J/ApJ/927/13ivo://CDS.VizieR/J/ApJ/927/13CDSZepeda J.Rasmussen K.C.Beers T.C.Placco V.M.Huang Y.Depagne E.2023-12-22T09:15:32Z2023-12-22T09:55:19ZCDS support team

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

cds-question@unistra.frradial-velocitychemical-abundanceseffective-temperaturechemically-peculiar-starsvisible-astronomyspectroscopyWe present results from high-resolution (R~40000) spectroscopic observations of over 200 metal-poor stars, mostly selected from the RAVE survey, using the Southern African Large Telescope. We were able to derive stellar parameters for a total of 108 stars; an additional sample of 50 stars from this same effort was previously reported on by Rasmussen+ 2020ApJ...905...20R (Cat. J/ApJ/905/20). Among our newly reported observations, we identify 84 very metal-poor (VMP; [Fe/H]{<}-2.0, 53 newly identified) stars and three extremely metal-poor (EMP; [Fe/H]{<}-3.0, one newly identified) stars. The elemental abundances were measured for carbon, as well as several other {alpha}-elements (Mg, Ca, Sc, and Ti), iron-peak elements (Mn, Co, Ni, and Zn), and neutron-capture elements (Sr, Ba, and Eu). Based on these measurements, the stars are classified by their carbon and neutron-capture abundances into carbon-enhanced metal-poor (CEMP; [C/Fe]{>}+0.70), CEMP subclasses, and by the level of their r-process abundances. A total of 17 are classified as CEMP stars. There are 11 CEMP-r stars (eight newly identified), one CEMP-s star (newly identified), two possible CEMP-i stars (one newly identified), and three CEMP-no stars (all newly identified) in this work. We found 11 stars (eight newly identified) that are strongly enhanced in r-process elements (r-II; [Eu/Fe]{>}+0.70), 38 stars (31 newly identified) that are moderately enhanced in r-process elements (r-I; +0.30<[Eu/Fe]<=+0.70), and one newly identified limited-r star.2022ApJ...927...13Zhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/927/13CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toIII/279 : RAVE 5th data release (Kunder+, 2017)III/283 : RAVE 6th data release (Steinmetz+, 2020)J/AJ/103/1987 : Stars of very low metal abundance (Beers+ 1992)J/AJ/130/2804 : Carbon abundances in metal-poor stars (Rossi+, 2005)J/ApJ/655/492 : Equivalent widths of 26 metal-poor stars (Aoki+, 2007)J/AJ/141/175 : Abundances in M15 RGB/RHB stars (Sobeck+, 2011)J/MNRAS/412/843 : SAGA extremely metal-poor stars (Suda+, 2011)J/ApJ/769/57 : Equivalent widths of metal-poor stars (Frebel+, 2013)J/ApJ/794/58 : Metal-poor stars in the thick disk of the Gal. (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/ApJS/211/5 : Line data for the Swan system ^12^C^13^C (Ram+, 2014)J/ApJS/214/26 : Line lists for CN isotopes transitions (Sneden+, 2014)J/ApJ/807/171 : SkyMapper Survey metal-poor star spectrosc. (Jacobson+, 2015)J/AJ/151/82 : 4 brightest red giants in UFD galaxy Ret 2 (Roederer+, 2016)J/ApJ/833/20 : Carbon-enhanced metal-poor (CEMP) star abund. (Yoon+, 2016)J/ApJ/835/81 : Bright metal-poor stars from HES Survey. II. (Beers+, 2017)J/ApJ/838/44 : Abundances of the brightest member of Tuc III (Hansen+, 2017)J/ApJ/858/92 : RPA Southern Pilot Search of 107 Stars (Hansen+, 2018)J/AJ/155/256 : Sp. validation of RAVE metal-poor stars (Placco+, 2018)J/AJ/156/179 : r-process-enhanced field stars kinematics (Roederer+, 2018)J/ApJ/868/110 : R-Process Alliance: 1st release in Gal. halo (Sakari+, 2018)J/ApJ/870/83 : Abund. in the ultra-faint dwarf gal. GruI & TriII (Ji+, 2019)J/ApJ/882/177 : Abundances of 4 member stars of Tucana III (Marshall+, 2019)J/ApJS/249/30 : R-Process Alliance: metal-poor star sp. (Holmbeck+, 2020)J/ApJ/905/20 : Metal-poor stars observed with SALT/HRS (Rasmussen+, 2020)J/A+A/649/A49 : Spectroscopic study of CEMP-(s & r/s) stars (Goswami+, 2021)J/ApJ/908/79 : The r-process Alliance; abund. in 519 stars (Gudin+, 2021)J/AJ/162/229 : 13 Magellanic Clouds metal-poor stars (Reggiani+, 