Comparison of our target stars (red circles) to the nearby field stars from APOGEE (gray squares) on the [Fe/H] - RV_helio plane. The upper and right panels show histograms of RV_helio and [Fe/H], respectively. While our target stars fall into the same bin in the histogram of RV_helio, they can be divided into two metallicity groups in the histogram of [Fe/H]. The mean error is plotted in the upper left corner, although it is comparable to the marker size. The yellow diamonds represent APOGEE sample stars located within 10′ from the center of Gran 5. However, none of these stars appears to be a member of Gran 5 based on their position in this plane.