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Table A.4.

Properties of the identified or modelled progenitors of SNe IIb. SN 1987A is also added for comparison.

Object Progenitor log(Teff/K) log(L/L) Radius Mass SN has Peak abs. Reference
detected (R) (M) 1st peak? Mag (r/R)
SN 1987A Yes (BSG) 4.20±0.04 5.04±0.10 45±15 ∼20 - −16.4 Podsiadlowski (1992)

SN 1993J Yes (RSG) 3.63±0.05 5.1±0.3 600 15 Yes −17.6 Maund et al. (2004)
SN 2008ax Yes (BSG) 4.05 0.17 + 0.25 $ ^{+0.25}_{-0.17} $ 4.69 0.27 + 0.61 $ ^{+0.61}_{-0.27} $ 50 < 25 No −18.0 Folatelli et al. (2015)
SN 2011dh Yes (YSG) 3.78±0.02 4.92±0.20 200 13±3 No? −17.2 Maund et al. (2011)
SN 2011fu No - - 450 13-18 Yes −18.1 Morales-Garoffolo et al. (2015)
SN 2011hs No - - 500-600 12-15 No −16.9 Bufano et al. (2014)
SN 2013df Yes (RSG) 3.63±0.01 4.94±0.06 600 13-17 Yes −17.8 Van Dyk et al. (2014)
SN 2016gkg Yes (BSG) 3.98 0.16 + 0.21 $ ^{+0.21}_{-0.16} $ 5.14 0.39 + 0.22 $ ^{+0.22}_{-0.39} $ 140 100 + 130 $ ^{+130}_{-100} $ 15-20 Yes −17.2 Kilpatrick et al. (2017)
SN 2017gkk Yes (YSG) 3.72±0.08 5.17±0.04 - 16 - - Niu et al. (2024)
SN 2024abfo Yes (YSG) 3.80-3.85 5.00±0.05 215-270 15 faint −16.5 This work

Notes. If the progenitor was not detected in archival images its parameters are inferred from hydrodynamical modelling. The masses reported are the initial masses of the progenitors. We note that an early peak might be visible in the g-band light curve of SN 2011dh published by Arcavi et al. (2011).

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