J/ApJ/797/21ivo://CDS.VizieR/J/ApJ/797/21doi:10.26093/cds/vizier.17970021CDSPlacco V.M.Frebel A.Beers T.C.Stancliffe R.J.2017-08-29T07:03:13Z2017-01-27T13:21:26ZCDS support team

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

cds-question@unistra.frmilky-way-galaxyhalo-starschemical-abundancesstellar-atmospherespopulation-ii-starsWe revisit the observed frequencies of carbon-enhanced metal-poor (CEMP) stars as a function of the metallicity in the Galaxy, using data from the literature with available high-resolution spectroscopy. Our analysis excludes stars exhibiting clear overabundances of neutron-capture elements and takes into account the expected depletion of surface carbon abundance that occurs due to CN processing on the upper red giant branch. This allows for the recovery of the initial carbon abundance of these stars, and thus for an accurate assessment of the frequencies of carbon-enhanced stars. The correction procedure we develop is based on stellar-evolution models and depends on the surface gravity, log g, of a given star.2014ApJ...797...21Phttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/797/21CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toIII/272 : RAVE 4th data release (Kordopatis+, 2013)J/A+A/354/169 : Metal-poor field stars abundances (Gratton+, 2000)J/ApJ/617/1091 : La and Eu abundances in 85 stars (Simmerer+, 2004)J/A+A/439/129 : HERES II. Spectroscopic analysis (Barklem+, 2005)J/AJ/132/85 : Equivalent width of 33 metal-poor RHB (Preston+, 2006)J/ApJ/652/1585 : Bright metal-poor stars from HES survey (Frebel+, 2006)J/ApJ/655/492 : Equivalent widths of 26 metal-poor stars (Aoki+, 2007)J/ApJ/658/1203 : Nitrogen-enhanced metal-poor stars (Johnson+, 2007)J/ApJ/681/1524 : Detailed abundances for 28 metal-poor stars (Lai+, 2008)J/ApJ/679/1549 : Metal-poor star CS 17435-00532 spectroscopy (Roederer+, 2008)J/AJ/139/1051 : Carbon-enhanced metal-poor stars in the GalaxyJ/ApJ/711/573 : Detailed abundances in a halo stellar streamJ/A+A/528/A92 : HERES VI. Gal. chemical evolution of Si and C (Zhang+, 2011)J/AJ/142/188 : Metal-poor stars from the HES using CH G-band (Placco+, 2011)J/ApJ/742/54 : CASH project II. 14 extremely metal-poor starsJ/MNRAS/418/284 : s-process in low-metallicity stars. II. (Bisterzo+, 2011)J/A+A/548/A34 : Abundances of Carbon-enhanced metal-poor stars (Allen+, 2012)J/ApJ/778/56 : Hamburg/ESO Survey extremely metal-poor stars (Cohen+, 2013)J/ApJ/773/33 : Chemical analysis of the metal-poor subgiant BD+44 493J/A+A/509/A93 : Carbon-enhanced metal-poor stars (Masseron+, 2010)J/ApJ/762/25 : The most metal-poor stars in HES and SDSS. I. (Norris+, 2013)J/ApJ/762/26 : Most metal-poor stars. II. 190 Gal. halo stars (Yong+, 2013)J/ApJ/781/40 : Metal-poor stars from HES survey. II. SpectroscopyJ/ApJ/814/121 : CASH project. III. The CEMP star HE0414-0343 (Hollek+, 2015)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/797/21https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/797/21http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/797/21https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/797/21https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/797/21http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/797/21GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/797/21/table3 (Data for literature stars)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/797/21/table3?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/797/21/table3?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/797/21/table3?GETtext/xml+votable180.050000true264.93997832.41655750.0055555555555555566/0 25 51 2067 2426 4854 5012 5093 5246 5723 5768 5775 6051 6159 6375 7456 7787 7830 8127 8197 8200 8201 8205 8228 8244 8258 8266 8314 8328 8766 8864 8930 9291 9298 9581 10147 10149 10209 10249 10340 10368 10430 10453 10476 11302 11543 12793 13020 15349 16400 16462 16503 16522 16540 16549 16569 16572 16587 16641 16651 16654 16659 16666 16670 16671 16679 16680 16795 16798 16814 16821 16854 16865 16880 16911 16984 16988 17021 17035 17036 17040 17056 17057 17062 17081 17095 17101 17170 17174 17190 17191 17197 17218 17221 17233 17234 17253 17280 17281 17326 17327 17343 17356 17357 17364 17380 17392 17406 17411 17412 17419 17420 17432 17448 17483 17497 17543 17545 17566 17578 17590 17598 17623 17642 17664 17679 17730 17757 17773 17788 17936 17938 17970 