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Fig. 6


Double-logarithmic plots of the nova parameter correlations from HPH2014. The solid grey lines indicate a robust power-law fit with corresponding 95% confidence regions in light grey. The correlations displayed are a) ton vs. toff; b) blackbody kT vs. toff; c) R-band optical decay time t2,R vs. ton; and d) expansion velocity vs. ton. All time scales are in units of days after outburst. Overplotted as blue asterisks are the parameters of M31N 2008-12a as derived in Sect. 3 or by DHS2015. The error bars on these values are smaller than the size of the symbols.

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