J/ApJS/262/8ivo://CDS.VizieR/J/ApJS/262/8doi:10.26093/cds/vizier.22620008CDSPlacco V.M.Almeida-Fernandes F.Arentsen A.Lee Y.S.Schoenell W.,Ribeiro T.Kanaan A.2024-02-06T12:47:47Z2022-11-28T09:01:10ZCDS support team

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

cds-question@unistra.frchemically-peculiar-starsinfrared-photometryvisible-astronomyWide-band photometrychemical-abundancesThis work presents the medium-resolution (R~1500) spectroscopic follow-up of 522 low-metallicity star candidates from the Southern Photometric Local Universe Survey (S-PLUS). The objects were selected from narrowband photometry, taking advantage of the metallicity-sensitive S-PLUS colors. The follow-up observations were conducted with the Blanco and Gemini South telescopes, using the COSMOS and GMOS spectrographs, respectively. The stellar atmospheric parameters (Teff, logg, and [Fe/H]), as well as carbon and {alpha}-element abundances, were calculated for the program stars in order to assess the efficacy of the color selection. Results show that 92_-3_^+2^% of the observed stars have [Fe/H]<=-1.0, 83_-3_^+3^% have [Fe/H]<=-2.0, and 15_-3_^+3^% have [Fe/H]<=-3.0, including two ultra metal-poor stars ([Fe/H]<=-4.0). The 80th percentile for the metallicity cumulative distribution function of the observed sample is [Fe/H]=-2.04. The sample also includes 68 carbon-enhanced metal-poor stars. Based on the calculated metallicities, further S-PLUS color cuts are proposed, which can increase the fractions of stars with [Fe/H]<=-1.0 and <=-2.0 to 98% and 88%, respectively. Such high success rates enable targeted high-resolution spectroscopic follow-up efforts, as well as provide selection criteria for fiber-fed multiplex spectroscopic surveys.2022ApJS..262....8Phttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJS/262/8CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toII/246 : 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)II/358 : SkyMapper Southern Sky Survey. DR1.1 (Wolf+, 2018)J/AJ/128/1177 : Galactic stellar abundances (Venn+, 2004)J/ApJ/655/492 : Equivalent widths of 26 metal-poor stars (Aoki+, 2007)J/AJ/136/2050 : SEGUE stellar parameter pipeline. II. (Lee+, 2008)J/AJ/137/4377 : List of SEGUE plate pairs (Yanny+, 2009)J/A+A/512/A54 : Teff and Fbol from Infrared Flux Method (Casagrande+, 2010)J/ApJ/710/1627 : Mid-IR photometry of cold brown dwarfs (Leggett+, 2010)J/A+A/509/A93 : Carbon-enhanced metal-poor stars (Masseron+, 2010)J/AJ/141/90 : SEGUE stellar parameter pipeline. V. (Lee+, 2011)J/ApJ/762/25 : The most metal-poor stars in HES & SDSS. I. (Norris+, 2013)J/ApJ/794/58 : Metal-poor stars in the Galaxy thick disk (Beers+, 2014)J/A+A/571/A47 : Extensive linelist of CH in stellar atm. (Masseron+, 2014)J/ApJ/797/21 : Carbon-enhanced metal-poor stars (Placco+, 2014)J/A+A/579/A28 : Abundances of 3 CEMP stars (Bonifacio+, 2015)J/ApJ/833/20 : Carbon-enhanced metal-poor star abundances (Yoon+, 2016)J/ApJ/835/81 : Bright metal-poor stars from HES Survey. II. (Beers+, 2017)J/MNRAS/472/2963 : Metallicities of Pristine stars (Youakim+, 2017)J/AJ/155/256 : Sp. validation of RAVE metal-poor stars (Placco+, 2018)J/ApJ/870/122 : Sp. of low-metallicity star candidates (Placco+, 2019)J/ApJ/891/39 : LAMOST DR3 very metal-poor stars of the halo (Yuan+, 2020)J/ApJS/254/31 : Phot. metallicities of stars in SkyMapper DR2 (Chiti+, 2021)J/ApJ/907/10 : The VMP HK/HES stars (Limberg+, 2021)J/ApJ/913/11 : Sp. follow-up of bright metal-poor stars (Limberg+, 2021)J/ApJS/259/60 : SEGUE-2 updated stellar parameter pipeline (Rockosi+, 2022)J/ApJ/926/26 : DTGs of metal-poor stars. I. (Shank+, 2022)http://splus.cloud/ : S-PLUS data access home pagehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJS/262/8https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJS/262/8http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJS/262/8https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJS/262/8https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJS/262/8http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJS/262/8GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJS/262/8/targets (Observing details (Table 1), Southern Photometric Local Universe Survey (S-PLUS) photometry (Table 2) and stellar parameters and abundances from the n-SSPP (Table 3))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJS/262/8/targets?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJS/262/8/targets?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJS/262/8/targets?GETtext/xml+votable180.050000true1.191.0210.0055555555555555565/7525 11070 6/8229-8231 12290 16461 17756 17767 17828 17841 18024 18087 18097 18687 18749 18751 18765 18779 18786 18790 18833 18850 18853 18855 18861 18975 19022 19026 19028 19033 19042-19043 19046-19047 19049 19057 19085 19091 19102 19109 19112 19118 19121 19138 19457 23139 23142-23143 23145-23146 23148-23150 23181 23187-23188 23192 23206 23211-23213 23217-23218 23232-23234 24826 24957 24959 25002 25023 25042 25044 25046 25049 25060 25066 25074 25107 25111 25115 25118 25132 25135-25137 25139-25140 25143-25145 25150 25155-25157 25159 25162-25163 25165-25170 25173-25174 25176-25177 25179 25181 25184 25187-25188 25193-25195 25198 25201 25205 25220 25222-25223 25225 25228 25234 25238 25246 25258-25260 25263 25273-25274 25280 25363 25480 25590 25615 25620-25622 25625 25630-25631 25636-25637 25639 25641 25643-25644 25648 25650-25654 25660-25661 25663 25666-25667 25670-25671 25674 25677-25678 25682 25697 25702 25704-25706 25708-25709 25715 25717-25720 25723-25724 25726 25728-25729 25735 25740 25756 25793 25795 25799-25801 25808 25888 25898 25990 25993 25997 26036 26077 26195 26199 26252 26254 26258 26270 26272 26276 26281 26290 26624-26625 26630 26635 26639 26656 26658 26660-26661 26667 26752 26755 26761 26779 26789 26797 26950 27236-27237 27250 27257 30015 30030 30033 30035-30036 30038 30043 30045 30050 30053 30055-30057 30060 30062 30064 30096-30098 30105 30107-30110 30144-30146 33633 33762 34012 34021 34023 34029 34033 34045-34046 34178 34185 34202 34211 34216-34217 34226 34238 34389-34390 34393 34417 34419 34421 34423 34426 34513 34519 34525 34535 34561 34571 34579 34585 34589 34596 34605 34609 34612 34630 34633 34636 34692-34693 35187 35325 35442 35478 35572 35575 35614 35627 35629 35643 35682 35685 35691 35699 35715 35717 35727-35728 35730 35739 35747 35753 35776 35781 35887 35892-35893 35914-35915 35939 36004 36006 38909 40269 40271-40272 40275 40281 40287 40301 40304-40305 40310 40312 40405 44259-44260 44262-44263 44274 44286 44559 44562 44568 44625 44733 44776 44778-44779 44782 46022 46029 