Panel a): light curves of LSQ13fn, corrected for Galactic reddening of E(B−V) = 0.0538 mag, using R(V) = 3.1 and the extinction law of Cardelli et al. (1989). The absolute magnitude scale was determined by applying the distance modulus (μ = 37.1 mag). Downward pointing arrows indicate limiting magnitudes. Vertical grey dashed lines represent the epochs of the presented spectra of LSQ13fn, while the bold vertical dashed line marks a discontinuity in the x-axis scale. Panel b): B−V colours of LSQ13fn and comparison SNe. Panel c): V−I colours of LSQ13fn and comparison SNe. For LSQ13fn, a combination of the V−I and V−i colours is shown. Panel d): pseudo-bolometric light curves of LSQ13fn and comparison SNe. No bolometric correction has been attempted. The Mbol axis was determined assuming Mbol, ⊙ = 4.83 mag and L⊙ = 3.846 × 1033 erg s-1.
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