|
|
|
|
|
|
|
|
|
Galaxy
color-color diagrams,
|
|
|
don’t
match single stars (cf.
|
|
|
SSP
models in the homework).
|
|
|
Fairly
tight relationships seen.
|
|
|
Can
model these populations
|
|
|
with
single bursts and with
|
|
more
complex continuing star
|
|
|
formation.
|
|
|
Analytic
discussion in text, also
|
|
touches
on SSP models.
|
|