Image Details
Caption: Figure 3.
Upper panel: V light curves of the novae that show a tendency to evolve from the Fe II–dominated to the He/N-dominated phase, although κ never crosses unity. Lower panel: evolution of κFeII (blue) and κHe/N (red). The gray dashed lines indicate the epochs of the available spectra.
© 2026. The Author(s). Published by the American Astronomical Society.