Masses and ages of red giants J/MNRAS/456/3655 ivo://CDS.VizieR/J/MNRAS/456/3655 doi:10.26093/cds/vizier.74563655 CDS Martig M. Fouesneau M. Rix H.-W. Ness M. Meszaros S.,Garcia-Hernandez D.A. Pinsonneault M. Serenelli A. Silva Aguirre V.,Zamora O. 2024-08-15T20:17:36Z 2016-11-25T09:27:52Z CDS support team CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France cds-question@unistra.fr giant-stars stellar-ages stellar-masses We show that the masses of red giant stars can be well predicted from their photospheric carbon and nitrogen abundances, in conjunction with their spectroscopic stellar labels logg, Teff, and [Fe/H]. This is qualitatively expected from mass-dependent post-main-sequence evolution. We here establish an empirical relation between these quantities by drawing on 1475 red giants with asteroseismic mass estimates from Kepler that also have spectroscopic labels from Apache Point Observatory Galactic Evolution Experiment (APOGEE) DR12. We assess the accuracy of our model, and find that it predicts stellar masses with fractional rms errors of about 14 percent (typically 0.2M_{sun}_). From these masses, we derive ages with rms errors of 40 percent. This empirical model allows us for the first time to make age determinations (in the range 1-13Gyr) for vast numbers of giant stars across the Galaxy. We apply our model to ~52000 stars in APOGEE DR12, for which no direct mass and age information was previously available. We find that these estimates highlight the vertical age structure of the Milky Way disc, and that the relation of age with [{alpha}/M] and metallicity is broadly consistent with established expectations based on detailed studies of the solar neighbourhood. 2016MNRAS.456.3655M https://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/456/3655 Catalog Research IsServedBy TAP VizieR generic service IsServedBy Conesearch service related-to II/246 : 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003) https://cds.unistra.fr/vizier-org/licences_vizier.html https://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/456/3655 https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/456/3655 http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/456/3655 https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/456/3655 https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/456/3655 http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/456/3655 GET text/xml+votable https://tapvizier.cds.unistra.fr/TAPVizieR/tap Cone search capability for table J/MNRAS/456/3655/table1 (Stellar parameters for stars in the training set, together with their "true" masses and ages as well as the masses and ages predicted by our models) https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/456/3655/table1? https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/456/3655/table1? http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/456/3655/table1? GET text/xml+votable 180.0 50000 true 284.6575833 48.3803889 0.005555555555555556 Cone search capability for table J/MNRAS/456/3655/table2 (Predicted masses and ages for stars in APOGEE DR12) https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/456/3655/table2? https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/456/3655/table2? http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/456/3655/table2? GET text/xml+votable 180.0 50000 true 0.0087917 63.4630556 0.005555555555555556 4/81 911 922-923 933-935 944-946 1385 1388 1521 5/19 36 137 214-215 253 280 310-311 316 320 322 328 330 333 336 339 344-345 350 352 354 356-358 360 362 367-369 372 384 386 397 407 413 424 436-437 440-441 444-445 447 451 455 457 470 484 488-489 491 493 495 508 633 636 695 733 738 742 745 749-751 755-756 760-761 764-766 785 787 792 794 798 805 807 809 811 823 826 831 835 842 897-898 904 907 910 915 917 921-922 933-935 937-938 942-943 954 964 987 