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The Frequency of Carbon Stars Among Extremely Metal-Poor Stars
Judith G. Cohen, Stephen Shectman, Ian Thompson +6
We demonstrate that there are systematic scale errors in the [Fe/H] values determined by the Hamburg/ESO Survey (and by inference by the HK Survey in the past) for certain extremel…
The Temperature Scale of Metal-Poor Dwarfs: Lithium and Oxygen Abundances
Jorge Melendez, Nataliya G. Shchukina, Ivan Ramirez +1
We employ a new Infrared Flux Method (IRFM) temperature scale (Ramirez & Melendez 2005, ApJ 626, 446; ApJ 626, 465) in order to determine Li, O, and Fe NLTE abundances in a sample…
The Frequency of Carbon Rich Stars Among Extremely Metal Poor Stars
Judith G. Cohen, Stephen Shectman, Ian Thompson +6
We demonstrate that there are systematic scale errors in the [Fe/H] values determined by the Hamburg/ESO Survey (and by the HK Survey by inference) for certain extremely metal poor…