Blue Loops, Cepheids, and Forays into Axions
Blue Loops, Cepheids, and Forays into Axions
The blue loop stage of intermediate mass stars has been called a "magnifying glass", where even seemingly small effects in prior stages of evolution, as well as assumptions about stellar composition, rotation, and convection, produce discernible changes. As such, blue loops, and especially the existence and properties of Cepheids, can …