Photometric and Spectroscopic Properties of Type Ia Supernova 2018oh with Early Excess Emission from the $Kepler$ 2 Observations
- Li, W.
- Wang, X.
- Vinkó, J.
- Mo, J.
- Hosseinzadeh, G.
- Sand, D.J.
- Lin, H.
- Zhang, T.
- Zhang, J.
- Chen, Z.
- Xiang, D.
- Rui, L.
- Huang, F.
- Li, X.
- Zhang, X.
- Li, L.
- Baron, E.
- Derkacy, J.M.
- Zhao, X.
- Sai, H.
- Zhang, K.
- Wang, L.
- Howell, D.A.
- Mccully, C.
- Arcavi, I.
- Valenti, S.
- Hiramatsu, D.
- Burke, J.
- Rest, A.
- Garnavich, P.
- Tucker, B.E.
- Narayan, G.
- Shaya, E.
- Margheim, S.
- Zenteno, A.
- Villar, A.
- Dimitriadis, G.
- Foley, R.J.
- Pan, Y.-C.
- Coulter, D.A.
- Fox, O.D.
- Jha, S.W.
- Jones, D.O.
- Kasen, D.N.
- Kilpatrick, C.D.
- Piro, A.L.
- Riess, A.G.
- Rojas-Bravo, C.
- Shappee, B.J.
- Holoien, T.W.-S.
- Stanek, K.Z.
- Drout, M.R.
- Auchettl, K.
- Kochanek, C.S.
- Brown, J.S.
- Bose, S.
- Bersier, D.
- Brimacombe, J.
- Chen, P.
- Dong, S.
- Holmbo, S.
- Muñoz, J.A.
- Mutel, R.L.
- Post, R.S.
- Prieto, J.L.
- Shields, J.
- Tallon, D.
- Thompson, T.A.
- Vallely, P.J.
- Villanueva, S.
- Smartt, S.J.
- Smith, K.W.
- Chambers, K.C.
- Flewelling, H.A.
- Huber, M.E.
- Magnier, E.A.
- Waters, C.Z.
- Schultz, A.S.B.
- Bulger, J.
- Lowe, T.B.
- Willman, M.
- Sárneczky, K.
- Pál, A.
- Wheeler, J.C.
- Bódi, A.
- Bognár, Zs.
- Csák, B.
- Cseh, B.
- Csörnyei, G.
- Hanyecz, O.
- Ignácz, B.
- Kalup, Cs.
- Könyves-Tóth, R.
- Kriskovics, L.
- Ordasi, A.
- Rajmon, I.
- Sódor, A.
- Szabó, R.
- Szakáts, R.
- Zsidi, G.
- Milne, P.
- Andrews, J.E.
- Smith, N.
- Bilinski, C.
- Brown, P.J.
- Nordin, J.
- Williams, S.C.
- Galbany, L.
- Palmerio, J.
- Hook, I.M.
- Inserra, C.
- Maguire, K.
- Cartier, Régis
- Razza, A.
- Gutiérrez, C.P.
- Hermes, J.J.
- Reding, J.S.
- Kaiser, B.C.
- Tonry, J.L.
- Heinze, A.N.
- Denneau, L.
- Weiland, H.
- Stalder, B.
- Barentsen, G.
- Dotson, J.
- Barclay, T.
- Gully-Santiago, M.
- Hedges, C.
- Cody, A.M.
- Howell, S.
- Coughlin, J.
- van Cleve, J.E.
- Vinícius de Miranda Cardoso, J.
- Larson, K.A.
- Mccalmont-Everton, K.M.
- Peterson, C.A.
- Ross, S.E.
- Reedy, L.H.
- Osborne, D.
- Mcginn, C.
- Kohnert, L.
- Migliorini, L.
- Wheaton, A.
- Spencer, B.
- Labonde, C.
- Castillo, G.
- Beerman, G.
- Steward, K.
- Hanley, M.
- Larsen, R.
- Gangopadhyay, R.
- Kloetzel, R.
- Weschler, T.
- Nystrom, V.
- Moffatt, J.
- Redick, M.
- Griest, K.
- Packard, M.
- Muszynski, M.
- Kampmeier, J.
- Bjella, R.
- Flynn, S.
- Elsaesser, B.
DOIAbstract
International audienceSupernova (SN) 2018oh (ASASSN-18bt) is the first spectroscopically confirmed Type Ia supernova (SN Ia) observed in the Kepler field. The Kepler data revealed an excess emission in its early light curve, allowing us to place interesting constraints on its progenitor system. Here we present extensive optical, ultraviolet, and near-infrared photometry, as well as dense sampling of optical spectra, for this object. SN 2018oh is relatively normal in its photometric evolution, with a rise time of 18.3 ± 0.3 days and Δm 15(B) = 0.96 ± 0.03 mag, but it seems to have bluer B − V colors. We construct the “UVOIR” bolometric light curve having a peak luminosity of 1.49 × 1043 erg s−1, from which we derive a nickel mass as 0.55 ± 0...
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