J/AJ/166/128ivo://CDS.VizieR/J/AJ/166/128doi:10.26093/cds/vizier.51660128CDSReggiani H.Schlaufman K.C.Casey A.R.2024-11-06T20:17:39Z2024-04-09T06:03:42ZCDS support team

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

cds-question@unistra.frchemically-peculiar-starspeculiar-variable-starsnovaevisible-astronomymetallicityThe progenitor systems and explosion mechanisms responsible for the thermonuclear events observationally classified as Type Ia supernovae are uncertain and difficult to uniquely constrain using traditional observations of Type Ia supernova host galaxies, progenitors, light curves, and remnants. For the subset of thermonuclear events that are prolific producers of iron, we use published theoretical nucleosynthetic yields to identify a set of elemental abundance ratios infrequently observed in metal-poor stars but shared across a range of progenitor systems and explosion mechanisms: [Na,Mg,Co/Fe]<0. We label stars with this abundance signature "iron-rich metal-poor," or IRMP stars. We suggest that IRMP stars formed in environments dominated by thermonuclear nucleosynthesis and consequently that their elemental abundances can be used to constrain both the progenitor systems and explosion mechanisms responsible for thermonuclear explosions. We identify three IRMP stars in the literature and homogeneously infer their elemental abundances. We find that the elemental abundances of BD+80-245, HE0533-5340, and SMSSJ034249.53-284216.0 are best explained by the (double) detonations of sub-Chandrasekhar-mass CO white dwarfs. If our interpretation of IRMP stars is accurate, then they should be very rare in globular clusters and more common in the Magellanic Clouds and dwarf spheroidal galaxies than in the Milky Way's halo. We propose that future studies of IRMP stars will quantify the relative occurrences of different thermonuclear event progenitor systems and explosion mechanisms.2023AJ....166..128Rhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/166/128CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toB/simbad : Simbad objects catalogue (M.Wenger 2000)I/337 : Gaia DR1 (Gaia Collaboration, 2016)II/335 : Revised catalog GALEX UV sources (GUVcat_AIS GR6+7) (Bianchi+ 2017)I/345 : Gaia DR2 (Gaia Collaboration, 2018)I/350 : Gaia EDR3 (Gaia Collaboration, 2020)VII/233 : The 2MASS Extended sources (IPAC/UMass, 2003-2006)J/AJ/120/1841 : Abundances & Kinematics of Halo & Disk Stars (Fulbright 2000)J/A+A/416/1117 : Abundances in the early Galaxy (Cayrel+, 2004)J/ApJS/182/80 : Rare earth abundances (Sneden+, 2009)J/A+A/523/A17 : Individual stars in Fornax dSph center (Letarte+, 2010)J/A+A/511/L10 : Abundances and space velocities of 94 stars (Nissen+, 2010)J/ApJ/743/156 : NEOWISE obs of NEOs; preliminary results (Mainzer+, 2011)J/MNRAS/412/843 : SAGA extremely metal-poor stars (Suda+, 2011)J/ApJ/778/56 : Hamburg/ESO Survey extremely metal-poor stars (Cohen+, 2013)J/ApJ/769/57 : Equivalent widths of metal-poor stars (Frebel+, 2013)J/AJ/145/107 : Zr, Ba, La, & Eu abund in 19 open clusters (Jacobson+, 2013)J/ApJ/767/134 : Abundances of red giant stars in UFD galaxies (Vargas+, 2013)J/A+A/564/A125 : AGN Torus model comparison of AGN in CDFS (Buchner+, 2014)J/AJ/147/136 : Stars of very low metal abundance VI. Abund (Roederer+, 2014)J/ApJ/789/147 : Star formation histories of LG dwarf galaxies (Weisz+, 2014)J/ApJ/807/171 : SkyMapper Survey metal-poor star spectro (Jacobson+, 2015)J/ApJ/833/225 : -2.6<=[Fe/H]<=0.2 F & G dwarfs. II. Abundances (Zhao+, 2016)J/A+A/608/A46 : Constraining cosmic scatter (Reggiani+, 2017)J/A+A/626/A15 : Sculptor Red Giant Branch stars abundances (Hill+, 2019)J/A+A/631/A171 : Neutron-capture elements dwarf galaxies (Skuladottir+, 2019)J/ApJ/891/85 : Manganese abundances GC & dSph galaxies (de los Reyes+, 2020)J/ApJ/889/27 : Abundances of 11 stars in Carina II and III (Ji+, 2020)J/AJ/160/173 : Abundances metal-poor stars in Inner Bulge (Reggiani+, 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/AJ/163/252 : Abundances for 15 extreme-velocity stars (Reggiani+, 2022)J/AJ/163/159 : Species abundances in WASP-77A (Reggiani+, 2022)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/166/128https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/166/128http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/166/128https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/166/128https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/166/128http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/166/128GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/AJ/166/128/table1 (Observations log)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/166/128/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/166/128/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/166/128/table1?GETtext/xml+votable180.050000true122.77679.90821110.0055555555555555566/8093 33883 36098https://cdsarc.cds.unistra.fr/viz-bin/moc/J/AJ/166/128?format=asciiOpticaldefaultJ/AJ/166/128/table1Observations logSimbadSimbad column added by the CDSmeta.ref.urlcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIDStellar identifiermeta.id;meta.maincharprimaryRAJ2000[3/8] Hour of right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Degree of declination (J2000)pos.eq.dec;meta.mainObs[2003/2013] UT year of observationtime.epoch;obsInstTelescope/Instrument usedinstr.setupcharTexp[2000/9800] Exposure timestime.duration;obs.exposureintS/N4500[45/70] Signal-to-noise ratio at 4500{AA}stat.snrintS/N6500[100/115] Signal-to-nois-ratio at 6500{AA}stat.snrintNobsNumber of observationsmeta.numberintnullablespectrumInteractive Plotmeta.ref.urlcharJ/AJ/166/128/table3Atomic Data, equivalent-width and individual-line abundance inferencesIDStellar identifiermeta.id;meta.maincharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintWave[3729/7789] Wavelength; Angstroms0.1nmem.wldoubleSpeciesSpecies identifiermeta.idcharExPot[0/4.35] Excitation potentialeVphys.atmol.excitationfloatloggf[-5.63/0.54] log oscillator strengthphys.atmol.oscStrengthfloatEW[3.95/161] Equivalent width; milli-Angstroms1e-13mspect.line.eqWidthfloatlogE(X)[-1.27/6.03] log number abundance of Speciesphys.abundfloat