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The Type Ic hypernova SN 2002ap
Mazzali, PA; Deng, J; Maeda, K; Nomoto, K; Umeda, H; Hatano, K; Iwamoto, K; Yoshii, Y; Kobayashi, Y; Minezaki, T; Doi, M; Enya, K; Tomita, H; Smartt, SJ; Kinugasa, K; Kawakita, H; Ayani, K; Kawabata, K; Yamaoka, H; Qiu, YL; Motohara, K; Gerardy, CL; Fesen, R; Kawabata, KS; Iye, M; Kashikawa, N; Kosugi, G; Ohyama, Y; Takada-Hidai, M; Zhao, G; Chornock, R; Filippenko, AV; Benetti, S; Turatto, M
AbstractPhotometric and spectroscopic data of the energetic Type Ic supernova (SN) 2002ap are presented, and the properties of the SN are investigated through models of its spectral evolution and its light curve. The SN is spectroscopically similar to the "hypernova" SN 1997ef. However, its kinetic energy [similar to (4-20) x 10(51) ergs] and the mass ejected (2.5-5 M(.)) are smaller, resulting in a faster evolving light curve. The SN synthesized similar to 0.07 M(.) of (56)Ni, and its peak luminosity was similar to that of normal SNe. Brightness alone should not be used to define a hypernova, whose defining character, namely very broad spectral features, is the result of high kinetic energy. The likely main-sequence mass of the progenitor star was 20-25 M(.), which is also lower than that of both hypernovae SN 1997ef and SN 1998bw. SN 2002ap appears to lie at the low-energy and low-mass end of the hypernova sequence as it is known so far. Observations of the nebular spectrum, which is expected to dominate by the summer of 2002, are necessary to confirm these values.
KeywordGamma Rays : Bursts Line : Formation Line : Identification Supernovae : General Nuclear Supernovae : Individual (Sn 2002ap) Reactions Nucleosynthesis Abundances
Indexed BySCI
WOS IDWOS:000176005600013
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Affiliation1.Univ Tokyo, Sch Sci, Res Ctr Early Universe, Bunkyo Ku, Tokyo 1130033, Japan
2.Univ Tokyo, Dept Astron, Bunkyo Ku, Tokyo 1130033, Japan
3.Osserv Astron Trieste, INAF, I-34131 Trieste, Italy
4.Nihon Univ, Dept Phys, Tokyo 1018308, Japan
5.Univ Tokyo, Inst Astron, Tokyo 1810015, Japan
6.Univ Cambridge, Inst Astron, Cambridge CB3 0HA, England
7.Gunma Astron Observ, Gunma 3770702, Japan
8.Bisei Astron Observ, Okayama 7141411, Japan
9.Kyushu Univ, Sch Sci, Dept Phys, Chuo Ku, Fukuoka 8108560, Japan
10.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China
11.Dartmouth Coll, Dept Phys & Astron, Wilder Lab 6127, Hanover, NH 03755 USA
12.Grad Univ Adv Studies, Dept Astron Sci, Tokyo 1818588, Japan
13.Natl Astron Observ Japan, Dept Astron Sci, Hilo, HI 96720 USA
14.Tokai Univ, Liberal Arts Educ Ctr, Hiratsuka, Kanagawa 25912, Japan
15.Univ Calif Berkeley, Dept Astron, Berkeley, CA 94720 USA
16.Osserv Astron Padova, INAF, I-35122 Padua, Italy
Recommended Citation
GB/T 7714
Mazzali, PA,Deng, J,Maeda, K,et al. The Type Ic hypernova SN 2002ap[J]. ASTROPHYSICAL JOURNAL,2002,572(1):L61-L65.
APA Mazzali, PA.,Deng, J.,Maeda, K.,Nomoto, K.,Umeda, H.,...&Turatto, M.(2002).The Type Ic hypernova SN 2002ap.ASTROPHYSICAL JOURNAL,572(1),L61-L65.
MLA Mazzali, PA,et al."The Type Ic hypernova SN 2002ap".ASTROPHYSICAL JOURNAL 572.1(2002):L61-L65.
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