UBVRI photometry of Nova Cygni 1975

Details UBVRI photometry of Nova Cygni 1975 UBVRI photometry of Nova Cygni 1975

Jan 1976

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976natur.259..186r&link_type=abstract

Nature, vol. 259, Jan. 22, 1976, p. 186, 187.

Computer Science

7

Light Curve, Novae, Periodic Variations, Stellar Spectrophotometry, Ubv Spectra, Radiation Measurement, Stellar Radiation, Stellar Spectra

Scientific paper

Results are reported for multicolor photometric observations of Nova Cygni 1975 which were made to check on a periodic variation of about 3.2 hr that was detected when the nova was at an apparent magnitude of 6. It is found that all the light curves showed a variation of about 0.08 mag and that a second minimum appeared in every band, was centered at 22 hr 05 min, and was shifted about 110 min from the maximum. Measurements of a comparison star with respect to a set of standard stars confirm the short-term variation of the nova. Results of observations for the nights of September 17 and 18, 1975, are shown to imply either different features from night to night or a real period in excess of 3 hr 48 min.

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