alpha}/Fe] bimodality. In this work we take advantage of a new AMBRE:HARPS dataset, which provides new more precise [Mg/Fe] estimations and reliable stellar ages for a subsample of stars, to study the [{alpha}/Fe] bimodality and the evolution of the solar neighbourhood. The data are compared with detailed chemical evolution models for the Milky Way, exploring the most used prescriptions for stellar yields and different formation scenarios for the Galactic disc (i.e. the delayed two-infall and the parallel models), including prescriptions for stellar radial migration. We see that most of the stellar yield prescriptions struggle to reproduce the observed trend of the data and that semi-empirical yields describe best the [Mg/Fe] evolution in the thick and thin discs. In particular, most of the yields still predict a steeper decrease of the [Mg/Fe] ratio at high metallicity than shown by the data.The bulk of the data are well reproduced by the parallel and two-infall scenarios, but both scenarios have problems in explaining the most metal-rich and metal-poor tails of the low-{alpha} data. These tails can be explained in light of radial migration from the inner and outer disc regions, respectively. Despite the evidence of stellar migration, it is difficult to estimate the actual contribution of stars from other parts of the disc to the solar vicinity in the data we adopt. However, the comparison between data and models suggests that peculiar histories of star formation, such as that of the two-infall model, are still needed to reproduce the observed distribution of stars.2022A&A...663A.125Phttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/663/A125CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/663/A125https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/663/A125http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/663/A125https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/663/A125https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/663/A125http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/663/A125GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/663/A125/mgfe-age ([M/H], [Mg/Fe] for stars of Santos-Peral et al. (2020A&A...639A.140S)) Ages for stars in Santos-Peral et al. (2021A&A...653A..85S))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/663/A125/mgfe-age?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/663/A125/mgfe-age?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/663/A125/mgfe-age?GETtext/xml+votable180.050000true4.6744475-8.05300170.0055555555555555566/60 137 513 4147 4206 4298 4313 4316 4398 4429 4437 4460 8197 8244 8249 8296 8463 8617 8723 12341 12352 12424 12498 12540 12556 12644 12983 16393 16408 16432 16502 16511 16518 16528 16543 16591 16603 16639 16649 16682 16707 16775 16837 16874 16883 16890 16931 16947 16986 16988 17035 17047 17137 17177 17206 17218 17249 17266 17314 17341 17358 17374 17419 17425 17435 17447 17496 17507 17529 17540-17541 17587 17607 17641 17657 17714 17730 17744 17768 17804 17876 17944 17954 17970 17993 18005 18026 18067 18139 18203 18369 18389 18428 18466 18548 18591 18614-18615 18637 18641 18673 18711 18766 18772 18785 18792 18835 19003 19072 19108 19153 19217 19345 19768 19808 19974 20072 20116 20492 20495 20557 20582 20593 20621 20633 20638 20640 20661 20667 20676 20691 20712 20739 20746 20766 20842 20873 20903 21013 21066 21080 21110 21117 21121 21125 21194 21211 21213 21276 21326 21400 21412 21477 21484 21508 21516 21538-21539 21550 21600 21612 21694 21696 21715 21738 21774 21779 21809 21838 21906 21912 21989 22036 22078 22118 22159 22446 22579 22590 22608 22611 22619 22708 22724 22746 22753 22760 22818 22837 22843 22931 22982 23061 23066 23084 23096-23097 23123 23138 23177 23342 23414 23661 24212 24597 24618 24695 24702 24713 24718 24729 24759 24769 24775 24809 24831 24876 24924-24925 25078 25121 25136 25225 25233 25241 25258 25279 25349 25378 25424 25473 25484 25512 25527 25554 25567 25578 25584 25593 25622 25636 25669 25697 25702 25756 25820 25826 25862 25880 25889 25906 25939 25981 26110 26126 26142 26183 26242 26256 26305 26468 26520 26547 26626 26636 26652 26655 26680 26768 26780 26790 26796 26812 26828 26888 26901 26906 26997 27018-27019 27030 27040 27053 27083 27130 27255 27462 27661 27741 28009 28209 28245 28322 28703 28719 28843 28874 28891 28894 28919 28928 28961 28987 29107 29235-29236 29238 29289 29295 29349 29410 29418 29513 29515 29521 29541 29598 29675 29838 29842 29900 29928 30041 30123 30177 30233 30308 30339 30450 30466 30512 30526 30529 30536 30630 30645 30720 30789 30825 30848 30862 30878 30890 30894 30919 30939 30943 30951 31015 31029 31048 31101 31130 31145 31334 31380 31393 31433 31503 31650 31697 31751 31813 32130 32297 32318 32368 32787 32838 32848 32853 32903 