46043 46065 46078 46426 46763 46998 48141 48145 48151 48183 48220 48230 48234 48251 48336 48344 484462.040811542443644e-19 6.090060298487514e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJS/262/8?format=asciiOpticalInfrareddefaultJ/ApJS/262/8/targetsObserving details (Table 1), Southern Photometric Local Universe Survey (S-PLUS) photometry (Table 2) and stellar parameters and abundances from the n-SSPP (Table 3)e_rmag[0/0.02] Uncertainty in rmagmagstat.error;phot.magfloatJ0660[11.8/16.83] Narrow H{alpha} band J0660 magnitudemagphot.mag;em.optfloate_J0660[0/0.04] Uncertainty in J0660magstat.errorfloatimag[11.37/16.7] SDSS i band AB magnitudemagphot.mag;em.opt.Ifloate_imag[0/0.02] Uncertainty in imagmagstat.error;phot.magfloatJ0861[11.4/16.7] Narrow Ca triplet band J0861 magnitudemagphot.mag;em.optfloate_J0861[0.001/0.06] Uncertainty in J0861magstat.errorfloatzmag[11.19/16.6] SDSS z band AB magnitudemagphot.mag;em.opt.Ifloat2MASS2MASS identifier (JHHMMSSss+DDMMSSs)meta.idcharTelTelescope identifier ("Blanco" or "Gemini-South")meta.id;instr.telcharInstInstrument identifiermeta.id;instrcharPIDProposal identifiermeta.id;obscharSimbadSimbad column added by the CDSmeta.ref.urlcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSPLUSS-PLUS identifier (JHHMMSS.ss+DDMMSS.s)meta.id;meta.maincharRAJ2000Hour of Right Ascension (J2000)pos.eq.ra;meta.mainDEJ2000Degree of Declination (J2000)pos.eq.dec;meta.mainGLON[0.47/357.8] Galactic longitudedegpos.galactic.lonGLAT[-87.1/63.6] Galactic latitudedegpos.galactic.latfloatObs[2019/2022] Year of the observation; UTCtime.epochExp[90/1920] Exposure timestime.duration;obs.exposureintuJAVA[13.62/18.6]? Modified SDSS u band AB magnitudemagphot.mag;em.opt.Ufloatnullablee_uJAVA[0.001/0.05]? Uncertainty in uJAVAmagstat.errorfloatnullableJ0378[13.2/18.12] Narrow [OII] band J0378 magnitudemagphot.mag;em.optfloate_J0378[0.001/0.08] Uncertainty in J0378magstat.errorfloatJ0395[13/17.91] Narrow CaII H+K band J0395 magnitudemagphot.mag;em.optfloate_J0395[0.002/0.2] Uncertainty in J0395magstat.errorfloatJ0410[12.68/17.8] Narrow H{delta} band J0410 magnitudemagphot.mag;em.optfloate_J0410[0.001/0.1] Uncertainty in J0410magstat.errorfloatJ0430[12.58/17.65] Narrow G band J0430 magnitudemagphot.mag;em.optfloate_J0430[0.001/0.11] Uncertainty in J0430magstat.errorfloatgmag[12.35/17.34] SDSS g band AB magnitudemagphot.mag;em.opt.Bfloate_gmag[0/0.02] Uncertainty in gmagmagstat.error;phot.magfloatJ0515[12.1/17.2] Narrow Mg b triplet band J0515 magnitudemagphot.mag;em.optfloate_J0515[0.001/0.06] Uncertainty in J0515magstat.errorfloatrmag[11.67/16.88] SDSS r band AB magnitudemagphot.mag;em.opt.Rfloate_zmag[0/0.02] Uncertainty in zmagmagstat.error;phot.magfloatTeff[4251/6744] Effective temperatureKphys.temperature.effectiveintlog(g)[0.57/4.77] log surface gravitylog(cm.s**-2)phys.gravityfloat[Fe/H][-4.3/0.2] Metallicitylog(Sun)phys.abund.Zfloat[C/Fe][-1.07/1.84]? log C/Fe number abundancelog(Sun)meta.idfloatnullabledel[C/Fe][0/0.8]? Placco+ 2014, J/ApJ/797/21 carbon correctionarith.factorfloatnullable[C/Fe]c[-0.86/1.88]? Corrected log C/Fe number abundancelog(Sun)phys.abundfloatnullableA(C)c[4.81/8.78]? Corrected absolute carbon abundancephys.abundfloatnullable[a/Fe][-0.17/1.2]? log {alpha}/Fe number abundancelog(Sun)phys.abundfloatnullable