Figure 12. NGC 1398, type: (R')SB(r)ab, ρ = 0.55*(1 + 6.8*10-72), Euler(7,48,0)

From

New Formulas and Mechanism for the Spiral Arm Formation of Galaxies

Hongjun Pan

International Journal of Physics. 2019, 7(3), 73-85 doi:10.12691/ijp-7-3-2