Jeans Newtonian and MOND modeling of the projected velocity dispersion of NGC 1400. The thick lines are for isotropic cases and the thin lines are for fits based on β_lit. Upper panel: for the Newtonian approach, there are two regions where the fitting was performed: inner region (interior to ~ 3 − 4R_e) and outer region (beyond ~ 3R_e). The thick solid blue line is for M/L_B = 6.6 (inner region) and the thick dashed red line is for M/L_B = 12.1 (outer region). The thin solid blue line is for M/L_B = 8.0 (inner region) and the thin red dashed line M/L_B = 16.8 (outer region). The NFW models with M_∗/L_B = 5.5(6.5), r_s = 400 arcsec, and ρ_s = 0.0025(0.0035) M_⊙ pc^-3 are plotted with the thick (thin) dotted magenta line. Lower panel: isotropic MOND models of the projected velocity dispersion of NGC 1400 for three interpolation functions μ(r). The standard MOND model is presented with the thick (thin) solid blue lines for M/L_B = 5.8(7.6); the simple MOND model is presented with the thick (thin) dotted red lines for M/L_B = 4.8(6.3), and the toy MOND model is presented with the thick (thin) dashed red lines for M/L_B = 3.7(5.0). The green dot-dashed lines are for the simple MOND model with the external field (see text for details). In both panels, one effective radius is indicated by a vertical dotted line.