J/ApJ/823/114ivo://CDS.VizieR/J/ApJ/823/114doi:10.26093/cds/vizier.18230114CDSNess M.Hogg D.W.Rix H.-W.Martig M.Pinsonneault M.H.Ho A.Y.Q.2018-10-12T12:35:34Z2016-09-22T13:13:14ZCDS support team

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

cds-question@unistra.frgiant-starsstellar-massesstellar-ageschemical-abundancesinfrared-astronomyspectroscopyThe mass of a star is arguably its most fundamental parameter. For red giant stars, tracers luminous enough to be observed across the Galaxy, mass implies a stellar evolution age. It has proven to be extremely difficult to infer ages and masses directly from red giant spectra using existing methods. From the Kepler and APOGEE surveys, samples of several thousand stars exist with high-quality spectra and asteroseismic masses. Here we show that from these data we can build a data-driven spectral model using The Cannon, which can determine stellar masses to ~0.07dex from APOGEE DR12 spectra of red giants; these imply age estimates accurate to ~0.2dex (40%). We show that The Cannon constrains these ages foremost from spectral regions with CN absorption lines, elements whose surface abundances reflect mass-dependent dredge-up. We deliver an unprecedented catalog of 70000 giants (including 20000 red clump stars) with mass and age estimates, spanning the entire disk (from the Galactic center to R~20kpc). We show that the age information in the spectra is not simply a corollary of the birth-material abundances [Fe/H] and [{alpha}/Fe], and that, even within a monoabundance population of stars, there are age variations that vary sensibly with Galactic position. Such stellar age constraints across the Milky Way open up new avenues in Galactic archeology.2016ApJ...823..114Nhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/823/114CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/ApJ/819/2 : APOGEE kinematics. I. Galactic bulge overview (Ness+, 2016)J/ApJS/221/24 : SDSS-III APOGEE H-band spectral line lists (Shetrone+, 2015)J/MNRAS/452/2127 : Fundamental param. of Kepler stars (Silva Aguirre+, 2015)J/ApJ/808/16 : The Cannon: new approach to determine abundances (Ness+, 2015)J/A+A/577/A9 : Sc, V, Mn, and Co in Milky Way stars (Battistini+, 2015)J/ApJS/215/19 : APOKASC catalog of Kepler red giants (Pinsonneault+, 2014)J/ApJ/794/125 : IN-SYNC. I. APOGEE stellar parameters (Cottaar+, 2014)J/AJ/146/133 : Stellar parameters from SDSS-III APOGEE DR10 (Meszaros+, 2013)J/A+A/549/A147 : Abundances of microlensed Bulge dwarf stars V. (Bensby+, 2013)J/A+A/530/A138 : Geneva-Copenhagen survey re-analysis (Casagrande+, 2011)http://www.sdss3.org/ : SDSS-III home pagehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/823/114https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/823/114http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/823/114https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/823/114https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/823/114http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/823/114GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/823/114/table1 (Stellar parameters, masses and ages as determined by The Cannon for APOGEE giants)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/823/114/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/823/114/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/823/114/table1?GETtext/xml+votable180.050000true323.912166742.49741670.0055555555555555563/128 192 279 283 284 295 299 300 304 345 347 348 359 363 364 368 471 472 476 487 496 4/0 1 2 4 256 259 516 520 772 776 1115 1127 1131 1140 1144 1175 1191 1195 1204 1208 1220 1335 1342 1355 