As we move away from the centre of, say, a spiral galaxy, is there a relation between the stellar mass and distance? I know the how the stellar abundance and density varies with the distance but does stellar mass also follow a pattern?

  • $\begingroup$ All of these are areas of active research. Incidentally, what do you mean by "stellar abundance"? If you mean how does the chemical composition of stars vary with radius, then that is quite complex and likely age dependent. $\endgroup$ – Rob Jeffries Dec 24 '19 at 8:54
  • $\begingroup$ No, I do not mean chemical composition. I was simply referring to the number density of stars when I said “stellar abundance” $\endgroup$ – Khurana Dec 24 '19 at 15:30

Are metallicities of molecular clouds lower in the outskirts of the galaxy? Seems reasonable that it would be. If the metallicity is lower would that allow for larger stars to form. Maybe there is a larger Jeans mass due to warmer clouds, the result of less efficient radiation of thermal energy? I'm just speculating here. I'm very curious to hear what more knowledgeable people have to say on the subject.

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