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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 14.

Comparison of the normalized spectrum of SN 2020uem and a “combined” spectrum created by adding the spectra of SN 1991T and SN 2010jl. The combined spectrum is composed by 2.5 × 91T-flux and 1 × 10jl-flux, and additionally normalized by a factor of 3.5. Each base spectrum in the combination is already normalized by its continuum, which is the same spectrum plotted in Figure 13. The gray shaded regions are the same as those in Figure 13.

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