 |
 |
 |
 |
 |
 |
 |
 |
 |
 |
 |
 |
 |
• |
Merritt
(1987) analysis:
|
|
|
|
– |
Assuming
constant M/L ratio, then mass is 1.79
|
|
|
x
1015h-1 solar masses, and
M/L is 350 h-1 in
|
|
|
solar
units (think about that!).
|
|
|
|
– |
Typical
M/L for ellipticals is 15 in solar units.
|
|
|
|
– |
Differ
by a factor of 20
|
|
|
• |
Why
should the dark matter have the same
|
|
|
distribution
as the light?
|
|
|
• |
Why
should the velocities even be isotropic?
|