Figure 11. NGC 2273, Type SB(r)a, left, orginal image and fitting, ρ = 0.6, Euler angle (-43, 57, 80). Right, face-on image (right) converted form the original image and fitting, ρ= 0.6

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