LOSVD peak locations for the second shell at the radius of 120 kpc (parameters of the shell are highlighted in bold in Table 1) according to the approximative maximal LOS velocities (Sect. 5, point 3) given by Eq. (17) (orange curves); the approximative LOSVD (Sect. 5, point 2) given by Eq. (15) (purple curves); and the model of radial oscillations (Sect. 2.3) (light blue curves almost merged with the purple ones). The red line shows the position of the LOSVD from Fig. 8, the black one shows the position of the current turning points. For parameters of the host galaxy potential, see Sect. 6.1.