Stellar type distribution across galaxies and over time

[TheSicilianSa]

I'm quite interested in finding out the % distribution of stars (by type, viz. O,B,..,M), a) within our galaxy and b) within other galaxy types (ex. globular, etc) - and how these distributions change with time.

Can anyone sate my curiosity (or point me in the right direction) ?

 

[mgb_phys]

The distribution is normally plotted as an HR diagram http://en.wikipedia.org/wiki/Hertzsprung-Russell_diagram (although this doesn't give you the % )

 

[TheSicilianSa]

Thanks mgb_phys for you input, but that's not exactly what I was looking for.

I would like to know the particular structures of galaxies, how they evolve and how they relate to other types during their period of evolution.