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DSII Dwarfs
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How do we pick where the smooth component begins #11

Closed eteq closed 5 years ago

eteq commented 5 years ago

Because it's easy given the way the isochrones are stored, just saying "main sequence is smooth", "RGB is not" is easy for now. But for e.g. star-forming galaxies that's not sufficient because the brightest stars are probably BSG or RSG stars (which are MS). So we should consider how to have a slightly better definition of the "smooth" component.

Fiducial idea: define a "pixel" for a given galaxy (or an average density), work down the IMF with random samples, and when you hit a certain number (10? 100?) of stars in that one pixel, that's the cutoff. Repeat 1000x, and pick the median of that answer.

hcferguson commented 5 years ago

For now I'm picking 1 solar mass or the MS turnoff , whichever is smaller. I think this should catch the case of young stellar populations.

hcferguson commented 5 years ago

Closed by #17 implementing the simple shortcut described in my comment above. Can open a new issue if we decide to do something fancier.