Massive stars exploding in a He-rich circumstellar medium - XI. Diverse evolution of five Ibn SNe 2020nxt, 2020taz, 2021bbv, 2023utc, and 2024aej

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Table 2.

Light-curve parameters for SNe Ibn.

Object	MJD_exp.	MJD_peak	t_rise	M_peak(r/R)	L_peak	E_rad.	Sources
SN			(d)	(mag)	(10⁴² erg s⁻¹)	(10⁴⁸ erg)
2020nxt	59031.1 $_{- 0.5}^{+ 0.5}$ $^{+0.5}_{-0.5}$	59038.4 $_{- 0.1}^{+ 0.1}$ $^{+0.1}_{-0.1}$ (o)	7.3 ± 0.5	−19.1 ± 0.1(o)	8.36 ± 0.28	8.56 ± 0.42	1
2020taz	59099.1 $_{- 0.6}^{+ 0.8}$ $^{+0.8}_{-0.6}$	59110.9 $_{- 0.5}^{+ 1.5}$ $^{+1.5}_{-0.5}$ (o)	11.8 ± 1.7	−18.0 ± 0.2	3.58 ± 0.24	6.91 ± 0.61	1
2021bbv	59233.5 $_{- 1.0}^{+ 1.0}$ $^{+1.0}_{-1.0}$	< 59242.2(r)	< 9.7	< −18.8	6.68 ± 0.82	8.94 ± 1.16	1
2023utc	60226.9 $_{- 2.5}^{+ 2.5}$ $^{+2.5}_{-2.5}$	60233.3 $_{- 0.1}^{+ 0.1}$ $^{+0.1}_{-0.1}$ (r)	6.4 ± 2.5	−16.4 ± 0.5	0.71 ± 0.28	0.89 ± 0.38	1
2024aej	60321.4 $_{- 0.8}^{+ 0.6}$ $^{+0.6}_{-0.8}$	60328.1 $_{- 0.2}^{+ 0.5}$ $^{+0.5}_{-0.2}$ (r)	6.7 ± 0.9	−19.2 ± 0.1	9.86 ± 0.95	9.89 ± 1.13	1
2006jc	–	54012.3 ± 4	< 10	< −18.61	5.92 ± 1.43	7.08 ± 1.53	2
2010al	55267.5 ± 1.5	55283.8 ± 1.1(R)	16.0 ± 1.9	−18.86 ± 0.21	5.25 ± 0.85	10.85 ± 1.79	3
OGLE12-006	56203.3 ± 4.0	56217.6 ± 1.8(I)	13.5 ± 4.2	−19.65 ± 0.19(I)	7.93 ± 0.99	32.46 ± 5.78	4
ASASSN-14ms	–	57025.2 ± 0.5(V)	–	−20.33 ± 0.15(V)	22.89 ± 3.24	47.80 ± 6.73	5
2014av	56760.0 ± 3.8	56770.6 ± 1.2(R)	10.3 ± 3.9	−19.76 ± 0.16	11.23 ± 1.61	12.28 ± 1.92	6
2015U	57062.6 ± 0.4	57071.5 ± 0.8(r)	8.8 ± 0.9	−19.95 ± 1.13	24.29 ± 4.94	30.56 ± 6.68	7
ASASSN-15ed	–	57086.9 ± 0.6(r)	> 4.3	−20.04 ± 0.20	16.61 ± 3.08	21.00 ± 3.80	8
2018jmt	58455.0 ± 0.2	58465.7 ± 1.2(g)	10.7 ± 1.2	−19.03 ± 0.37(g)	7.16 ± 1.48	10.78 ± 2.27	9
2019cj	58482.2 ± 1.1	58492.4 ± 0.2(V)	10.2 ± 1.1	−18.94 ± 0.19(V)	5.48 ± 0.87	9.93 ± 1.61	9
2019uo	58499.4 ± 1.2	58508.1 ± 0.5(r)	8.7 ± 1.3	−18.30 ± 0.24	3.84 ± 0.12	4.68 ± 0.17	10
2019wep	58824.5 ± 2.0	58828.5 ± 2(V)	4 ± 3	−18.18 ± 0.95	2.54 ± 0.19	2.71 ± 0.18	11
2019kbj	58664.49 ± 1.0	58670.1 ± 0.26(r)	5.6 ± 1.0	−18.99 ± 0.24	8.29 ± 0.32	9.67 ± 0.66	12
2020bqj	58880.0 ± 1.5	58884.2(r)	< 5.7	−19.23 ± 0.07	–	–	13

Notes. Object name (column 1), explosion MJD (column 2), peak MJD (column 3), rise time (column 4), peak absolute magnitude (column 5), peak quasi-bolometric luminosity (column 6), radiated energy (column 7), sources of data (column 8): 1 = This paper; 2 = Foley et al. (2007), Pastorello et al. (2007, 2008a); 3 = Pastorello et al. (2015a); 4 = Pastorello et al. (2015b); 5 = Vallely et al. (2018), Wang et al. (2021a); 6 = Pastorello et al. (2016); 7 = Tsvetkov et al. (2015), Pastorello et al. (2015e), Shivvers et al. (2016), Hosseinzadeh et al. (2017); 8 = Pastorello et al. (2015d); 9 = Wang et al. (2024a); 10 = Gangopadhyay et al. (2020); 11 = Gangopadhyay et al. (2022); 12 = Ben-Ami et al. (2023); 13 = Kool et al. (2021).

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