[Michlib-l] Suggestions for Physics database?

I have a student who is looking for a physics database where she can find the stellar mass and luminosity for at least 30 stars. She found some random dudes free website that sort of has the data. But it does not seem like the most academic site. There has to be a science foundation or a university that has this sort of database. Anyone have any insight? Links? :) Thanks- Klaudia -- *International Academy* www.iatoday.org <http://www.iatoday.org>