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| SN 2021hpr: A Normal Type Ia Supernova Showing Excess Emission in the Early Rising Phase | |
Iskandar, Abdusamatjan1,2 ; Wang, Xiaofeng3; Esamdin, Ali1,2; Zeng, Xiangyun4,5; Pellegrino, Craig6; Yan, Shengyu3; Liu, Jialian3; Filippenko, Alexei V.7; Howell, D. Andrew8,9; McCully, Curtis; Brink, Thomas G.7; Hu, Maokai3; Yang, Yi3,7; Zheng, WeiKang; Lu, Guoliang; Zhang, Jujia10,11; Song, Cuiying3; Huang, Ruifeng3; Amaro, Rachael C.12,13; Bai, Chunhai1; Dettman, Kyle G.14; Galbany, Lluis15,16; Hiramatsu, Daichi17,18; Azalee, Bostroem K.19; Itagaki, Koichi20; Jha, Saurabh W.14; Ma, Shuguo21; Sand, David J.19; Andrews, Jennifer E.22; Jencson, Jacob23; Milne, Peter19; Pearson, Jeniveve19; Shrestha, Manisha19; Smith, Nathan19; Koenyves-Toth, Reka24,26; Wyatt, Samuel27; Zhang, Xuan1; Yaqup, Shahidin1; Wang, Letian1; Zhang, Mengfan1
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| 2025-05-09 | |
| Source Publication | ASTROPHYSICAL JOURNAL
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| ISSN | 0004-637X |
| Volume | 984Issue:2Pages:57-62 |
| Contribution Rank | 1 |
| Abstract | We present extensive optical observations of a nearby Type Ia supernova (SN Ia), SN 2021hpr, located in the spiral galaxy NGC 3147 at a distance of similar to 45 Mpc. Our observations cover a phase within similar to 1-2 days to similar to 290 days after the explosion. SN 2021hpr is found to be a spectroscopically normal SN Ia, with an absolute B-band peak magnitude of Mmax(B)approximate to-19.16 +/- 0.14 mag and a postpeak decline rate of Delta m15(B) = 1.0 +/- 0.01 mag. Early time light curves showed a similar to 7.0% excess emission compared to a homogeneously expanding fireball model, likely due to SN ejecta interacting with a companion or immediate circumstellar matter (CSM). The optical spectra of SN 2021hpr are overall similar to those of normal SNe Ia, but characterized by prominent detached high-velocity features (HVFs) of Si ii and Ca ii in the early phase. After examining a small sample of well-observed normal SNe Ia, we find that the HVFs are likely common for the subgroup with early excess emission. The association of an early bump feature with the HVFs could be attributed to density or abundance enhancement at the outer layer of the exploding star, likely as a result of interactions with companion/CSM or experiencing more complete burning. Nevertheless, the redshifted Fe ii and Ni ii lines in the nebular-phase spectra of SN 2021hpr, contrary to the blueshift trend seen in other SNe Ia showing early bump features, indicate its peculiarity in the explosion that remains to be understood. |
| DOI | 10.3847/1538-4357/adb3a4 |
| Indexed By | SCI |
| Language | 英语 |
| WOS Keyword | NEAR-INFRARED OBSERVATIONS ; DELAYED-DETONATION MODELS ; LATE-TIME SPECTRA ; EARLY LIGHT-CURVE ; WHITE-DWARFS ; PROGENITOR CONSTRAINTS ; NEBULAR SPECTROSCOPY ; OPTICAL OBSERVATIONS ; DATA RELEASE ; ULTRAVIOLET |
| Funding Project | MOST divided by National Natural Science Foundation of China (NSFC)https://doi.org/10.13039/501100001809[12288102] ; MOST divided by National Natural Science Foundation of China (NSFC)https://doi.org/10.13039/501100001809[12033003] ; MOST divided by National Natural Science Foundation of China (NSFC)https://doi.org/10.13039/501100001809[12203029] ; MOST divided by National Natural Science Foundation of China (NSFC)https://doi.org/10.13039/501100001809[12373038] ; MOST divided by National Natural Science Foundation of China (NSFC)https://doi.org/10.13039/501100001809[11803076] ; MOST divided by National Natural Science Foundation of China (NSFC)https://doi.org/10.13039/501100001809[12433007] ; National Natural Science Foundation of China[2024D01D32] ; Natural Science Foundation of Xinjiang Uygur Autonomous Region[2023TSYCLJ0053] ; Natural Science Foundation of Xinjiang Uygur Autonomous Region[2023TSYCCX0101] ; Tianshan Talent Training Program[ZYYD2025QY2] ; Central Guidance for Local Science and Technology Development Fund ; New Cornerstone Science Foundation[2020-XBQNXZ-016] ; Chinese Academy of Sciences (CAS) Light of West China Program[XDB0550100] ; Chinese Academy of Sciences (CAS) Light of West China Program[XDB0550000] ; Strategic Priority Research Program of the Chinese Academy of Sciences ; High-Level Talent-Heaven Lake Program of Xinjiang Uygur Autonomous Region of China[FK-134432] ; NKFIH/OTKA ; National Research, Development and Innovation (NRDI) Office of Hungary[AST-1911151] ; National Research, Development and Innovation (NRDI) Office of Hungary[AST-1911225] ; NSF |
