Abstract
The development of the post-nova light curve of V1500 Cyg inUBV andHβ, for 15 nights in September and October 1975 are presented. We confirm previous reports that superimposed on the steady decline of the light curve are small amplitude cyclic variations. The times of maxima and minima are determined. These together with other published values yield the following ephemerides from JD 2 442 661 to JD 2 442 674:
with standard errors of the fits of ±0 d. 0052 for the minima and ±0 d. 0091 for the maxima.
Assuming V1500 Cyg is similar to novae in M31, we foundr=750 pc and a pre-nova absolute photographic magnitude greater than 9.68.
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Publications of the Rothney Astrophysical Observatory No. 8.
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Chia, T.T., Milone, E.F. & Robb, R. A few observations of and remarks on V1500 Cygni. Astrophys Space Sci 48, 3–19 (1977). https://doi.org/10.1007/BF00643035
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DOI: https://doi.org/10.1007/BF00643035