Image Details
Caption: Figure 7.
Positive (top) and negative (bottom) period-change rates predicted from evolutionary models (lines) confronted with determinations for Galactic Cepheids from D. G. Turner et al. (2006) and LMC Cepheids from N. Rodríguez-Segovia et al. (2022).
© 2026. The Author(s). Published by the American Astronomical Society.