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SN 2020uem: a Possible Thermonuclear Explosion within a Dense Circumstellar Medium. I. The Nature of Type IIn/Ia-CSM SNe from Photometry and Spectroscopy

  • Authors: Kohki Uno, Keiichi Maeda, Takashi Nagao, Tatsuya Nakaoka, Kentaro Motohara, Akito Tajitsu, Masahiro Konishi, Shuhei Koyama, Hidenori Takahashi, Masaomi Tanaka, Hanindyo Kuncarayakti, Miho Kawabata, Masayuki Yamanaka, Kentaro Aoki, Keisuke Isogai, Kenta Taguchi, Mao Ogawa, Koji S. Kawabata, Yuzuru Yoshii, Takashi Miyata, Ryo Imazawa

Kohki Uno et al 2023 The Astrophysical Journal 944 .

  • Provider: AAS Journals

Caption: Figure 12.

Hα/Hβ flux ratios as a function of time for interacting SNe: SN 2013L (IIn; Taddia et al. 2020), SN 2010jl (IIn; Fransson et al. 2014), SN 2005ip (IIn; Stritzinger et al. 2012), SN 2002ic (Ia-CSM; Hamuy et al. 2003), SN 2005gj (IIn/Ia-CSM; Aldering et al. 2006; Silverman et al. 2012), SN 2012ca (IIn/Ia-CSM; Inserra et al. 2014, 2016; Fox et al. 2015), and SN 2020uem. The gray dashed and dotted lines show the typical values of the Hα/Hβ ratio for SNe IIn and Ia-CSM, respectively, statistically investigated by Silverman et al. (2013b).

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