Spectral dataset of stripped-envelope supernovae from the Tsinghua supernova group
文献类型：期刊论文
| 作者 | Xiang, Danfeng; Wang, Xiaofeng; Zhang JJ(张居甲); Yan, Shengyu; Lin H(林含); Rui, Liming; Mo, Jun; Zhang, Xinghan; Sai, Hanna; Miao, Cheng |
| 刊名 | ASTRONOMY & ASTROPHYSICS
 |
| 出版日期 | 2026-04-14 |
| 卷号 | 708 |
| 关键词 | methods: data analysis techniques: spectroscopic stars: massive supernovae: general |
| ISSN号 | 0004-6361 |
| DOI | 10.1051/0004-6361/202558301 |
| 产权排序 | 第3完成单位 |
| 文献子类 | Article |
| 英文摘要 | Context. The extent of envelope stripping in progenitor stars is directly reflected in the diversity of spectral features that are observed in stripped-envelope supernovae (SESNe).Aims. Through extensive spectral observation and analysis, we aim to clarify the statistical differences between the subclasses of SESNe. Methods. The Tsinghua supernova group obtained 249 optical spectra of 62 SESNe from 2010 to 2020, covering phases from -16 to over 190 days relative to maximum light. Most spectra were obtained during the photospheric phases after the supernova explosion. For each spectrum, the pseudo-equivalent widths and blueshift velocities of the principal lines were measured. We further investigated the common spectral features by analyzing their velocity and strength correlations across all subtypes. Results. We identified the feature near 6200 & Aring; in SNe Ib as H alpha through a comparison with SNe IIb and Ic. This resolves inconsistent interpretations in the literature. Our finding reveals prevalent residual hydrogen in SNe Ib, further supporting a continuous stripping sequence from SNe IIb to Ib. The velocity among different subtypes of stripped-envelope SNe increases, with SNe IIb exhibiting the lowest line velocities, followed by Ib, Ic, and Ic-BL. Typically, the O I lines in SNe Ic/Ic-BL are stronger than those seen in SNe IIb/Ib. In nebular phases, the [Ca II] emission dominates [O I] in SNe IIb/Ib, while [O I] is stronger in SNe Ic, including in the He-rich SN 2016coi. This spectral dichotomy implies that progenitors of SNe Ic (BL) have more massive CO cores and hence higher initial masses. |
| 学科主题 | 天文学 ; 恒星与银河系 |
| URL标识 | 查看原文 |
| 出版地 | 17, AVE DU HOGGAR, PA COURTABOEUF, BP 112, F-91944 LES ULIS CEDEX A, FRANCE |
| WOS关键词 | CORE-COLLAPSE SUPERNOVAE ; NEAR-INFRARED OBSERVATIONS ; ICONIC DUST LANE ; OPTICAL OBSERVATIONS ; IIB SUPERNOVA ; DIVERSE PROPERTIES ; NEBULAR SPECTRA ; CARBON-MONOXIDE ; RICH TRANSIENT ; IB SUPERNOVAE |
| 资助项目 | N/A |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:001739940400001 |
| 出版者 | EDP SCIENCES S A |
| 资助机构 | [202501AW070001] ; [12288102] ; [12033003] ; [12503047] ; [12173082] ; [12333008] ; [12403061] ; [12303054] ; [12473032] ; [12090040] ; [12090042] ; [12427804] ; [XDB1160202] ; [2021YFA1600404] ; [202501AV070012] ; [202401BC070007] ; [202302AN360001] ; [2024YFA1611603] ; [202401AU070063] ; [202501AS070078] ; [CMS-CSST-2025-A13] ; [ZYYD2025QY27] |
| 版本 | 出版稿 |
| 源URL | [http://ir.ynao.ac.cn/handle/114a53/29129]  |
| 专题 | 云南天文台_丽江天文观测站（南方基地） |
| 通讯作者 | Xiang, Danfeng; Wang, Xiaofeng; Zhang JJ(张居甲) |
| 推荐引用方式 GB/T 7714 | Xiang, Danfeng,Wang, Xiaofeng,Zhang JJ,et al. Spectral dataset of stripped-envelope supernovae from the Tsinghua supernova group[J]. ASTRONOMY & ASTROPHYSICS,2026,708. |
| APA | Xiang, Danfeng.,Wang, Xiaofeng.,张居甲.,Yan, Shengyu.,林含.,...&Zheng, Jie.(2026).Spectral dataset of stripped-envelope supernovae from the Tsinghua supernova group.ASTRONOMY & ASTROPHYSICS,708. |
| MLA | Xiang, Danfeng,et al."Spectral dataset of stripped-envelope supernovae from the Tsinghua supernova group".ASTRONOMY & ASTROPHYSICS 708(2026). |
入库方式： OAI收割
来源：云南天文台
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