Brennan, S.J.Fraser, M.Johansson, J.Pastorello, A.Kotak, R.Stevance, H.F.Chen, T.-W.Eldridge, J.J.Bose, S.Brown, P.J.Callis, E.Cartier, R.Dennefeld, M.Dong, SuboDuffy, P.Elias Rosa, N.Hosseinzadeh, G.Hsiao, E.Kuncarayakti, H.Martin Carrillo, A.Monard, B.Pignata, G.Sand, D.Shappee, B.J.Smartt, S.J.Tucker, B.E.Wyrzykowski, L.Abbot, H.Benetti, S.Bento, J.Blondin, S.Chen, PingDelgado, A.Galbany, L.Gromadzki, M.Gutierrez, C.P.Hanlon, L.Harrison, D.L.Hiramatsu, D.Hodgkin, S.T.Holoien, T.W.-S.Howell, D.A.Inserra, C.Kankare, E.Kozłowski, S.Müller Bravo, T.E.Maguire, K.Mccully, C.Meintjes, P.Morrell, N.Nicholl, M.O'neill, D.Pietrukowicz, P.Poleski, R.Prieto, J.L.Rau, A.Reichart, D.E.Schweyer, T.Shahbandeh, M.Skowron, J.Sollerman, J.Soszyński, I.Stritzinger, M.D.Szymański, M.Tartaglia, L.Udalski, A.Ulaczyk, K.Young, D.R.Van Leeuwen, M.Van Soelen, B.2023-11-272023-11-272022-07-01Monthly Notices of the Royal Astronomical Society, Volume 513, Issue 4, Pages 5666 - 5685, 1 July 20220035-8711https://repositorio.unab.cl/xmlui/handle/ria/54162Indexación: Scopus.We present the bolometric light curve, identification and analysis of the progenitor candidate, and preliminary modelling of AT 2016jbu (Gaia16cfr). We find a progenitor consistent with a ∼22-25 M⊙ yellow hypergiant surrounded by a dusty circumstellar shell, in agreement with what has been previously reported. We see evidence for significant photometric variability in the progenitor, as well as strong Hα emission consistent with pre-existing circumstellar material. The age of the environment, as well as the resolved stellar population surrounding AT 2016jbu, supports a progenitor age of >10 Myr, consistent with a progenitor mass of ∼22 M⊙. A joint analysis of the velocity evolution of AT 2016jbu and the photospheric radius inferred from the bolometric light curve shows the transient is consistent with two successive outbursts/explosions. The first outburst ejected material with velocity ∼650 km s-1, while the second, more energetic event ejected material at ∼4500 km s-1. Whether the latter is the core collapse of the progenitor remains uncertain. We place a limit on the ejected 56Ni mass of [removed]enStars: MassiveSupernovae: GeneralSupernovae: Individual: AT 2016jbuArtículoCC BY 4.0 DEED Atribución 4.0 Internacional10.1093/mnras/stac1228