Eruptive mass loss less than a year before the explosion of superluminous supernovae - I. The cases of SN 2020xga and SN 2022xgc

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Fig. 3.

Comparison of the photometric properties of SN 2020xga, SN 2022xgc, SN 2018ibb and iPTF16eh with the ZTF SLSN-I sample (Chen et al. 2023a). Top: KDE distribution of the M_g peak magnitudes for 78 ZTF SLSNe-I. Second: KDE plot of the e-folding rise time for 69 ZTF SLSNe-I. Third: e-folding decline time distribution for 54 ZTF SLSNe-I. Bottom: Rest-frame peak g − r color distribution for 39 ZTF SLSNe-I. The vertical colored lines along with the errors (shaded regions) illustrate the positions of SN 2020xga, SN 2022xgc, SN 2018ibb and iPTF16eh and the vertical black lines the median values of the ZTF sample.

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