32912 32915 32986 32993 32998 33063 33067 33082 33086 33091 33122 33160 33179 33182 33204 33212 33214 33219 33243 33273 33357 33361 33377 33400 33418 33421 33427 33430 33456-33457 33510 33552 33555 33571 33590 33604 33608 33630 33649 33705 33709 33731 33782 33813 33879 33885 33890 33923 33945 33949 33963 33974 33990 34064 34073 34119 34173 34192 34199 34204 34213 34255 34290 34306 34308 34336 34350 34372 34392 34408 34425 34442 34446 34497 34515 34519 34530 34564 34577 34638 34674 34684 34695 34744 34807 34817 34856 34864 34947 34951 34983 35017 35036 35121 35152 35173-35174 35228 35230 35279 35339 35347 35351 35390 35415 35440 35454 35468 35533 35590 35615 35668 35691 35776 35779 35784 35786 35790 35811 35831 35839-35840 35858 35896 35907 35928 35954 35966 35968-35970 35985 36014-36015 36019 36089 36238 36285 36288 36363 36379 36453 36492 36540 36542 36590 36635 36693 36697 36723 36772 36784 36800 36813 36816 36926 36952 36954 36971 37018 37049 37074 37094 37130 37134 37164 37208 37232 37306 37308 37357 37368 37383 37408 37419 37422 37449 37501 37573 37583 37595 37636 37648 37660 37668 37679 37737 37789 37797 37807-37808 37831-37832 37944 37954-37955 37983 37995 38055 38064-38065 38099 38127 38138 38149 38162 38216 38229 38238 38260 38279 38283 38288 38311 38324 38339 38349 38378 38414-38415 38433-38434 38443 38462 38480 38545 38562 38566 38605 38677 38698 38724-38725 38728 38734 38738 38742-38743 38757 38776 38788 38792 38807 38813 38834 38836-38837 38857 38885 38905 38908 38936 38954-38955 38960 38971 38975 38998 39006 39030 39034 39074 39082 39093 39110 39112 39176 39201 39213 39219 39282-39283 39298 39314 39316 39321 39353 39364 39377 39419 39422 39425 39433 39461 39463 39487 39500 39516 39566 39570 39576 39584 39596 39600 39623 39676 39691 39709 39722 39733 39767 39774-39775 39813 39851 39854 39859 39877 39888 39915 39954 39977 39984 39986 40007 40019 40066 40078 40090 40101 40104-40105 40143 40302 40317 40375 40415 40442 40453 40480 40514 40567 40590 40662 40679 40686-40687 40692 40694 40703 40722 40741 40802 40853 40864 40921 40931-40932 40938 40970 40985 40988 41058 41094 41143 41167 41175 41204 41255 41272 41407 41443 41460 41463 41521 41524 41533 41564 41590-41591 41607 41611-41612 41671 41687 41723-41724 41752 41763 41853 41861 41899 41912-41913 41941 41949 41954 41969 41971 42006 42022 42044 42146 42166 42171 42179 42197 42200 42205 42212 42224 42245 42248 42274 42281 42285 42318 42326 42343 42360 42386 42448 42460 42479 42501 42510 42519 42527 42553 42570 42602 42632 42644 42700 42759 42769 42794 42814 42828 42845 42860 42892 42918 42928 42952 43001 43068 43177 43228 43258 43267 43287 43290 43310 43315 43345 43374 43544 43567 43577 43610 43639 43641 43649 43688 43724 43760 43771 43778 43781 43801 43813 43818 43847 43911 43928-43929 43944 43954 43960 43977 44005 44054 44115 44131 44150 44208 44243 44260 44262 44315 44340 44359 44398 44442 44557 44600 44608 44637 44648 44653 44683 44740 44792 44812 44879 44884 44887 44910 45034 45112 45121 45143 45182 45228 45265 45299 45309 45337 45420 45422 45430 45446 45457 45485 45502 45511 45559 45564 45589 45627 45641 45646 45656 45668-45669 45674 45682 45687 45717 45721 45752 45758 45823 45837 45865 45873 45907 45948 46009 46053 46074 46076 46080 46084 46100 46111 46135 46142 46171-46172 46193 46200 46203 46215 46234 46247 46252 46287 46306 46355 46357 46364 46421 46437 46494 46526 46544 46558 46603 46639-46640 46646 46664 46685 46713 46734 46768 46784 46805 46874 46944 46967 46978 47020 47030 47045 47065 47073 47137 47157 47184 47223 47253-47254 47364 47387 47407 47409 47580 47589-47590 47629 47647 47655 47674 47712 47740 47780 47795 47803 47842 47858 47894 47903 47930 47942 47994 48014 48022 48162 48172 48177 48182 48205 48260 48282 48310 48335 48350 48362 48402 48478 48490 48519 48530 48545 48607 48652 48664 48679 48705 48707 48731 48736 48757 48773 48807 48821 48846 48865 48870 48980 49028 49036 49060 49064 49097 49114 49128https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/663/A125?format=asciiOpticaldefaultJ/A+A/663/A125/mgfe-age[M/H], [Mg/Fe] for stars of Santos-Peral et al. (2020A&A...639A.140S)) Ages for stars in Santos-Peral et al. (2021A&A...653A..85S)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintGaiaDR2Gaia DR2 IDmeta.id;meta.main[M/H]Mean stellar metallicity (1)phys.abund.Z;stat.meanfloate_[M/H]Error associated to metallicitystat.error;phys.abundfloat[Mg/Fe]Magnesium abundancephys.abunddoublee_[Mg/Fe]Error associated to magnesiumstat.error;phys.abunddoubleAge? Stellar age (2)Gyrtime.agefloatnullablee_Age? Error associated to stellar age (2)Gyrstat.error;time.agefloatnullable_RAPositions from Gaia DR2 (right ascension part)degpos.eq.ra;meta.main_DEPositions from Gaia DR2 (declination part)degpos.eq.dec;meta.main