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Keck HIRES spectroscopy of SkyMapper commissioning survey candidate extremely metal-poor stars

Marino, Anna Fabiola; Da Costa, Gary; Casey, Andrew; Asplund, Martin; Bessell, Michael; Frebel, Anna; Keller, Stefan; Lind, K.; Mackey, Dougal; Murphy, Simon; Nordlander, Thomas; Norris, John; Schmidt, Brian; Yong, David


We present results from the analysis of high-resolution spectra obtained with the Keck HIRES spectrograph for a sample of 17 candidate extremely metal-poor (EMP) stars originally selected from commissioning data obtained with the SkyMapper telescope. Fourteen of the stars have not been observed previously at high dispersion. Three have [Fe/H] ≤ −3.0, while the remainder, with two more metal-rich exceptions, have −3.0 ≤ [Fe/H] ≤ −2.0 dex. Apart from Fe, we also derive abundances for the elements...[Show more]

CollectionsANU Research Publications
Date published: 2019
Type: Journal article
Source: Monthly Notices of the Royal Astronomical Society
DOI: 10.1093/mnras/stz645
Access Rights: Open Access


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