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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 2.

Top panel: optical (BgVrRiI band) and NIR (JHKs band) light curves of SN 2020uem. The magnitudes in some bandpasses are shifted by the values shown in the legend. The left axis shows the apparent magnitude and the right axis shows the absolute magnitude, both in the Vega system. The gray dashed and dotted lines show decline rates of 0.75 mag/100 days and 1.2 mag/100 days, respectively. Bottom panel: color evolution (B − V, V − R, R − I, B − J, V − Ks, g − r, and r − i) of SN 2020uem.

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