Radial distance from the center of Per OB1 against the mean RV for the stars with more than one spectrum, or RV for the stars with only one spectrum, excluding the SB2 binaries. The stars within 1 degree from IC 1805 were also excluded. The filled gray rectangle shows 2σ of all the RVs, excluding those from stars identified as binaries (SB1 or SB2). The filled colored circles denote stars identified as SB1. The filled colored crosses denote starts outside 2σ from the mean that are not identified as binaries. The colored stars show the remaining stars. The colored error bars present RV_PP for stars with multi-epoch data, except for SB1. The open triangles show stars that are outliers in proper motion and were therefore identified as runaways.