IGRINS-2 spectra detect the first H-band atomic carbon line in an ultra metal-poor star, with C, Mg, Si, and Ca abundances matching earlier optical and ultraviolet estimates.
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Near-Infrared Observations of BD+44 493 with IGRINS-2
IGRINS-2 spectra detect the first H-band atomic carbon line in an ultra metal-poor star, with C, Mg, Si, and Ca abundances matching earlier optical and ultraviolet estimates.