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Fig. 3

image

Spectra of wavelength regions covering a few of the lines used for the abundance determination. Other features not marked are mostly due to CN. The top spectrum is from the Arcturus atlas (Hinkle et al. 1995), the middle one is of the thick disk star HD 787, and the bottom spectrum is of the Galactic centre star GC44. The flat regions of the HD 787 spectrum at 2.0955 and 2.0963 μm are due to the elimination of cosmic hits.

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