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this post was submitted on 25 Mar 2025
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[Migrated, see pinned post] Casual Conversation
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Recent stellar evolution computations show that the blue supergiant (BSG) stars could come from two distinct populations: a first group arising from massive stars that just left the main sequence and are crossing the Hertzsprung–Russell diagram (HRD) towards the red supergiant (RSG) branch, and a second group coming from stars that have lost considerable amount of mass during the RSG stage and are crossing the HRD for a second time towards the blue region.
Wow. This goes well beyond "casual conversation" 😅
But your article is saying that it happens, and a large factor is mass being ejected, and I can understand that I suppose. Cool!
Well...
I started casual...