1356 1358 1359 1367 1371 1372 1374 1376 1377 1379 1384 1385 1387 1396 1400 1429 1431 1435 1447 1451 1460 1464 1476 1480 1598 1599 1626 1628 1630 1643 1648 1649 1650 1652 1691 1692 1694 1710 1713 1716 1728 1730 1731 1732 1847 1851 1852 1853 1855 1867 1870 1879 1883 1894 1895 1896 1898 1899 1900 1901 1902 1908 1912 1927 1941 1943 1947 1959 1963 1969 1972 1976 1988 1992 5/12 13 20 21 22 24 25 26 32 33 35 36 37 40 41 42 1030 1033 1034 1035 1041 1044 1045 1046 1050 1056 1057 1059 1060 1065 1066 2068 2070 2072 2074 2084 2085 2089 3092 3093 3094 3096 3097 3098 3108 3109 3110 3112 3114 4381 4426 4439 4443 4444 4445 4447 4454 4455 4459 4507 4519 4523 4564 4565 4566 4568 4570 4580 4581 4584 4586 4646 4647 4653 4664 4666 4695 4699 4711 4715 4716 4717 4718 4744 4747 4753 4756 4758 4759 4763 4772 4774 4775 4779 4820 4821 4822 4824 4825 4826 4836 4837 4840 4841 4842 4884 4885 4886 4888 4890 4896 4898 4899 4900 4901 4902 4904 4905 5333 5334 5335 5337 5351 5356 5357 5359 5365 5402 5404 5405 5407 5413 5414 5415 5417 5418 5419 5430 5440 5441 5443 5450 5452 5453 5455 5460 5461 5463 5466 5472 5475 5477 5478 5479 5482 5483 5493 5494 5495 5500 5501 5503 5512 5513 5515 5545 5547 5588 5589 5590 5592 5593 5594 5604 5605 5606 5608 5609 5610 5712 5713 5715 5721 5723 5735 5739 5783 5787 5799 5801 5803 5844 5845 5846 5848 5849 5850 5860 5861 5862 5864 5865 5866 5908 5909 5910 5912 5913 5914 5924 5925 5926 5928 5929 5930 6358 6364 6367 6373 6375 6381 6384 6386 6387 6390 6427 6430 6437 6444 6446 6447 6450 6452 6455 6457 6462 6468 6487 6490 6491 6492 6493 6494 6498 6503 6509 6510 6511 6517 6518 6524 6527 6528 6531 6538 6540 6543 6544 6549 6551 6553 6555 6556 6557 6558 6561 6563 6566 6569 6570 6571 6576 6577 6580 6582 6583 6584 6586 6589 6604 6605 6606 6612 6614 6616 6618 6624 6625 6627 6628 6632 6679 6683 6686 6709 6711 6720 6722 6723 6726 6728 6729 6731 6740 6741 6743 6747 6749 6754 6756 6757 6759 6760 6761 6763 6773 6774 6775 6780 6781 6783 6794 6817 6822 6823 6846 6848 6849 6858 6859 6860 6861 6863 6868 6872 6873 6874 6881 6916 6917 6918 6934 6936 6937 6938 6945 6946 6948 6949 6950 6952 6953 7381 7382 7383 7385 7386 7387 7397 7399 7401 7416 7417 7419 7461 7462 7466 7467 7472 7474 7475 7484 7486 7487 7511 7515 7527 7531 7569 7570 7571 7573 7574 7575 7588 7589 7590 7612 7613 7615 7636 7637 7638 7640 7641 7642 7652 7653 7654 7656 7657 7658 7706 7721 7726 7728 7729 7731 7733 7734 7740 7741 7743 7745 7747 7748 7749 7754 7756 7757 7759 7760 7762 7763 7769 7770 7771 7776 7778 7779 7780 7782 7783 7785 7786 7787 7813 7826 7831 7833 7842 7849 7851 7860 7861 7865 7866 7867 7880 7882 7883 7885 7892 7893 7894 7896 7908 7910 7913 7958 7960 7961 7962 7972 7973 7974 7976 7978 10198 10205 10215 10232 10235 11225 11230 11243 11253 12247 6/56 58 59 60 61 63 92 108 112 137 152 153 154 172 176 192 256 512 4114 4117 4124 4127 4128 4129 4131 4160 4161 4163 4169 4172 4173 4175 4188 4194 4195 4204 4232 4233 4235 4244 4245 4246 4248 4249 4250 4256 4258 4259 4272 4288 4608 8276 8277 8278 8292 8293 8294 8300 8304 8344 8345 8347 8348 8353 8354 8355 8360 8361 8362 8368 8384 8704 12380 12396 12400 12444 12452 12453 12454 12460 12464 12480 12544 12800 17257 17345 17349 17368 17498 17499 17509 17520 17521 17523 17529 17532 17533 17534 17750 17751 17753 17754 17755 17765 17766 17767 17769 17770 17771 17784 17785 17786 17795 17796 17798 17804 17805 17807 17813 17814 17815 17829 17830 17831 17833 17834 17835 18005 18006 18007 18009 18011 18012 18013 18015 18021 18022 18023 18025 18026 18027 18069 18070 18071 18073 18074 18075 18085 18086 18087 18089 18090 18091 18268 18276 18277 18278 18284 18288 18328 18329 18330 18340 18341 18342 18348 18368 