Density law | Constants |
![]() |
|
(kpc) | (
![]() |
||
Bulge |
![]() |
r0=0.5 |
![]() |
Thin disc |
![]() |
hR=2.5 |
![]() |
hz=0.352 | |||
Thick disc |
![]() |
hR = 2.5 |
![]() |
h'z=1.158 | |||
Halo |
![]() |
a0 = 2.7 | 0.108 |
Notes. r
is the
spherical radius from the center of the Galaxy and r0
is bulge
scale length; R and z are the
natural cylindrical coordinates of
the axisymmetric disc, hR
is the scale length of the disc,
hz is
the scale height of the thin disc, h'z
is the scale
height of the thick disc; a is the radius of the
halo and a0is a constant;
is the central mass density.
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