SN 2017fzw: A Fast-Expanding Type Ia Supernova with Transitional Features
文献类型:期刊论文
作者 | Huang, Jiayu11,12; Li, Yangyang11,12,13; Zeng, Xiangyun11,12; Zheng, Sheng11,12; Bird, Sarah A.11,12; Zhang JJ(张居甲)2,3,14; Esamdin, Ali4; Iskandar, Abdusamatjan4,10; Bostroem, K. Azaleee1,9; Zeng, Shuguang11,12 |
刊名 | UNIVERSE |
出版日期 | 2023-06 |
卷号 | 9期号:6 |
关键词 | supernovae general individual SN 2017fzw transitional supernovae |
DOI | 10.3390/universe9060295 |
产权排序 | 第4完成单位 |
文献子类 | Article |
英文摘要 | In this study, we analyzed the optical observations of a subluminous Type Ia supernova (SN Ia) 2017fzw, which exhibited high photospheric velocity (HV) at B-band maximum light. The absolute B-band peak magnitude was determined to be M-max(B) = -18.65 +/- 0.13 mag, similar to 91bg-like SNe Ia. An estimation of the rate of decline for the B-band light curve was determined to be Delta(m15) ( B) = 1.60 +/- 0.06 mag. The spectra of SN 2017fzw were similar to those of 91bg-like SNe Ia, with prominent Ti II and Si II lambda 5972 features at early phases, gradually transitioning to spectra resembling normal (mainly HV subclass) SNe Ia at later phases, with a stronger Ca II NIR feature. Notably, throughout all phases of observation, SN 2017fzw displayed spectral evolution characteristics that were comparable to those of HV SNe Ia, and at peak brightness, the Si II lambda 6355 velocity was determined to be 13,800 +/- 415 km s(-1) and a more pronounced Ca II NIR feature was also detected. Based on these findings, we classify SN 2017fzw as a transitional object with properties of both normal and 91bg-like SNe Ia, providing support for the hypothesis of a continuous distribution of supernovae between these two groups. |
学科主题 | 天文学 ; 恒星与银河系 |
URL标识 | 查看原文 |
出版地 | ST ALBAN-ANLAGE 66, CH-4052 BASEL, SWITZERLAND |
WOS关键词 | LIGHT CURVES ; LUMINOSITY ; PHOTOMETRY ; SN-1991T ; SPECTRA ; ULTRAVIOLET ; MAGNITUDES ; DETONATION ; DIVERSITY ; DISTANCES |
资助项目 | National Natural Science Foundation of China[12203029] ; National Natural Science Foundation of China[U2031202] |
WOS研究方向 | Astronomy & Astrophysics ; Physics |
语种 | 英语 |
出版者 | MDPI |
WOS记录号 | WOS:001021133300001 |
资助机构 | National Natural Science Foundation of China[12203029, U2031202] |
版本 | 出版稿 |
源URL | [http://ir.ynao.ac.cn/handle/114a53/26142] |
专题 | 云南天文台_丽江天文观测站(南方基地) 云南天文台_中国科学院天体结构与演化重点实验室 |
通讯作者 | Zeng, Xiangyun; Zheng, Sheng |
作者单位 | 1.Department of Physics, University of California, Santa Barbara, CA 93106-9530, USA; 2.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming 650216, China; 3.Center for Astronomical Mega-Science, Chinese Academy of Sciences, 20A Datun Road, Chaoyang District, Beijing 100012, China; 4.Xinjiang Astronomical Observatory, Chinese Academy of Sciences, Urumqi 830011, China; 5.Purple Mountain Observatory, Nanjing 210023, China 6.George P. and Cynthia Woods Mitchell Institute for Fundamental Physics & Astronomy, Department of Physics and Astronomy, Texas A&M University, 4242 TAMU, College Station, TX 77843, USA; 7.Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, China; 8.The School of Physics and Astronomy, Tel Aviv University, Tel Aviv 69978, Israel; 9.Las Cumbres Observatory, 6740 Cortona Drive Suite 102, Goleta, CA 93117-5575, USA; 10.School of Astronomy and Space Science, University of Chinese Academy of Sciences, Beijing 100049, China; |
推荐引用方式 GB/T 7714 | Huang, Jiayu,Li, Yangyang,Zeng, Xiangyun,et al. SN 2017fzw: A Fast-Expanding Type Ia Supernova with Transitional Features[J]. UNIVERSE,2023,9(6). |
APA | Huang, Jiayu.,Li, Yangyang.,Zeng, Xiangyun.,Zheng, Sheng.,Bird, Sarah A..,...&Hu, Lei.(2023).SN 2017fzw: A Fast-Expanding Type Ia Supernova with Transitional Features.UNIVERSE,9(6). |
MLA | Huang, Jiayu,et al."SN 2017fzw: A Fast-Expanding Type Ia Supernova with Transitional Features".UNIVERSE 9.6(2023). |
入库方式: OAI收割
来源:云南天文台
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