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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
earth and planetary sciences
OISTER optical and near-infrared observations of the super-Chandrasekhar supernova candidate SN 2012dn: Dust emission from the circumstellar shell
Publications of the Astronomical Society of Japan, Volume 68, No. 5, Article 68, Year 2016
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Description
We present extensively dense observations of the super-Chandrasekhar supernova (SC SN) candidate SN 2012dn from -11 to +140 d after the date of its B-band maximum in the optical and near-infrared (NIR) wavelengths conducted through the OISTER ToO (Optical and Infrared Synergetic Telescopes for Education and Research Target of Opportunity) program. The NIR light curves and color evolutions up to 35 days after the B-band maximum provided an excellent match with those of another SC SN 2009dc, providing further support to the nature of SN 2012dn as an SC SN. We found that SN 2012dn exhibited strong excesses in the NIR wavelengths from 30 d after the B-band maximum. The H- and Ks-band light curves exhibited much later maximum dates at 40 and 70 d after the B-band maximum, respectively, compared with those of normal SNe Ia. The H- and Ks-band light curves subtracted by those of SN 2009dc displayed plateaued evolutions, indicating an NIR echo from the surrounding dust. The distance to the inner boundary of the dust shell is limited to 4.8-6.4 × 10-2 pc. No emission lines were found in its early phase spectra, suggesting that the ejecta-circumstellar material interaction could not occur. On the other hand, we found no signature that strongly supports the scenario of dust formation. The mass-loss rate of the pre-explosion system is estimated to be 10-6-10-5 M⊙ yr-1, assuming that the wind velocity of the system is 10-100 km s-1, which suggests that the progenitor of SN 2012dn could be a recurrent nova system. We conclude that the progenitor of this SC SN could be explained by the single-degenerate scenario. © 2016 The Author. Published by Oxford University Press on behalf of the Astronomical Society of Japan. All rights reserved.
Authors & Co-Authors
Yamanaka, Masayuki
Japan, Kobe
Konan University
Japan, Kyoto
Kyoto University
Maeda, Kei'ichi
Japan, Kyoto
Kyoto University
Japan, Tokyo
The University of Tokyo
Tanaka, Masaomi
Japan, Mitaka
National Institutes of Natural Sciences - National Astronomical Observatory of Japan
Tominaga, Nozorau
Japan, Kobe
Konan University
Japan, Tokyo
The University of Tokyo
Kawabata, Koji S.
Japan, Higashihiroshima
Hiroshima University
Takaki, Katsutoshi
Japan, Higashihiroshima
Hiroshima University
Kawabata, Miho
Japan, Higashihiroshima
Hiroshima University
Nakaoka, Tatsuya
Japan, Higashihiroshima
Hiroshima University
Ueno, Issei
Japan, Higashihiroshima
Hiroshima University
Akitaya, Hiroshi
Japan, Higashihiroshima
Hiroshima University
Nagayama, Takahiro
Japan, Nagoya
Nagoya University
Japan, Kagoshima
Kagoshima University
Takahashi, Jun
Japan, Kobe
University of Hyogo
Honda, Satoshi
Japan, Kobe
University of Hyogo
Omodaká, Toshihiro
Japan, Kagoshima
Kagoshima University
Miyanoshita, Ryo
Japan, Kagoshima
Kagoshima University
Watanabe, Makoto
Japan, Sapporo
Hokkaido University
Isogai, Mizuki
Japan, Mitaka
National Institutes of Natural Sciences - National Astronomical Observatory of Japan
Japan, Kyoto
Kyoto Sangyo University
Arai, Akira
Japan, Kobe
University of Hyogo
Japan, Kyoto
Kyoto Sangyo University
Itoh, Ryosuke
Japan, Higashihiroshima
Hiroshima University
Ui, Takahiro
Japan, Higashihiroshima
Hiroshima University
Uemura, Makoto
Japan, Higashihiroshima
Hiroshima University
Yoshida, Michitoshi
Japan, Higashihiroshima
Hiroshima University
Hanayama, Hidekazu
Japan, Mitaka
National Institutes of Natural Sciences - National Astronomical Observatory of Japan
Kuroda, Daisuke
Japan, Mitaka
National Institutes of Natural Sciences - National Astronomical Observatory of Japan
Ukita, Nobuharu
Japan, Mitaka
National Institutes of Natural Sciences - National Astronomical Observatory of Japan
Yanagisawa, Kenshi
Japan, Mitaka
National Institutes of Natural Sciences - National Astronomical Observatory of Japan
Izumiura, Hideyuki
Japan, Mitaka
National Institutes of Natural Sciences - National Astronomical Observatory of Japan
Saito, Yoshihiko
Japan, Tokyo
Tokyo Institute of Technology
Masumoto, Kazunari
Japan, Kashiwara
Osaka Kyoiku University
Ono, Rikako
Japan, Kashiwara
Osaka Kyoiku University
Noguchi, Ryo
Japan, Kashiwara
Osaka Kyoiku University
Matsumoto, Katsura
Japan, Kashiwara
Osaka Kyoiku University
Nogami, Daisaku
Japan, Kyoto
Kyoto University
Morokuma, Tomoki
Japan, Tokyo
The University of Tokyo
Oasa, Yumiko
Japan, Saitama
Saitama University
Sekiguchi, Kazuhiro
Japan, Mitaka
National Institutes of Natural Sciences - National Astronomical Observatory of Japan
Statistics
Citations: 24
Authors: 36
Affiliations: 13
Identifiers
Doi:
10.1093/pasj/psw047
ISSN:
00046264
Research Areas
Environmental