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Chemical Abundance Signature of J0023+0307 -- A Second-Generation Main-Sequence Star with [Fe/H]<-6
Anna Frebel, Alexander P. Ji, Rana Ezzeddine +4
We present a chemical abundance analysis of the faint halo metal-poor main-sequence star J0023+0307, with [Fe/H]<-6.3, based on a high-resolution (R~35,000) Magellan/MIKE spectrum.…
Detection of a population of carbon-enhanced metal-poor stars in the Sculptor dwarf spheroidal galaxy
Anirudh Chiti, Joshua D. Simon, Anna Frebel +6
The study of the chemical abundances of metal-poor stars in dwarf galaxies provides a venue to constrain paradigms of chemical enrichment and galaxy formation. Here we present meta…
Chemical Abundances of new member stars in the Tucana II dwarf galaxy
Anirudh Chiti, Anna Frebel, Alexander P. Ji +3
We present chemical abundance measurements for seven stars with metallicities ranging from [Fe/H] = 3.3 to [Fe/H] = 2.4 in the Tucana II ultra-faint dwarf galaxy (UFD), based…