re: Evidence that the Sun was Born in a Cluster
[as the result of a ... never mind]
I just downloaded the paper, will read it tomorrow. Meanwhile, I wonder:
[a] If the proper motions of nearby stars, correlated to apparent ages (and other clues, like metal enrichment) can be extrapolated backwards to a common region of origin... in other words, if the "cluster birth" conjecture is true, can we deduce the identity of the Sun's litter-mates?
[b] If the supernova was a mere 1 to 2 parsecs away, is any part of its remnant visible... or are some of the remnants we already know about the afterbirth of our own star?