Estudio fotométrico de emisiones moleculares del cometa Halley en la etapa post-perihelio

Abstract

Results from photoelectric photometry in molecular bands of comet Hally carried out at Bosque Alegre are presented. The largest emissions measured are those of molecules of C₂, CN and C₃, respectively. NO detectable contribution exists from the CO⁺ ion. Decreases in the fluxes, observed with a periodicity P=6ᵈ.10 + 0ᵈ.02 coincide with desconnection events detected at Bosque Alegre and other observatories. If they correspond to the frequency of passage of magnetic solar sectors by the comet, a solar "sinodic" rotation period P_c= 24ᵈ.4 + 0ᵈ.8, with respect to the comet, is deduced, in every good agreement with the mean value of the apparetn solar rotation with respect to the comet.