Observed r-process abundances vs. Fe abundances for the Draco dSph. The [Ba/H] data for [Fe/H] < −1.8 and the [Eu/H] data for [Fe/H] >−1.8 are taken from Tsujimoto et al. (2015, 2017), respectively. The Ba abundances for these low-metallicity stars can be regarded as an r-process Ba abundance based on the pure r-process Ba/Eu ratios measured for several stars. The Eu abundances are shifted by −0.64 dex, which corresponds to the value of the solar r-process Ba/Eu ratio, and are thereby equivalent to the r-process Ba abundances for stars with [Fe/H] > −1.8.