X-shooter spectrum of CEN 34 (emphasized in red) in the wavelength region 8375–8770 Å. The two features apparently seen in emission in the CEN 34 spectrum at wavelengths ~8590 Å and ~8730 Å are artifacts with unnatural line widths. For comparison, the spectra of several reference stars are displayed; they are adopted from the literature as follows: F8 III (HIP 74975), G1 III (HIP 117503), and G1 II (HIP 47908) from Valdes et al. (2004); G0 Ib (HIP 96481) and G0 III (HIP 5454) from Andrillat et al. (1995); G2 Ib (HIP 109074), G2 III (HIP 86731), G5 III (HIP 100524), and G5 Ib (HIP 107348) from Carquillat et al. (1997). All reference spectra have a resolution around 1 Å, very close to that of our CEN 34 spectrum. All spectra are normalized and are displayed by applying a corresponding shift along the Y-axis for better visual comparison.