17986 17994 18056 18086 18089 18098 18226 18452 18467 18483 18503 18545 18553 18579 18608 18622 18634 18636 18637 18648 18653 18656 18663 18683 18707 18708 18719 18737 18797 18850 18883 18972 18973 19000 19017 19023 19055 19070 19073 19094 19136 19205 19209 19210 19211 19478 19485 19566 19602 19903 19923 19968 20330 21089 21096 21157 21188 22558 22600 22632 22635 22650 22662 22685 22766 23011 23094 23118 23144 23199 23207 23220 23225 23240 23304 23428 23467 24853 24887 24905 24918 24942 24975 24991 24994 24995 24999 25030 25047 25050 25051 25116 25197 25209 25299 25326 25357 25385 25413 25469 25470 25482 25511 25527 25549 25551 25554 25569 25574 25595 25639 25641 25677 25678 25693 25733 25753 25785 25786 25787 25805 25811 25819 25832 25836 25841 25887 25891 25926 25936 25948 25950 25956 25959 25963 25991 25993 26005 26019 26025 26030 26057 26114 26115 26162 26166 26176 26183 26186 26191 26205 26208 26210 26214 26220 26232 26241 26242 26246 26251 26284 26292 26296 26347 26366 26457 26534 26589 26611 26658 26886 26933 26944 26961 26994 26995 27021 27024 27030 27048 27065 27170 27176 27219 27322 27330 27589 27644 27763 27796 27898 27989 28054 28097 28223 28251 28540 28594 30041 30963 31094 31136 31238 31273 31377 31394 31395 31427 31528 31585 31595 31608 31719 31757 32352 32468 32553 32889 33260 33270 33464 33470 33471 33515 33526 33571 33596 33625 33642 33647 33653 33695 33708 33781 33831 33851 33883 33891 33989 34012 34019 34037 34046 34069 34078 34095 34115 34210 34222 34246 34249 34344 34425 34434 34438 34461 34462 34504 34507 34559 34574 34595 34708 34727 34751 34775 34844 34857 34876 35009 35166 35186 35238 35239 35354 35365 35395 35443 35469 35477 35517 35521 35532 35551 35561 35588 35652 35695 35752 35768 35782 35784 35801 35803 35889 35899 36228 36289 36365 36379 36426 36461 36503 36542 36583 36628 36670 36690 36691 36704 36705 36734 36737 36788 36789 36802 36806 36837 38399 38781 38868 40222 40259 40319 40437 40959 43774 43923 43938 43945 44016 44208 44542 44575 44580 44607 44617 44642 44654 44658 44671 44797 44806 44842 44870 44909 44917 44939 44974 44990 45023 45345 45401 45404 45406 45427 45470 45694 45790 45796 45797 45801 45806 45808 45818 45825 45904 45913 46023 46108 46155 46283 46302 46311 46486 46490 46492 46493 46506 46526 46532 46548 46565 46574 46614 46663 46665 46676 46677 46679 46685 46691 46704 46718 46720 46751 46760 46791 46792 46796 46801 46813 46828 46840 46848 46850 46860 46902 46907 46915 46958 47009 47012 47018 47022 47075 47344 47429 47436 47458 47519 47530 47541 47556 47698 48145 48160 48162 48173 48221 48234 48249 48286 48400 48451 48484 48485 48501 48508 48517 48526 48555 48578 48591 48614 48625 48628 48631 48719 48722 48734 48798 48824 48862 49078https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/797/21?format=asciidefaultJ/ApJ/797/21/table3Data for literature starsSimbadNameSimbad column added by the CDSmeta.idcharNameStellar identifiermeta.id;meta.maincharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintTeff[4000/7200] Effective temperatureKphys.temperature.effectiveintlog(g)[0.1/5] Log of the surface gravitylog(cm.s**-2)phys.gravityfloatlog(L)[-1.3/3.77] Log of the luminosity (1)solLumphys.luminosityfloat[Fe/H][-5.65/-2] Metallicityphys.abund.Zfloatl_[N/Fe][<={}] Limit flag on [N/Fe]meta.code.error;phys.abundchar[N/Fe][-1.12/4.23]? Log N/Fe number abundance ratiometa.idfloatnullable[C/Fe][-1.19/3.9] Log C/Fe number abundance ratiometa.idfloatDel[C/Fe][0/0.77] The [C/Fe] correction for [N/Fe]=0arith.factorfloat[C/Fe]c[-1.18/3.91] Correct [C/Fe]phys.abundfloatl_[Sr/Fe][<={}] Limit flag on [Sr/Fe]meta.code.error;phys.abundchar[Sr/Fe][-2.14/1.77]? Log Sr/Fe number abundance ratiometa.idfloatnullablel_[Ba/Fe][<={}] Limit flag on [Ba/Fe]meta.code.error;phys.abundchar[Ba/Fe][-2.41/3.4]? Log Ba/Fe number abundance ratiometa.idfloatnullableClassClass (2)meta.code.classcharI/O[0/1]? The I/O rejection flag (3)meta.codeintnullableRefReference (see refs.dat file)meta.ref;pos.framechar_RARight Ascension (J2000) from SIMBAD (not part of the original data)degpos.eq.ra;meta.main_DEDeclination (J2000) from SIMBAD (not part of the original data)degpos.eq.dec;meta.mainJ/ApJ/797/21/refsReferencesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRefReferencemeta.ref;pos.frame;meta.maincharprimaryBibCodeBibcode of the referencemeta.bib.bibcodecharComCommentmeta.notechar