1018-1019 1027 1074 1168 1192 1195 1213 1215 1233 1306 1334 1384 1387 1419 1477 1489 1491 1493 1495 1537 1539 1545 1574 1591 1600 1636 1671-1673 1680 1691 1699 1705 1719 1748-1749 1762 1773-1774 1820 1946 2022-2023 2089 2093 2104 2110 2216 2234 2241 2253 2267 2288 2293 2300 2314 2338 2359 2373 2416 2421 2426 2464 2471 2500 2502 2521 2530 2547 2549 2551 2553 2578 2580 2589 2620-2621 2645 2668 2687 2713-2714 2728 2775 2796-2797 2801 2824 2848 2858 2935 2998 3068-3069 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30264-30265 30267-30270 30272 30274 30280 30299 30301-30303 30321 30323 30330-30334 30340 30342-30343 30349 30358 30364 30380-30381 30383 30392-30394 30415 30426-30427 30437 30439 30452 30454 30456-30457 30472-30473 30485 30496 30498 30515 30524-30525 30527-30530 30532 30560 30562-30563 30568 30570 30617-30620 30622-30623 30640-30641 30644-30646 30675 30677-30679 30681 30683 30706-30707 30710-30713 30715 30746-30747 30757 30759 30772 30774 30776-30777 30780 30831 30880-30881 30883-30886 30966-30967 31138-31139 31317 31372 31374 31378 31392-31393 31395 31404-31405 31407-31408 31410-31411 31416-31418 31488-31489 31531 31580 31582-31583 31600-31601 31603 31745 31747 31753 31762 31768 32005-32007 32013 32023 32041-32043 32058 32071 32077 32079 32082-32083 32092 32094 32102 32112-32113 32115 32129 32131 32144 32147 32451 32457 32464 32466 32472 32474 32497 32509 32699 32701-32703 32744 32746-32747 32754 36689 36692 36727 36856 39915 39918-39919 39927 39933 39935 40610-40611 40622 40625 40627 40633 40655 40666-40667 40670 40674 40677 40679-40680 40692 40694 40696-40697 40737-40740 40742-40743 40798-40799 40817 40819 40825 40828-40829 40897 40952 40959 44719 44730-44731 44771 44847 44859 44986 47869 47871 48034-48035 48056 48058 48925 49130 https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/456/3655?format=ascii default J/MNRAS/456/3655/table1 Stellar parameters for stars in the training set, together with their "true" masses and ages as well as the masses and ages predicted by our models Ageout Predicted age Gyr time.age float recno Record number assigned by the VizieR team. Should Not be used for identification. meta.record int 2MASS 2MASS name (HHMMSSss+DDMMSSs) meta.id;meta.main char Teff Effective temperature K phys.temperature.effective int logg Surface gravity log(cm.s**-2) phys.gravity float [M/H] Metallicity, [M/H] phys.abund.Z float [C/M] Carbon abundance phys.abund float [N/M] Nitrogen abundance phys.abund float Massin True mass solMass phys.mass float e_Massin rms uncertainty on Min solMass stat.error float Massout Predicted mass solMass phys.mass float Agein True age Gyr time.age float e_Agein Error on Agein (lower value) Gyr stat.error float E_Agein Error on Agein (upper value) Gyr stat.error;stat.max float 2M Display the 2MASS data (Cutri et al. 2003, Cat. II/246) meta.ref.url char Simbad Simbad column added by the CDS meta.ref.url char _RA Positions from 2MASS name (right ascension part) deg pos.eq.ra;meta.main _DE Positions from 2MASS name (declination part) deg pos.eq.dec;meta.main
J/MNRAS/456/3655/table2 Predicted masses and ages for stars in APOGEE DR12 recno Record number assigned by the VizieR team. Should Not be used for identification. meta.record int 2MASS 2MASS name (HHMMSSss+DDMMSSs) meta.id;meta.main char Teff Effective temperature K phys.temperature.effective int logg Surface gravity log(cm.s**-2) phys.gravity float [M/H] Metallicity, [M/H] phys.abund.Z float [C/M] Carbon abundance phys.abund float [N/M] Nitrogen abundance phys.abund float Massout Predicted mass solMass phys.mass float Ageout Predicted age Gyr time.age float 2M Display the 2MASS data (Cutri et al. 2003, Cat. II/246) meta.ref.url char _RA Positions from 2MASS name (right ascension part) deg pos.eq.ra;meta.main indexed _DE Positions from 2MASS name (declination part) deg pos.eq.dec;meta.main indexed