18582 18609 18621 18623 18662 18668 18670 18671 18773 18774 18775 18777 18778 18779 18789 18790 18791 18793 18794 18795 18837 18838 18839 18841 18843 18853 18854 18855 18857 18858 18859 18876 18878 18879 18954 18980 18982 18983 18984 18985 18987 19000 19002 19009 19021 19029 19030 19031 19045 19046 19047 19049 19050 19051 19077 19079 19093 19094 19095 19109 19110 19111 19113 19114 19115 19308 19312 19352 19353 19354 19372 19376 19392 19548 19556 19557 19558 19564 19568 19588 19590 19591 19612 19624 19625 19626 19628 19632 19648 19712 19968 20991 21327 21356 21357 21359 21395 21398 21399 21401 21402 21403 21413 21414 21415 21420 21421 21432 21433 21435 21448 21450 21451 21456 21457 21459 21468 21469 21471 21490 21496 21498 21499 21567 21583 21589 21593 21594 21595 21598 21605 21612 21614 21615 21625 21647 21651 21667 21712 21714 21715 21717 21724 21726 21768 21769 21771 21784 21786 21787 21797 21816 21817 21819 21825 21828 21829 21831 21848 21849 21850 21861 21862 21863 21870 21892 21894 21895 21897 21906 21920 21922 21925 21926 21927 21970 22008 22009 22011 22056 22057 22059 22176 22177 22179 22185 22186 22187 22364 22380 22428 22444 22448 22804 22805 22856 22857 22859 22889 22890 22891 22933 22934 22935 22937 22938 22939 22949 22950 22951 22953 22954 22955 23125 23126 23127 23129 23130 23131 23141 23142 23143 23145 23146 23147 23182 23189 23190 23191 23193 23194 23195 23201 23209 23210 23211 23388 23404 23408 23452 23468 23472 23488 23644 23660 23664 23708 23724 23728 23744 23808 24064 25087 25407 25423 25429 25431 25438 25445 25449 25450 25451 25452 25454 25455 25460 25462 25463 25465 25467 25491 25497 25499 25513 25515 25518 25521 25533 25540 25542 25552 25554 25555 25556 25557 25559 25564 25566 25567 25702 25703 25705 25757 25765 25766 25767 25770 25771 25782 25792 25794 25795 25796 25797 25799 25804 25806 25807 25812 25814 25815 25816 25817 25819 25824 25825 25832 25834 25836 25837 25839 25840 25842 25843 25844 25845 25847 25852 25854 25855 25860 25861 25863 25876 25878 25880 25881 25883 25884 25886 25887 25908 25909 25911 25928 25930 25931 25941 25942 25943 25945 25946 25947 25952 25953 25955 25957 25958 25959 25980 25982 25983 26005 26006 26007 26009 26010 26011 26032 26033 26034 26065 26066 26067 26076 26077 26079 26100 26102 26103 26105 26106 26107 26116 26118 26119 26120 26121 26123 26129 26132 26133 26135 26136 26138 26139 26146 26148 26149 26158 26164 26166 26167 26168 26169 26171 26182 26184 26187 26188 26189 26191 26193 26201 26202 26203 26209 26216 26217 26218 26236 26237 26238 26240 26241 26243 26248 26249 26258 26260 26261 26269 26270 26271 26272 26274 26313 26316 26317 26319 26324 26327 26348 26350 26351 26352 26353 26355 26361 26365 26366 26367 26429 26430 26431 26452 26454 26468 26469 26470 26476 26504 26505 26507 26516 26517 26518 26520 26521 26522 26532 26533 26534 26536 26537 26538 26544 26703 26707 26708 26710 26711 26713 26715 26723 26726 26727 26729 26731 26736 26737 26739 26740 26741 26742 26750 26751 26821 26823 26832 26834 26835 26869 26871 26884 26886 26887 26921 26923 26928 26929 26930 26932 26934 26936 26938 26939 26940 26941 26942 26948 26949 26951 26957 26968 26969 26971 26978 26981 26982 26986 26987 26992 26993 26994 27000 27002 27003 27004 27005 27006 27008 27015 27021 27033 27034 27035 27049 27050 27051 27088 27089 27091 27128 27130 27168 27170 27180 27182 27222 27227 27230 27231 27249 27252 27253 27255 27264 27265 27267 27276 27277 27279 27280 27282 27283 27286 27287 27305 27306 27307 27310 27311 27312 27313 27315 27316 27317 27319 27324 27327 27336 27337 27339 27340 27342 27378 27382 27390 27391 27401 27402 27404 27405 27407 27424 27426 