The aspherical properties of the energetic type Ic SN 2002ap as inferred from its nebular spectra
文献类型：期刊论文
| 作者 | Maeda, K.; Foley, R. J.; Nomoto, K.; Deng, J. ; Suzuki, T.; Iye, M.; Kashikawa, N.; Ohyama, Y.; Filippenko, A. V.; Qiu, Y.
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| 刊名 | ASTROPHYSICAL JOURNAL
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| 出版日期 | 2007-11-20 |
| 卷号 | 670期号:1页码:592-599 |
| 关键词 | Gamma Rays : Bursts Supernovae : Individual (Sn 2002ap) Nuclear Reactions Nucleosynthesis Abundances Supernovae : General |
| 英文摘要 | 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. |
| 语种 | 英语 |
| WOS记录号 | WOS:000250965400044 |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/8915]  |
| 专题 | 国家天文台_空间科学研究部 |
| 作者单位 | 1.Univ Tokyo, Inst Phys & Math Universe, Kashiwa, Chiba 2778582, Japan 2.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China 3.Nat Astron Observ Japan, Mitaka, Tokyo 1818588, Japan 4.Grad Univ Adv Studies, Dept Astron Sci, Mitaka, Tokyo 1818588, Japan 5.Natl Astron Observ, Hilo, HI 96720 USA 6.Max Planck Inst Astrophys, D-85748 Garching, Germany 7.Natl Inst Astrophys OATs, I-34143 Trieste, Italy 8.Univ Tokyo, Sch Sci, Dept Astron, Bunkyo Ku, Tokyo 1130033, Japan 9.Univ Tokyo, Sch Sci, Res Ctr Earll Univ, Bunkyo Ku, Tokyo 1130033, Japan 10.Univ Calif Santa Barbara, Kavli Inst Theoret Phys, Santa Barbara, CA 93106 USA |
| 推荐引用方式 GB/T 7714 | Maeda, K.,Foley, R. J.,Nomoto, 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 | Maeda, K..,Foley, R. J..,Nomoto, K..,Deng, J..,Suzuki, T..,...&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 | Maeda, K.,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. |
入库方式： OAI收割
来源：国家天文台
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