Interplay between pulsation, mass loss, and third dredge-up: More about Miras with and without technetium

Stefan Uttenthaler, Iain McDonald, Klaus Bernhard +2

We follow-up on a previous finding that AGB Mira variables containing the 3DUP indicator technetium (Tc) in their atmosphere form a different sequence of K-[22] colour as a functio…