SN 2017ati: A luminous type IIb explosion from a massive progenitor

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Table B.3.

Estimated ⁵⁶Ni mass from different methods.

Method	M_Ni (M_⊙)
Arnett, peak, pseudo-bol	0.40 ± 0.09
Clocchiatti & Wheeler (1997), peak, pseudo-bol	$0 . 29_{- 0.04}^{+ 0.05}$ $Mathematical equation: $ 0.29^{+0.05}_{-0.04} $$
Rodríguez et al. (2023), peak, pseudo-bol^a	$0 . 18_{- 0.04}^{+ 0.05}$ $Mathematical equation: $ 0.18^{+0.05}_{-0.04} $$
1987A, tail, pseudo-bol	0.47 ± 0.13
`MOSFiT`, Pure ⁵⁶Ni	$0 . 37_{- 0.10}^{+ 0.07}$ $Mathematical equation: $ 0.37^{+0.07}_{-0.10} $$
`MOSFiT`, ⁵⁶Ni + CSM	$0 . 49_{- 0.12}^{+ 0.19}$ $Mathematical equation: $ 0.49_{-0.12}^{+0.19} $$
`MOSFiT`, ⁵⁶Ni + Magnetar	$0 . 21_{- 0.12}^{+ 0.08}$ $Mathematical equation: $ 0.21^{+0.08}_{-0.12} $$

Notes. ^a $log (L_{peak} / M_{Ni}) - b Δ m_{15} (bol) = a - log (t_{L}^{peak} / 10 d)$ $Mathematical equation: $ \log\left(L_{\mathrm{peak}}/M_{\mathrm{Ni}}\right) - b\,\Delta m_{15}(\mathrm{bol}) = a - \log\left(t_{L}^{\mathrm{peak}}/10\,\mathrm{d}\right) $$ , a = 0.571 ± 0.020, b = 0.326 ± 0.028. For SN 2017ati, adopting L_peak = 3 × 10⁴² erg s⁻¹ and t_peak = 29.1 d, we obtain log(M_Ni/M_⊙) = − 0.745 ± 0.100 dex.

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