27427 27430 27431 27449 27450 27451 27476 27477 27478 27480 27481 27482 27504 27521 27536 27538 27539 27540 27541 27542 27544 27545 27546 27584 27676 27677 27679 27728 27730 27733 27756 27777 27778 27790 27791 27804 27816 27817 27818 27904 28160 29183 29503 29519 29523 29539 29593 29594 29595 29603 29610 29611 29613 29614 29615 29672 29674 29675 29802 29803 29843 29852 29854 29855 29859 29861 29862 29863 29892 29894 29895 29914 29940 29942 29943 30037 30038 30039 30041 30042 30043 30053 30054 30055 30057 30058 30059 30101 30102 30103 30105 30106 30107 30117 30118 30119 30121 30122 30123 30273 30274 30275 30288 30290 30291 30364 30366 30367 30457 30458 30556 30572 30576 30620 30636 30640 30656 30783 30809 30810 30811 30812 30814 30815 30821 30822 30823 30829 30830 30863 30868 30869 30871 30874 30892 30893 30895 30896 30898 30908 30910 30911 30920 30921 30923 30929 30930 30941 30948 30949 30951 30968 30969 30971 30976 30977 30979 30985 31000 31002 31003 31005 31008 31010 31011 31020 31022 31023 31045 31046 31047 31072 31073 31075 31108 31110 31111 31125 31126 31127 31137 31138 31249 31251 31260 31261 31263 31296 31298 31299 31310 31311 31316 31317 31318 31321 31322 31323 31329 31341 31343 31360 31362 31363 31372 31374 31375 31381 31382 31385 31386 31387 31389 31390 31391 31392 31393 31395 31401 31402 31403 31431 31432 31434 31436 31437 31450 31452 31453 31455 31456 31458 31459 31477 31479 31481 31483 31485 31486 31487 31489 31492 31493 31495 31496 31499 31500 31501 31525 31526 31536 31544 31546 31549 31550 31551 31588 31590 31591 31592 31593 31595 31596 31638 31639 31644 31648 31649 31651 31656 31658 31664 31824 31826 31827 31828 31829 31830 31836 31856 31900 31908 31909 31910 31920 31936 32000 32256 36711 36717 36734 36817 36820 36823 40787 40796 40798 40799 40816 40817 40819 40828 40829 40831 40851 40854 40857 40858 40859 40873 40874 40875 40884 40885 40887 40904 40906 40907 40934 40935 40936 40937 40939 40954 44908 44909 44911 44912 44914 44915 44926 44927 44963 44966 44967 44968 44969 44971 44986 45008 45009 45011 45020 45021 48982 48983 48985 48987 49013 49015https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/823/114?format=asciiInfrareddefaultJ/ApJ/823/114/table1Stellar parameters, masses and ages as determined by The Cannon for APOGEE giantsTypeRed giant type (1)meta.code.classcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordint2MASS2MASS identifier (HHMMSSss+DDMMSSs; J2000)meta.id;meta.maincharTeff[4054/5120] Effective temperatureKphys.temperature.effectivefloate_Teff[0.7/73] Uncertainty in Teff (6)Kstat.error;phys.temperature.effectivefloatlog(g)[1.3/3.4] log surface gravitylog(cm.s**-2)phys.gravityfloate_log(g)[0.004/0.2] Uncertainty in log(g) (6)log(cm.s**-2)stat.errorfloat[Fe/H][-0.9/0.4] log Fe/H number abundance (2)log(Sun)meta.idfloate_[Fe/H][0.001/0.06] Uncertainty in [Fe/H] (6)log(Sun)stat.error;phys.abund.Fefloat[a/Fe][-0.03/0.3] log {alpha}/Fe number abundance (2)log(Sun)phys.massfloate_[a/Fe][0.001/0.03] Uncertainty in [a/Fe] (6)log(Sun)stat.error;phys.abundfloatlnM[-1.1/1.9] ln stellar mass (3)log(solMass)phys.massdoublee_lnM[0.006/0.3] Uncertainty in lnM (6)log(solMass)stat.errorfloatlnAge[-2.8/5.3] ln stellar age (4)log(Gyr)time.agedoublee_lnAge[0.01/0.6] Uncertainty in lnAge (6)log(Gyr)stat.errorfloatchi2[0.1/24.3] The {chi}^2^ statistic (5)stat.fit.chi2floatRgal[-13.25/21.77] Galactocentric radiuskpcpos.distance;pos.galactocentricfloatSimbadSimbad column added by the CDSmeta.ref.urlchar_RAPositions from 2MASS names (right ascension part)degpos.eq.ra;meta.mainindexed_DEPositions from 2MASS names (declination part)degpos.eq.dec;meta.mainindexed