J/ApJ/824/L19ivo://CDS.VizieR/J/ApJ/824/L19doi:10.26093/cds/vizier.18249019CDSRoederer I.U.Placco V.M.Beers T.C.2017-01-23T22:00:00Z2016-09-30T12:39:04ZCDS support team

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

cds-question@unistra.frchemically-peculiar-starschemical-abundancesline-intensitiesspectroscopyultraviolet-astronomyThe carbon-enhanced metal-poor star BD+44{deg}493 ([Fe/H]=-3.9) has been proposed as a candidate second-generation star enriched by metals from a single Pop III star. We report the first detections of P and S and the second detection of Zn in any extremely metal-poor carbon-enhanced star, using new spectra of BD+44493 collected by the Cosmic Origins Spectrograph on the Hubble Space Telescope. We derive [P/Fe]=-0.34+/-0.21, [S/Fe]=+0.07+/-0.41, and [Zn/Fe]=-0.10+/-0.24. We increase by 10-fold the number of SiI lines detected in BD+44493, yielding [Si/Fe]=+0.15+/-0.22. The [S/Fe] and [Zn/Fe] ratios exclude the hypothesis that the abundance pattern in BD+44493 results from depletion of refractory elements onto dust grains. Comparison with zero-metallicity supernova (SN) models suggests that the stellar progenitor that enriched BD+44493 was massive and ejected much less than 0.07M_{sun}_ of ^56^Ni, characteristic of a faint SN.2016ApJ...824L..19Rhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/824/L19CatalogResearchIsServedByTAP VizieR generic servicerelated-toB/hst : HST Archived Exposures Catalog (STScI, 2007)J/ApJ/817/53 : Fe-group elemental abundance in HD84937 (Sneden+, 2016)J/ApJS/220/13 : Co I transition probabilities (Lawler+, 2015)J/AJ/147/136 : Stars of very low metal abundance. VI. (Roederer+, 2014)J/ApJS/211/20 : NiI transition probability measurements (Wood+, 2014)J/ApJ/773/33 : Chemical data of BD+44493 metal-poor subgiant (Ito+, 2013)J/ApJ/750/76 : r-process peaks elements in HD 160617 (Roederer+, 2012)J/MNRAS/412/843 : SAGA extremely metal-poor stars (Suda+, 2011)J/ApJ/724/341 : Nucleosynthesis of massive metal-free stars (Heger+, 2010)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/824/L19https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/824/L19http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/824/L19https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/824/L19https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/824/L19http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/824/L19GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapUVdefaultJ/ApJ/824/L19/table2Atomic data, equivalent widths, and abundances derived from individual linesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSpSpecies identifierphys.atmol.ionStagecharlambda[1807.3/2153.1] Wavelength (1)0.1nmem.wlfloatExPot[0/2.7] Excitation potentialeVphys.atmol.excitationfloatlog(gf)[-2.3/0.2] Log oscillator strengthphys.atmol.oscStrengthfloate_log(gf)[0.02/0.3] Uncertainty in log(gf)stat.errorfloatr_log(gf)Reference code for log(gf) (2)meta.ref;pos.frameintEW[17/209]? Equivalent width; milli-Angstroms1e-13mspect.line.eqWidthfloatnullablel_log(e)Limit flag on log(e)meta.code.errorcharlog(e)[-0.3/4.3] Log abundancelog(Sun)phys.abundfloate_log(e)[0.2/0.9]? Uncertainty in log(e)log(Sun)stat.errorfloatnullable