A Census of Massive Stars Across the Hertsprung-Russell Diagram of Nearby Galaxies: What We Know and What We Don't

Philip Massey

Lowell Observatory

When we look at a nearby galaxy, we see a mixture of foreground stars and bona fide extragalactic stars.
I will describe what we need to do to get meaningful statistics on the massive star populations across the H-R diagram.
Such a census provides the means of a very powerful test of massive star evolutionary theory.

Reference: To appear in "Hot and Coo: Bridging Gaps in Massive Star Evolution
Status: Conference proceedings

Weblink: http://www.lowell.edu/users/massey/masseyHotCool.pdf.gz

Comments: Also arXiv:0903.0155

Email: Phil.Massey@lowell.edu