| WOS Research Area | Astronomy & Astrophysics |
| WOS Subject | Astronomy & Astrophysics |
| WOS ID | WOS:001485158300001 |
| Publisher | IOP Publishing Ltd |
| Funding Organization | MOST divided by National Natural Science Foundation of China (NSFC)https://doi.org/10.13039/501100001809 ; National Natural Science Foundation of China ; Natural Science Foundation of Xinjiang Uygur Autonomous Region ; Tianshan Talent Training Program ; Central Guidance for Local Science and Technology Development Fund ; New Cornerstone Science Foundation ; Chinese Academy of Sciences (CAS) Light of West China Program ; Strategic Priority Research Program of the Chinese Academy of Sciences ; High-Level Talent-Heaven Lake Program of Xinjiang Uygur Autonomous Region of China ; NKFIH/OTKA ; National Research, Development and Innovation (NRDI) Office of Hungary ; NSF |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.xao.ac.cn/handle/45760611-7/7746 |
| Collection | 光学天文与技术应用研究室_变星研究团组 |
| Corresponding Author | Wang, Xiaofeng; Esamdin, Ali |
| Affiliation | 1.Chinese Acad Sci, Xinjiang Astron Observ, Urumqi 830011, Xinjiang, Peoples R China 2.Univ Chinese Acad Sci, Sch Astron & Space Sci, Beijing 100049, Peoples R China 3.Tsinghua Univ, Phys Dept, Beijing, Peoples R China 4.Three Gorges Univ, Ctr Astron & Space Sci, Yichang 443000, Peoples R China 5.Three Gorges Univ, Coll Sci, Yichang 443000, Peoples R China 6.Goddard Space Flight Ctr, 8800 Greenbelt Rd, Greenbelt, MD 20771 USA 7.Univ Calif Berkeley, Dept Astron, Berkeley, CA 94720 USA 8.Las Cumbres Observ, 6740 Cortona Dr,Suite 102, Goleta, CA 93117 USA 9.Univ Calif Santa Barbara, Dept Phys, Santa Barbara, CA 93106 USA 10.Chinese Acad Sci, Yunnan Observ YNAO, Kunming 650216, Peoples R China 11.Int Ctr Supernovae, Yunnan Key Lab, Kunming, Peoples R China 12.Univ Arizona, Dept Astron, 933 North Cherry Ave, Tucson, AZ 85719 USA 13.Univ Arizona, Steward Observ, 933 North Cherry Ave, Tucson, AZ 85721 USA 14.Rutgers State Univ, Dept Phys & Astron, Piscataway, NJ 17837 USA 15.Inst Space Sci ICE CSIC, Campus UAB,Carrer Can Magrans S-N, Barcelona, Spain 16.Inst Estudis Espacials Catalunya IEEC, Castelldefels, Barcelona, Spain 17.Harvard & Smithsonian, Ctr Astrophys, 60 Garden St, Cambridge, MA 02138 USA 18.NSF AI Inst Artificial Intelligence & Fundamental, Cambridge, MA USA 19.Univ Arizona, Steward Observ, 933 North Cherry Ave, Tucson, AZ USA 20.Itagaki Astron Observ, Yamagata, Yamagata 9902492, Japan 21.Chinese Acad Sci, Key Lab Opt Astron, Natl Astron Observ, Beijing 100012, Peoples R China 22.Gemini Observ, 670 North Aohoku Pl, Hilo, HI USA 23.Caltech, IPAC, Mail Code 100-22,1200 E Calif Blvd, Pasadena, CA USA 24.HUN REN Res Ctr Astron & Earth Sci, Konkoly Observ, Konkoly Th M ut 15-17, Budapest, Hungary 25.MTA Ctr Excellence, Budapest, Hungary 26.Univ Szeged, Inst Phys, Dept Expt Phys, Dom ter 9, Szeged, Hungary 27.NASA, Astrophys Sci Div, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA |
| First Author Affilication | Xinjiang Astronomical Observatory, Chinese Academy of Sciences |
| Corresponding Author Affilication | Xinjiang Astronomical Observatory, Chinese Academy of Sciences |
| Recommended Citation GB/T 7714 | Iskandar, Abdusamatjan,Wang, Xiaofeng,Esamdin, Ali,et al. SN 2021hpr: A Normal Type Ia Supernova Showing Excess Emission in the Early Rising Phase[J]. ASTROPHYSICAL JOURNAL,2025,984(2):57-62. |
| APA | Iskandar, Abdusamatjan.,Wang, Xiaofeng.,Esamdin, Ali.,Zeng, Xiangyun.,Pellegrino, Craig.,...&Zhang, Mengfan.(2025).SN 2021hpr: A Normal Type Ia Supernova Showing Excess Emission in the Early Rising Phase.ASTROPHYSICAL JOURNAL,984(2),57-62. |
| MLA | Iskandar, Abdusamatjan,et al."SN 2021hpr: A Normal Type Ia Supernova Showing Excess Emission in the Early Rising Phase".ASTROPHYSICAL JOURNAL 984.2(2025):57-62. |
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| Iskandar-2025-SN 202（40639KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Application Full Text | |
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