Chemical Abundance Signature of J0023+0307: A Second-generation Main-sequence Star with [Fe/H]

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. The star was originally found to have [Fe/H] <-6.6 based on a Ca ii K measurement in an R ∼ 2500 spectrum. No...

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Bibliographic Details
Main Authors: Frebel, Anna L., Ezzeddine, Rana, Chiti, Anirudh
Other Authors: Massachusetts Institute of Technology. Department of Physics
Format: Article
Language:English
Published: American Astronomical Society 2020
Online Access:https://hdl.handle.net/1721.1/128722