Abstract
We present the results of low-resolution optical spectrophotometric observations of Nova Cygni 1992 obtained at the Pine Bluff Observatory between 8 and 450 days after outburst. The early emission spectra show the Balmer spectrum of H I, Fe II lines, and some He I lines. As the nova declines, the continuum fades rapidly, and the emission lines become dominant. The decreasing densities in the expanding shell and the hardening of the nova's radiation field lead to the emergence by 1993 April 30, of the nebular lines [O III] λ4363, [O II] λ5007, and [Ne III] λ3869
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