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Astron. Astrophys. 338, 1006-1014 (1998)

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3. Light curve

Light curves of this nova have been given in some previous works (e.g. Munari et al. 1996; Ohsima et al. 1996) and are presented also on some pages of world wide web., e.g. by Stig Linander. To meet the convenience of the readers, however, we present the light curve and colours in Fig. 1. The V magnitudes are mainly due to the material prepared by Stig Linander on the www. , and some other data given in IAU Circulars are added. The UBV photometric data were obtained by Russian astronomers (E.A. Karitskaya, N.V. Metlova, S. Yu. Shugarov, etc.) and were supplied on VSNET by V. Goranskij.

[FIGURE] Fig. 1. Light curve and colours of V723 Cas. The data were prepared mainly by Stig Linander and by V. Goranskij

The first rising of the nova from a minimum about V[FORMULA]18 (Williams 1995) to V[FORMULA]11 very likely took place from JD2449928 to 30 (1995 July 29-31). Then after somewhat slowing, the nova reached a semi-steady V magnitude of about 9, rising during November at almost 8.6 and suddenly, at the beginning of December, from 8.5 to a maximum of V[FORMULA]7.1 on December 17 (JD2450069) 1.

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© European Southern Observatory (ESO) 1998

Online publication: September 17, 1998