Alkali phenoxides in comets

M. Fulle, P. Molaro, A. Rotundi +4

Potassium was first detected in spectra of the sungrazer comet Ikeya-Seki at the heliocentric distance rh = 0.15 au and, 48 years later, in comets PanSTARRS and ISON at rh = 0.46 a…