Early-time Observations of SN 2023wrk: A Luminous Type Ia Supernova with Significant Unburned Carbon in the Outer Ejecta

被引：1

作者：

Liu, Jialian ^{[1
]}

Wang, Xiaofeng ^{[1
]}

Andrade, Cristina ^{[2
]}

Duverne, Pierre-Alexandre ^{[3
]}

Zhang, Jujia ^{[4
,5
,6
]}

Li, Liping ^{[4
,5
,6
]}

Wang, Zhenyu ^{[4
,5
,6
,7
]}

Navarete, Felipe ^{[8
]}

Reguitti, Andrea ^{[9
,10
]}

Schuldt, Stefan ^{[11
,12
]}

Cai, Yongzhi ^{[4
,5
,6
]}

Filippenko, Alexei V. ^{[13
]}

Yang, Yi ^{[1
,13
]}

Brink, Thomas G. ^{[13
]}

Zheng, Weikang ^{[13
]}

Esamdin, Ali ^{[14
]}

Iskandar, Abdusamatjan ^{[14
,15
]}

Bai, Chunhai ^{[14
]}

Liu, Jinzhong ^{[14
]}

Li, Xin ^{[16
]}

Hu, Maokai ^{[1
]}

Li, Gaici ^{[1
]}

Li, Wenxiong ^{[17
]}

Ma, Xiaoran ^{[1
]}

Yan, Shengyu ^{[1
]}

Mo, Jun ^{[1
]}

Adami, Christophe ^{[18
]}

Akl, Dalya ^{[19
]}

Antier, Sarah ^{[20
]}

Broens, Eric ^{[21
]}

Ducoin, Jean-Gregoire ^{[22
]}

Elhosseiny, Eslam ^{[23
]}

Esposito, Thomas M. ^{[13
]}

Freeberg, Michael ^{[24
,25
]}

Gokuldass, Priyadarshini ^{[26
]}

Hello, Patrice ^{[27
]}

Karpov, Sergey ^{[28
]}

Marquez, Isabel ^{[29
]}

Masek, Martin ^{[30
]}

Pyshna, Oleksandra ^{[31
]}

Rajabov, Yodgor ^{[32
]}

Saint-Gelais, Denis ^{[33
,34
,35
]}

Serrau, Marc ^{[36
]}

Sokoliuk, Oleksii ^{[37
,38
]}

Takey, Ali ^{[23
]}

Tanasan, Manasanun ^{[39
]}

Turpin, Damien ^{[40
]}

机构：

[1] Tsinghua Univ, Phys Dept, Beijing 100084, Peoples R China

[2] Univ Minnesota, Sch Phys & Astron, Minneapolis, MN 55455 USA

[3] Univ Paris Cite, CNRS, Astroparticule & Cosmol, F-75013 Paris, France

[4] Chinese Acad Sci, Yunnan Observ, Kunming 650216, Peoples R China

[5] Int Ctr Supernovae, Yunnan Key Lab, Kunming 650216, Peoples R China

[6] Chinese Acad Sci, Key Lab Struct & Evolut Celestial Objects, Kunming 650216, Peoples R China

[7] Univ Chinese Acad Sci, Beijing 100049, Peoples R China

[8] SOAR Telescope NSFs NOIR Lab, Avda Juan Cisternas 1500, La Serena 1700000, Chile

[9] INAF Osservatorio Astron Brera, Via E Bianchi 46, I-23807 Merate, LC, Italy

[10] INAF Osservatorio Astron Padova, Vicolo Osservatorio 5, I-35122 Padua, Italy

[11] INAF IASF Milano, Via A Corti 12, I-20133 Milan, Italy

[12] Univ Studi Milano, Dipartimento Fis, Via Celoria 16, I-20133 Milan, Italy

[13] Univ Calif Berkeley, Dept Astron, Berkeley, CA 94720 USA

[14] Chinese Acad Sci, Xinjiang Astron Observ, Urumqi 830011, Xinjiang, Peoples R China

[15] Univ Chinese Acad Sci, Sch Astron & Space Sci, Beijing 100049, Peoples R China

