M 101_XM 101_Z–projection (top) and M 101_XM 101_Y–projection (bottom) of known members and candidate members of the M 101 group complex in the M 101 reference system. The top panels essentially give an edge-on view of the complex, the bottom panels a face-on view. Red dots correspond to the three major galaxies M 101, M 51, and M 63; black dots indicate dwarf galaxies with distances. The thick red dotted line is the best-fitting (reference) plane lying in the M 101_XM 101_Y–plane. The left panels show the known members with 5% distance errors indicated by the short lines along the LoS. The right panels additionally give the possible positions of our new dwarf candidates and the candidates from the LV Catalog, in absence of distance measurements shown as long thin black lines again running along their LoS.