Spectrum of BD+46 3474 in the region between 4300 and 4730 Å. In contrast to the broad hydrogen Balmer and He i lines (H_γ and He iλλ 4387, 4471 and 4713 in the plotted spectral window), metal lines appear to be very narrow because of the low v sin i of the star. Only the [Si iii]-iv, [O ii], and [N ii] lines present in the plotted region and used for the spectroscopic abundance analyis are indicated in the figure (see text and Table 4).