2021)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/927/13https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/927/13http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/927/13https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/927/13https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/927/13http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/927/13GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/927/13/mpstars (Position, date of observation, and radial velocity (Table 2), signal-to-noise and stellar parameters (Table 3), abundances of alpha elements (Table 5) and iron-peak elements (Table 6) and classifications (Table 7))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/927/13/mpstars?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/927/13/mpstars?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/927/13/mpstars?GETtext/xml+votable180.050000true1.1583-54.02610.0055555555555555566/16813 17027 17032 17420 18439 18683 21126 24588 24657 25044 25197 25431 25479 25486 25595 26558 30858 30970 31119 31312 33014 33030 33195 33200 33415 33493 33875 33963 34179 34192 34278 34924 34935 34986 35032 35112 35760 36169 36501 36521 37508 38809 39084 39208 39451 39810 40257 40306 41247 42263 43070 43210 43265 43493 43503 43593 43646 43718 43851 43864 43975 44445 44500 44505 44793 45309 45343 45408 45456 45499 45743 45768 45799 45838 45952 45968 46023 46054 46273 46394 46666 46706 46770 47169 47206 47305 47351 47364 47459 47532 47544 47598 47634 47687 47695 47776 48162 48603 48647 48661 48674 48762 48851 48916 48946 49027 49081https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/927/13?format=asciiOpticaldefaultJ/ApJ/927/13/mpstarsPosition, date of observation, and radial velocity (Table 2), signal-to-noise and stellar parameters (Table 3), abundances of alpha elements (Table 5) and iron-peak elements (Table 6) and classifications (Table 7)SimbadSimbad column added by the CDSmeta.ref.urlcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRAJ2000Right Ascension (J2000)degpos.eq.ra;meta.mainDEJ2000[-75.3/13.1] Declination (J2000)degpos.eq.dec;meta.mainObs[2017/2019] Year of the observationtime.epochRVel[-320.7/452] Radial velocitykm/sphys.veloc;pos.heliocentricfloate_RVel[0/12.4] Uncertainty in RVelkm/sstat.error;spect.dopplerVelocfloatSNR[21/150] Signal-to-Noise ratio at 5033{AA}stat.snrintTeff[4420/6281] Effective temperatureKphys.temperature.effectiveinte_Teff[150] Uncertainty in TeffKstat.error;phys.temperature.effectiveintlog(g)[0.6/4.3] log surface gravitylog(cm.s**-2)phys.gravityfloate_log(g)[0.3] Uncertainty in log(g)log(cm.s**-2)stat.errorfloatxi[0.9/4] Microturbulent velocitykm/sphys.velocfloate_xi[0.2] Uncertainty in xikm/sstat.errorfloat[Fe/H][-3.24/-0.76] Metallicitylog(Sun)phys.abund.Zfloate_[Fe/H][0.06/0.3] Uncertainty in [Fe/H]log(Sun)stat.error;phys.abund.Fefloat[Mg/Fe][-0.34/0.78] Log magnesium-to-iron ratiolog(Sun)phys.abundfloate_[Mg/Fe][0.1/0.8] Uncertainty in [Mg/Fe]log(Sun)stat.error;phys.abundfloato_[Mg/Fe][1/8] Number of lines used to determine [Mg/Fe]meta.numberint[Si/Fe][0.06/1.7]? log silicon-to-iron ratiolog(Sun)phys.abundfloatnullablee_[Si/Fe][0.2]? Uncertainty in [Si/Fe]log(Sun)stat.error;phys.abundfloatnullableo_[Si/Fe][1]? Number of lines used to determine [Si/Fe]meta.numberintnullable[Ca/Fe][-0.42/0.91] Log calcium-to-iron ratiolog(Sun)phys.abundfloate_[Ca/Fe][0.1/0.6] Uncertainty in [Ca/Fe]log(Sun)stat.error;phys.abundfloato_[Ca/Fe][1/11] Number of lines used to determine [Ca/Fe]meta.numberint[Sc/Fe][-0.25/0.63] Log scandium-to-iron ratiolog(Sun)phys.abundfloate_[Sc/Fe][0.1/0.6] Uncertainty in [Sc/Fe]log(Sun)stat.error;phys.abundfloato_[Sc/Fe][1/9] Number of lines used to determine [Sc/Fe]meta.numberint[Ti/Fe][0.1/0.9] Log titanium-to-iron ratiolog(Sun)phys.abundfloate_[Ti/Fe][0.09/0.3] Uncertainty in [Ti/Fe]log(Sun)stat.error;phys.abundfloato_[Ti/Fe][19/84] Number of lines used to determine [Ti/Fe]meta.numberintlog(Mg)[4.9/7] log