Measuring nickel masses in Type Ia supernovae using cobalt emission in nebular phase spectra

Michael J. Childress, D. John Hillier, Ivo Seitenzahl +34

The light curves of Type Ia supernovae (SNe Ia) are powered by the radioactive decay of ${}^{56}$Ni to ${}^{56}$Co at early times, and the decay of ${}^{56}$Co to ${}^{56}$Fe from ~60 days…