A New Type of Extremely Metal-poor Star

Cohen, Judith G; McWilliam, Andrew; Christlieb, Norbert; Shectman, Stephen; Thompson, Ian; Melendez Moreno, Jorge; Wisotzki, Lutz; Riemers, Dieter

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A New Type of Extremely Metal-poor Star

Date

2007

Authors

Cohen, Judith G

McWilliam, Andrew

Christlieb, Norbert

Shectman, Stephen

Thompson, Ian

Melendez Moreno, Jorge

Wisotzki, Lutz

Riemers, Dieter

Publisher

IOP Publishing

Abstract

We present an abundance analysis for the extremely metal-poor (EMP) star HE 1424-0241 based on high-dispersion spectra from HIRES at Keck. This star is a giant on the lower red giant branch with [Fe/H] ∼ -4.0 dex. Relative to Fe, HE 1424-0241 has normal