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The aspherical properties of the energetic type Ic SN 2002ap as inferred from its nebular spectra
Mazzali, P. A.; Kawabata, K. S.; Maeda, K.; Foley, R. J.; Nomoto, K.; Deng, J.; Suzuki, T.; Iye, M.; Kashikawa, N.; Ohyama, Y.; Filippenko, A. V.; Qiu, Y.; Wei, J.
2007-11-20
发表期刊ASTROPHYSICAL JOURNAL
卷号670期号:1页码:592-599
摘要The nebular spectra of the broad-lined, Type Ic SN 2002ap are studied by means of synthetic spectra. Two different modeling techniques are employed. In one technique, the SN ejecta are treated as a single zone, while in the other a density and abundance distribution in velocity is used from an explosion model. In both cases, heating caused by gamma-ray and positron deposition is computed ( in the latter case using a Monte Carlo technique to describe the propagation of gamma-rays and positrons), as is cooling via forbidden-line emission. The results are compared, and although general agreement is found, the stratified models are shown to reproduce the observed line profiles much more accurately than the single-zone model. The explosion produced similar to 0.1 M(circle dot) of (56)Ni. The distribution in velocity of the various elements is in agreement with that obtained from the early-time models, which indicated an ejected mass of similar to 2.5M(circle dot) with a kinetic energy of 4 x 10(51) erg. Nebular spectroscopy confirms that most of the ejected mass (similar to 1.2 M(circle dot)) was oxygen. The presence of an oxygen-rich inner core, combined with that of (56)Ni at high velocities as deduced from early-time models, suggests that the explosion was asymmetric, especially in the inner part.
关键词Gamma Rays : Bursts Supernovae : Individual (Sn 2002ap) Nuclear Reactions Nucleosynthesis Abundances Supernovae : General
收录类别SCI
语种英语
WOS记录号WOS:000250965400044
引用统计
被引频次:51[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.bao.ac.cn/handle/114a11/8915
专题空间科学研究部
作者单位1.Max Planck Inst Astrophys, D-85748 Garching, Germany
2.Natl Inst Astrophys OATs, I-34143 Trieste, Italy
3.Univ Tokyo, Sch Sci, Dept Astron, Bunkyo Ku, Tokyo 1130033, Japan
4.Univ Tokyo, Sch Sci, Res Ctr Earll Univ, Bunkyo Ku, Tokyo 1130033, Japan
5.Univ Calif Santa Barbara, Kavli Inst Theoret Phys, Santa Barbara, CA 93106 USA
6.Hiroshima Univ, Hiroshima Astrophys Sci Ctr, Hiroshima 7398526, Japan
7.Univ Tokyo, Coll Arts & Sci, Dept Earth Sci & Astron, Meguro Ku, Tokyo 1538902, Japan
8.Univ Calif Berkeley, Dept Astron, Berkeley, CA 94720 USA
9.Univ Tokyo, Inst Phys & Math Universe, Kashiwa, Chiba 2778582, Japan
10.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China
11.Nat Astron Observ Japan, Mitaka, Tokyo 1818588, Japan
12.Grad Univ Adv Studies, Dept Astron Sci, Mitaka, Tokyo 1818588, Japan
13.Natl Astron Observ, Hilo, HI 96720 USA
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Mazzali, P. A.,Kawabata, K. S.,Maeda, K.,et al. The aspherical properties of the energetic type Ic SN 2002ap as inferred from its nebular spectra[J]. ASTROPHYSICAL JOURNAL,2007,670(1):592-599.
APA Mazzali, P. A..,Kawabata, K. S..,Maeda, K..,Foley, R. J..,Nomoto, K..,...&Wei, J..(2007).The aspherical properties of the energetic type Ic SN 2002ap as inferred from its nebular spectra.ASTROPHYSICAL JOURNAL,670(1),592-599.
MLA Mazzali, P. A.,et al."The aspherical properties of the energetic type Ic SN 2002ap as inferred from its nebular spectra".ASTROPHYSICAL JOURNAL 670.1(2007):592-599.
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