magnesium number abundancephys.abundfloatlog(Si)[5.16/7.02]? log silicon number abundancephys.abundfloatnullablelog(Ca)[3.48/5.91] log calcium number abundancephys.abundfloatlog(Sc)[0.02/3.02] log scandium number abundancephys.abundfloatlog(Ti)[2/5] log titanium number abundancephys.abundfloat[Cr/Fe][-0.5/0.23]? Log chromium-to-iron ratiolog(Sun)phys.abundfloatnullablee_[Cr/Fe][0.06/0.34]? Uncertainty in [Cr/Fe]log(Sun)stat.error;phys.abundfloatnullableo_[Cr/Fe][4/25]? Number of lines used to determine [Cr/Fe]meta.numberintnullable[Mn/Fe][-0.84/0.34]? log manganese-to-iron ratiolog(Sun)phys.abundfloatnullablee_[Mn/Fe][0.1/0.71]? Uncertainty in [Mn/Fe]log(Sun)stat.error;phys.abundfloatnullableo_[Mn/Fe][1/7]? Number of lines used to determine [Mn/Fe]meta.numberintnullable[Co/Fe][-0.73/1.1]? Log cobalt-to-iron ratiolog(Sun)phys.abundfloatnullablee_[Co/Fe][0.1/0.6]? Uncertainty in [Co/Fe]log(Sun)stat.error;phys.abundfloatnullableo_[Co/Fe][1/5]? Number of lines used to determine [Co/Fe]meta.numberintnullableo_[Fe/H][36/152] Number of lines used to determine [Fe/H]meta.numberint[Ni/Fe][-0.13/0.24] Log nickel-to-iron ratiolog(Sun)phys.abundfloate_[Ni/Fe][0.1/0.62] Uncertainty in [Ni/Fe]log(Sun)stat.error;phys.abundfloato_[Ni/Fe][1/17] Number of lines used to determine [Ni/Fe]meta.numberint[Zn/Fe][-0.07/0.62]? Log zinc-to-iron ratiolog(Sun)phys.abundfloatnullablee_[Zn/Fe][0.1/1]? Uncertainty in [Zn/Fe]log(Sun)stat.error;phys.abundfloatnullableo_[Zn/Fe][0/2]? Number of lines used to determine [Zn/Fe]meta.numberintnullablelog(Cr)[2/5.11]? log chromium number abundancephys.abundfloatnullablelog(Mn)[1.69/4.82]? log manganese number abundancephys.abundfloatnullablelog(Co)[2/5]? log cobalt number abundancephys.abundfloatnullablelog(Fe)[3.7/6.74] log iron number abundancephys.abundfloatlog(Ni)[2/5.63] log nickel number abundancephys.abundfloatlog(Zn)[0/4.11]? log zinc number abundancephys.abundfloatnullableClassClassificationsrc.classchar[C/Fe][-1.15/1.16] Log carbon-to-iron ratiolog(Sun)phys.abundfloate_[C/Fe][0.3/0.3] Uncertainty in [C/Fe]log(Sun)stat.error;phys.abundfloato_[C/Fe][1] Number of lines used to determine [C/Fe]meta.numberint[C/Fe]c[-1.15/1.17]? Log corrected carbon-to-iron ratio (1)log(Sun)phys.abundfloatnullablee_[C/Fe]c[0.3]? Uncertainty in [C/Fe]c(1)log(Sun)stat.error;phys.abundfloatnullableACc[5.5/7.7]? Corrected carbon number abundance (1)phys.abundfloatnullable[Sr/Fe][-1.02/0.68]? Log strontium-to-iron ratiolog(Sun)phys.abundfloatnullablee_[Sr/Fe][0.1/0.6]? Uncertainty in [Sr/Fe]log(Sun)stat.error;phys.abundfloatnullableo_[Sr/Fe][0/2]? Number of lines used to determine [Sr/Fe]meta.numberintnullable[Ba/Fe][-1.32/1.55] Log barium-to-iron ratiolog(Sun)phys.abundfloate_[Ba/Fe][0.2] Uncertainty in [Ba/Fe]log(Sun)stat.error;phys.abundfloato_[Ba/Fe][1/2] Number of lines used to determine [Ba/Fe]meta.numberint[Eu/Fe][-0.21/1.7]? Log europium-to-iron ratiolog(Sun)phys.abundfloatnullablee_[Eu/Fe][0.2]? Uncertainty in [Eu/Fe]log(Sun)stat.error;phys.abundfloatnullableo_[Eu/Fe][1/3]? Number of lines used to determine [Eu/Fe]meta.numberintnullable[Ba/Eu][-1.9/0.81]? Log barium-to-europium ratiolog(Sun)phys.abundfloatnullablee_[Ba/Eu][0.28]? Uncertainty in [Ba/Eu]log(Sun)stat.errorfloatnullablelog(Sr)[-0.71/2.25]? log strontium number abundancephys.abundfloatnullablelog(Ba)[-2.15/1.71] log barium number abundancephys.abundfloatlog(Eu)[-2.26/0.15]? log europium number abundancephys.abundfloatnullablePapIDisplay data from Paper I (Rasmussen+ 2020, J/ApJ/905/20) within 3"meta.ref.urlintnullableNameIdentifiermeta.id;meta.maincharONameOther namemeta.idcharJ/ApJ/927/13/table4Line list for equivalent-width analysisIonIon identifierphys.atmol.ionStagecharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintlambda[3908.7/5573.1] Wavelength; Angstroms0.1nmem.wldoublechi[0/4.6] Excitation potentialeVphys.atmol.excitationfloatlog(gf)[-5.7/0.56] log oscillator strengthphys.atmol.oscStrengthfloat