Multifilter photometry and polarimetry of Nova Cygni 1978 /V 1668 Cygni/

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Bandpass Filters, Novae, Polarimetry, Stellar Spectrophotometry, Broadband, Cosmic Dust, Infrared Spectra, Interstellar Matter, Linear Polarization, Periodic Variations

Scientific paper

The results from more than 2700 filtered photoelectric observations of Nova Cyg 1978, obtained at the Flower and Cook Observatory, are summarized. The nova's decline through about 5 magnitudes is documented and amalgamated with similar observations already published by other groups. Variability on time scales up to 0.08 day and with peak-to-peak amplitudes up to 0.13m were common. No short-term periodicity was found. In the two-color plane the variability of the color indices is highly nonthermal and perhaps shows an inflection of slope about the time that dust was reported from IR observations by another group. A distance of 3 kpc is suggested. A few linear polarization measures, taken before dust formation, are listed. From the large interstellar component, a net intrinsic polarization is derived for the post-dust stages.

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