For clarity, I'm not asking about the super-behemoths that are quasi-stars. I'm interested in knowing how large a regular star could theoretically get once it reached supergiant/hypergiant phase, according to our current best models.

  • $\begingroup$ en.wikipedia.org/wiki/List_of_largest_stars ? $\endgroup$ Sep 3, 2021 at 16:08
  • $\begingroup$ Are you interested in only high mass stars?... i.e., stars with ZAMS mass $\gtrsim 30$ M$_{\odot}$? $\endgroup$ Sep 4, 2021 at 13:12
  • $\begingroup$ @DaddyKropotkin Not necessarily. Are there medium-mass stars that can get bigger than high-mass stars? $\endgroup$
    – zucculent
    Oct 27, 2021 at 21:31
  • $\begingroup$ Bigger in terms of radius? Yes, since the stellar radius also depends on the metallicity and the stage of nuclear evolution that the star is on. $\endgroup$ Oct 28, 2021 at 9:57


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