The supernova 1998S in NGC 3877: Another supernova with Wolf-Rayet star features in pre-maximum spectrum
文献类型：期刊论文
| 作者 | Liu, QZ; Hu, JY; Hang, HR; Qiu, YL; Zhu, ZX ; Qiao, QY
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| 刊名 | ASTRONOMY & ASTROPHYSICS SUPPLEMENT SERIES
 |
| 出版日期 | 2000-06-01 |
| 卷号 | 144期号:2页码:219-225 |
| 关键词 | supernovae : general supernovae : individual (SN 1998S) |
| ISSN号 | 0365-0138 |
| 英文摘要 | We present the BVR photometry and the spectra of SN 1998S taken about four months after discovery, beginning a week and 6 days before maximum brightness respectively. The light curves show a steep and linear dt:cline. which are consistent with those of SN 1979C and are typical of a SN II-L. An absolute magnitude at maximum M-B(O) less than or equal to -18.7 is derived, which is more than 2 mag brighter than the regular SNII and indicates this SN is a member of the rare class of Bright SNII. The B - V color evolution at early epoch is also typical of linear SN II with a maximum (B - V) value of +1.35, similar to the typical Ts pe II-L SN 1980K. The spectral evolution is typical for SN II-L, very similar to that of the SN 1979C. They, however, showed some differences. The spectrum before maximum showed high-ionization N III and He II emission lines superposed on a strong blue continuum. Around the maximum light the high-ionizatisn emission lines disappeared, leaving weak H I. He I emission lines, which are similar to those of SN 1983K. The extraordinary feature on the post-maximum spectra is the narrow emission P Cygni profile superposed on a much broader P Cygni structure in all five Balmer lines, Ha to HE. Such feature is reminiscent of the post-maximum spectra of SN 1984E. Rapid spectral and photometric evolution, together with the presence of obvious P Cygni profile, suggests that SN 1998S is more consistent with the nature of a type II-L, supernova than that of a IIn supernova, although narrow lines are present on the premaximum spectrum. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 学科主题 | Astronomy & Astrophysics |
| 类目[WOS] | Astronomy & Astrophysics |
| 研究领域[WOS] | Astronomy & Astrophysics |
| 关键词[WOS] | II SUPERNOVAE ; OPTICAL-SPECTRA ; LIGHT CURVES ; NOVA 1979C |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000088229400005 |
| 公开日期 | 2013-02-01 |
| 源URL | [http://libir.pmo.ac.cn/handle/332002/8283]  |
| 专题 | 紫金山天文台_宇宙伽马暴、中子星及相关物理研究团组 |
| 作者单位 | 1.Chinese Acad Sci, Purple Mt Observ, Nanjing 210008, Peoples R China 2.Chinese Acad Sci, Natl Astron Observ, Beijing 100864, Peoples R China 3.Univ Amsterdam, Astron Inst, NL-1098 SJ Amsterdam, Netherlands 4.Chinese Acad Sci, Beijing Astron Observ, Beijing 100080, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu, QZ,Hu, JY,Hang, HR,et al. The supernova 1998S in NGC 3877: Another supernova with Wolf-Rayet star features in pre-maximum spectrum[J]. ASTRONOMY & ASTROPHYSICS SUPPLEMENT SERIES,2000,144(2):219-225. |
| APA | Liu, QZ,Hu, JY,Hang, HR,Qiu, YL,Zhu, ZX,&Qiao, QY.(2000).The supernova 1998S in NGC 3877: Another supernova with Wolf-Rayet star features in pre-maximum spectrum.ASTRONOMY & ASTROPHYSICS SUPPLEMENT SERIES,144(2),219-225. |
| MLA | Liu, QZ,et al."The supernova 1998S in NGC 3877: Another supernova with Wolf-Rayet star features in pre-maximum spectrum".ASTRONOMY & ASTROPHYSICS SUPPLEMENT SERIES 144.2(2000):219-225. |
入库方式： OAI收割
来源：紫金山天文台
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