SN 2023xqm: A gradually fading Ia supernova exhibiting isolated high-velocity signatures
文献类型：期刊论文
| 作者 | Zeng, Xiangyun6,7,8; Luo, Yijing7,8; Wang, Xiaofeng2,3,6; Li, Xin6; Yang, Yi2,3; Zheng, Sheng7,8; Zeng, Shuguang7,8; Huang, Yao7,8; Li, Sai7,8; Howell, D. Andrew4,5 |
| 刊名 | ASTRONOMY & ASTROPHYSICS
 |
| 出版日期 | 2025-05-28 |
| 卷号 | 698页码:12 |
| 关键词 | supernovae: general supernovae: individual: SN 2023xqm |
| ISSN号 | 0004-6361 |
| DOI | 10.1051/0004-6361/202452864 |
| 产权排序 | 1;2;3;4;5;6;7;8 |
| 英文摘要 | We conducted an exhaustive analysis combining optical photometry and spectroscopy of the type Ia supernova designated SN 2023xqm. Our observational period spanned from the two weeks preceding to 88 days after the B-band peak luminosity time. We determined the peak brightness in the B-band to be -18.90 +/- 0.50 mag, and it is accompanied by a moderately slow decay rate of 0.90 +/- 0.07 mag. The maximum quasi-bolometric luminosity was estimated to be 1.52 x 10(43) erg s(-1) and correlated with a calculated Ni-56 mass of 0.74 +/- 0.05 M-circle dot, aligning with the modestly reduced rate of light curve decay. A plateau that can be observed in the r - i color curve might correlate with the minor elevation noted between the principal and secondary peaks of the i-band light curve. An initial spectral analysis of SN 2023xqm revealed distinct high-velocity features (HVFs) in Ca II that contrast with the subdued HVFs observed in Si II. Such attributes may stem from variations in ionization or temperature or from scenarios involving enhanced element abundance, suggesting a naturally lower photospheric temperature for SN 2023xqm, which could be indicative of incomplete burning during the white dwarf's detonation. The observed traits in the light curve and the spectral features offer significant insights into the variability among type Ia supernovae and their explosion dynamics. |
| WOS关键词 | DELAYED-DETONATION MODELS ; CORE-DEGENERATE SCENARIO ; HUBBLE-SPACE-TELESCOPE ; INFRARED LIGHT CURVES ; EARLY EXCESS EMISSION ; DOUBLE WHITE-DWARFS ; OPTICAL SPECTROSCOPY ; POPULATION SYNTHESIS ; ESC OBSERVATIONS ; LOCAL VALUE |
| 资助项目 | National Natural Science Foundation of Chinahttp://dx.doi.org/10.13039/501100001809[2024D01D32] ; Natural Science Foundation of Xinjiang Uygur Autonomous Region[12288102] ; Natural Science Foundation of Xinjiang Uygur Autonomous Region[12033003] ; National Natural Science Foundation of China ; High Level Talent-Heaven Lake Program of Xinjiang Uygur Autonomous Region of China ; Tencent Xplorer prize[24CD013] ; InnovationProject of Beijing Academy of Science and Technology[AST-1911225] ; InnovationProject of Beijing Academy of Science and Technology[AST-1911151] ; NSF[NN12AR55G] ; NSF[80NSSC18K0284] ; NSF[80NSSC18K1575] ; NASA ; Asteroid Terrestrial-impact Last Alert System (ATLAS) project ; Asteroid Terrestrial-impact Last Alert System (ATLAS) ; Queen's University Belfast ; South African Astronomical Observatory |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:001497903100016 |
| 出版者 | EDP SCIENCES S A |
| 资助机构 | National Natural Science Foundation of Chinahttp://dx.doi.org/10.13039/501100001809 ; Natural Science Foundation of Xinjiang Uygur Autonomous Region ; National Natural Science Foundation of China ; High Level Talent-Heaven Lake Program of Xinjiang Uygur Autonomous Region of China ; Tencent Xplorer prize ; InnovationProject of Beijing Academy of Science and Technology ; NSF ; NASA ; Asteroid Terrestrial-impact Last Alert System (ATLAS) project ; Asteroid Terrestrial-impact Last Alert System (ATLAS) ; Queen's University Belfast ; South African Astronomical Observatory |
| 源URL | [http://ir.xao.ac.cn/handle/45760611-7/7798]  |
| 专题 | 光学天文与技术应用研究室_变星研究团组 |
| 通讯作者 | Wang, Xiaofeng; Zheng, Sheng |
| 作者单位 | 1.Chinese Acad Sci, Xinjiang Astron Observ, Urumqi 830011, Xinjiang, Peoples R China 2.Tsinghua Univ, Phys Dept, Beijing 100084, Peoples R China 3.Tsinghua Univ, Tsinghua Ctr Astrophys THCA, Beijing 100084, Peoples R China 4.Univ Calif Santa Barbara, Dept Phys, Santa Barbara, CA 93106 USA 5.Las Cumbres Observ, 6740 Cortona Dr Suite 102, Goleta, CA 93117 USA 6.Beijing Acad Sci Technol, Beijing Planetarium, Beijing 100044, Peoples R China 7.China Three Gorges Univ, Coll Math & Phys, Yichang 443000, Peoples R China 8.China Three Gorges Univ, Ctr Astron & Space Sci, Yichang 443000, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zeng, Xiangyun,Luo, Yijing,Wang, Xiaofeng,et al. SN 2023xqm: A gradually fading Ia supernova exhibiting isolated high-velocity signatures[J]. ASTRONOMY & ASTROPHYSICS,2025,698:12. |
| APA | Zeng, Xiangyun.,Luo, Yijing.,Wang, Xiaofeng.,Li, Xin.,Yang, Yi.,...&Hu, Lei.(2025).SN 2023xqm: A gradually fading Ia supernova exhibiting isolated high-velocity signatures.ASTRONOMY & ASTROPHYSICS,698,12. |
| MLA | Zeng, Xiangyun,et al."SN 2023xqm: A gradually fading Ia supernova exhibiting isolated high-velocity signatures".ASTRONOMY & ASTROPHYSICS 698(2025):12. |
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来源：新疆天文台
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