J/AJ/166/127ivo://CDS.VizieR/J/AJ/166/127doi:10.26093/cds/vizier.51660127CDSReeves Z.Schlaufman K.C.Reggiani H.2024-11-06T20:17:38Z2024-04-08T07:24:35ZCDS support team

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

cds-question@unistra.frmetallicitypeculiar-variable-starsvisible-astronomyIt has been suggested that a class of chemically peculiar metal-poor stars called iron-rich metal-poor (IRMP) stars formed from molecular cores with metal contents dominated by thermonuclear supernova nucleosynthesis. If this interpretation is accurate, then IRMP stars should be more common in environments where thermonuclear supernovae were important contributors to chemical evolution. Conversely, IRMP stars should be less common in environments where thermonuclear supernovae were not important contributors to chemical evolution. At constant [Fe/H]<~-1, the Milky Way's satellite classical dwarf spheroidal (dSph) galaxies and the Magellanic Clouds have lower [{alpha}/Fe] than the Milky Way field and globular cluster populations. This difference is thought to demonstrate the importance of thermonuclear supernova nucleosynthesis for the chemical evolution of the Milky Way's satellite classical dSph galaxies and the Magellanic Clouds. We use data from the Sloan Digital Sky Survey Apache Point Observatory Galactic Evolution Experiment and Gaia to infer the occurrence of IRMP stars in the Milky Way's satellite classical dSph galaxies {eta}dSph and the Magellanic Clouds {eta}Mag, as well as in the Milky Way field {eta}MWF and globular cluster populations {eta}MWGC. In order of decreasing occurrence, we find {eta}dSph=0.07_-0.02_^+0.02^, {eta}_Mag_=0.037_-0.006_^+0.007^, {eta}_MWF_=0.0013_-0.0005_^+0.0006^, and a 1{sigma} upper limit {eta}MWGC<0.00057. These occurrences support the inference that IRMP stars formed in environments dominated by thermonuclear supernova nucleosynthesis and that the time lag between the formation of the first and second stellar generations in globular clusters was longer than the thermonuclear supernova delay time.2023AJ....166..127Rhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/166/127CatalogResearchIsServedByTAP VizieR generic servicerelated-toB/simbad : Simbad objects catalogue (M.Wenger 2000)I/337 : Gaia DR1 (Gaia Collaboration, 2016)I/347 : Distances to 1.33 billion stars in Gaia DR2 (Bailer-Jones+, 2018)I/350 : Gaia EDR3 (Gaia Collaboration, 2020)III/284 : APOGEE-2 data from DR16 (Johnsson+, 2020)I/352 : Distances to 1.47 billion stars in Gaia EDR3 (Bailer-Jones+, 2021)III/286 : APOGEE-2 DR17 final allStar catalog (Abdurro'uf+, 2022)VII/233 : The 2MASS Extended sources (IPAC/UMass, 2003-2006)J/A+A/439/129 : HERES II. Spectroscopic analysis (Barklem+, 2005)J/A+A/480/379 : Abundances of 59 red giants in LMC (Pompeia+, 2008)J/A+A/505/117 : Abund red giants in 15 globular clusters (Carretta+, 2009)J/ApJ/705/328 : Abundance measurements in Sculptor dSph (Kirby+, 2009)J/ApJS/191/352 : Abund in stars of Milky Way dwarf satellites (Kirby+, 2010)J/A+A/560/A44 : Abund of LMC bar and disk stars (Van der Swaelmen+, 2013)J/ApJS/221/24 : SDSS-III APOGEE H-band spectral line lists (Shetrone+, 2015)J/AJ/151/144 : ASPCAP weights 15 APOGEE chemical elements (Garcia+, 2016)J/A+A/616/A12 : Gaia DR2 sources in GC and dSph (Gaia Collaboration+, 2018)J/ApJ/858/92 : RPA Southern Pilot Search of 107 Stars (Hansen+, 2018)J/ApJ/852/49 : Properties of metal-poor stars in APOGEE DR13 (Hayes+, 2018)J/ApJ/868/110 : R-Process Alliance 1release in Galactic halo (Sakari+, 2018)J/ApJ/898/150 : High-res. MIKE obs. of metal-poor stars (Ezzeddine+, 2020)J/A+A/649/A155 : Impact of core and shell masses on SNe Ia (Gronow+, 2021)J/A+A/656/A94 : Z-dependent yields of double detonations (Gronow+, 2021)J/AJ/162/229 : 13 Magellanic Clouds metal-poor stars (Reggiani+, 2021)J/A+A/649/A3 : Gaia Early Data Release 3 photo passbands (Riello+, 2021)J/MNRAS/505/5978 : Gaia EDR3 view Galactic globular clusters (Vasiliev+, 2021)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/166/127https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/166/127http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/166/127https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/166/127https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/166/127http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/166/127GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapOpticaldefaultJ/AJ/166/127/table1Analysis SamplerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintAPOGEEAPOGEE position-based identifiermeta.id;meta.maincharGaiaDR3Gaia DR3 identifiermeta.id.crossGaiaDR2Gaia DR2 identifiermeta.id.crossIRMPIron-rich metal-poor? True or Falsemeta.codecharEnvGalactic Environmentmeta.id.parentchar