Starship Asterisk*

dougettinger wrote:I am more concerned with 2nd and 3rd generation stars where dust particles could provide a differential for the size of particle masses.

I don't think the presence of dust changes the gravitational dynamics in any significant way.

What would you use for a starting density for hydrogen molecules in a typical IMC ?

I'd use 1e9 molecules per cubic meter. That's still a hard vacuum, of course, but I think is pretty typical for the density of IMCs. The densest parts, where star formation is observed, are about a thousand times denser than the overall average (so, 1e12 molecules per cubic meter).

Thanks for the information. I had a previous question not related to IMC's. Which came first - spiral or elliptical galaxies ? There seems to be different opinions in academia.

Doug Ettinger

dougettinger wrote:I had a previous question not related to IMC's. Which came first - spiral or elliptical galaxies ? There seems to be different opinions in academia.

Yes there does.