  Axion-like particles (ALPs), a class of pseudoscalars common to many
extensions of the Standard Model, have the capacity to drain energy from the
interiors of stars. Consequently, stellar evolution can be used to derive many
constraints on ALPs. We study the influence that keV-MeV scale ALPs which
interact exclusively with photons can exert on the helium-burning shells of
asymptotic giant branch stars, the late-life evolutionary phase of stars with
initial masses less than $8M_{\odot}$. We establish the sensitivity of the
final stellar mass to such energy-loss for ALPs with masses currently permitted
by stellar evolution bounds. A semi-empirical constraint on the white dwarf
initial-final mass relation (IFMR) derived from observation of double white
dwarf binaries is then used to exclude part of a currently unconstrained region
of ALP parameter space, the cosmological triangle. The derived constraint
relaxes when the ALP decay length becomes shorter than the width of the
helium-burning shell. Other potential sources for stellar constraints on ALPs
are also discussed.
