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The SkyMapper DR1.1 Search for Extremely Metal-Poor Stars
G. S. Da Costa, M. S. Bessell, A. D. Mackey +10
We present and discuss the results of a search for extremely metal-poor stars based on photometry from data release DR1.1 of the SkyMapper imaging survey of the southern sky. In pa…
The Most Metal-Poor Stars. V. The CEMP-no Stars in 3D and Non-LTE
John E. Norris, David Yong
We explore the nature of carbon-rich ([C/Fe]_{1D,LTE} > +0.7), metal-poor ([Fe/H_{1D,LTE}] < -2.0) stars in the light of post 1D,LTE literature analyses, which provide 3D-1D and NL…
The lowest detected stellar Fe abundance: The halo star SMSS J160540.18-144323.1
T. Nordlander, M. S. Bessell, G. S. Da Costa +12
We report the discovery of SMSS J160540.18-144323.1, a new ultra-metal poor halo star discovered with the SkyMapper telescope. We measure [Fe/H] = -6.2 +- 0.2 (1D LTE), the lowest…
Keck HIRES Spectroscopy of SkyMapper Commissioning Survey Candidate Extremely Metal-Poor Stars
A. F. Marino, G. S. Da Costa, A. R. Casey +11
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 s…