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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 8.

NIR spectrum of SN 2020uem taken with SWIMS at 196.7 days after discovery. The spectrum contains four spectra in the z, J, H, and Ks bands. The spectrum is corrected for redshift and Milky Way extinction. The flux scale is also calibrated with the J- and Ks-band photometry taken in the same night. Paschen and Brackett series are highlighted with red and orange vertical dotted lines, respectively, while He I is shown in blue.

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