Granulation Signatures in the Spectrum of the Very Metal-poor Red Giant HD 122563
A very high resolution (R = λ/Δλ = 200, 000), high signal-to-noise ratio (S/N ~= 340) blue-green spectrum of the very metal-poor ([Fe/H] ~= -2.6) red giant star HD 122563 has been obtained by us at McDonald Observatory. We measure the asymmetries and core wavelengths of a set of unblended Fe I lines covering a wide range of line strength. Line
Ramírez, I. et al.
Fecha de publicación:
12
2010