[16] Beijing Acad Sci & Technol, Beijing Planetarium, Beijing 100044, Peoples R China

[17] Chinese Acad Sci, Natioal Astron Observ China, Beijing 100012, Peoples R China

[18] Aix Marseille Univ, CNRS, CNES, LAM, Marseille, France

[19] Amer Univ Sharjah, Phys Dept, Sharjah, U Arab Emirates

[20] Univ Cote Azur, Observ Cote Azur, CNRS, Lab JL Lagrange, Blvd Observ, F-06304 Nice, France

[21] KNC, Vereniging Sterrenkunde, B-2400 Mol, Belgium

[22] Aix Marseille Univ, CPPM, CNRS, CPPM,IN2P3, Marseille, France

[23] Natl Res Inst Astron & Geophys NRIAG, 1 El Marsad St, Cairo 11421, Helwan, Egypt

[24] Hidden Valley Observ HVO, KNC, AAVSO, Colfax, WI 54730 USA

[25] iTelescope, Utah Desert Remote Observ, Beryl Junction, UT 84714 USA

[26] Embry Riddle Aeronaut Univ, Coll Arts & Sci, Dept Phys Sci, Daytona Beach, FL 32114 USA

[27] Univ Paris Saclay, IJCLab, CNRS, IN2P3, Orsay, France

[28] Czech Acad Sci, Inst Phys, CEICO, Slovance 1999-2, CZ-18221 Prague, Czech Republic

[29] Inst Astrofis Andalucia IAA CSIC, Glorieta Astron, Granada 18008, Spain

[30] Czech Acad Sci, FZU Inst Phys, Slovance 1999-2, CZ-18221 Prague, Czech Republic

[31] Taras Shevchenko Natl Univ Kyiv, Astron Observ, Kyiv, Ukraine

[32] Uzbek Acad Sci, Ulugh Beg Astron Inst, Astron Str 33, Tashkent 100052, Uzbekistan

[33] Soc Astron Queretana, SociedaKNC, Queretaro, Mexico

[34] RAPAS Observ Paris, Paris, France

[35] Canadad Astron Queretana, Le Club Astronome Amateur Rosemere Quebec, Squamish, BC, Canada

[36] KNC, Soc Astron France, Observ Dauban, F-04150 Banon, France

[37] Taras Shevchenko Natl Univ Kyiv, Astron Observ, Observatorna Str 3, UA-04053 Kyiv, Ukraine

[38] Natl Acad Sci Ukraine, Main Astron Observ, 27 Acad Zabolotnoho Str, UA-03143 Kyiv, Ukraine

[39] Natl Astron Res Inst Thailand Publ Org, 260,Moo 4, Chiang Mai 50180, Thailand

[40] Univ Paris Cite, Univ Paris Saclay, CEA, CNRS,AIM, F-91191 Gif Sur Yvette, France

来源：

ASTROPHYSICAL JOURNAL | 2024年 / 973卷 / 02期

基金：

中国国家自然科学基金; 国家重点研发计划;

关键词：

HUBBLE-SPACE-TELESCOPE; NEAR-INFRARED OBSERVATIONS; EARLY EXCESS EMISSION; LIGHT CURVES; DATA RELEASE; ABUNDANCE STRATIFICATION; ABSOLUTE MAGNITUDES; PHOTOMETRIC SYSTEM; OPTICAL-SPECTRA; LOCAL VALUE;

D O I：

10.3847/1538-4357/ad6600

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present extensive photometric and spectroscopic observations of the nearby Type Ia supernova (SN) 2023wrk at a distance of about 40 Mpc. The earliest detection of this SN can be traced back to a few hours after the explosion. Within the first few days, the light curve shows a bump feature, while the B - V color is blue and remains nearly constant. The overall spectral evolution is similar to that of an SN 1991T/SN 1999aa-like SN Ia, while the C ii lambda 6580 absorption line appears to be unusually strong in the first spectrum taken at t approximate to -15.4 days after the maximum light. This carbon feature disappears quickly in subsequent evolution but it reappears at around the time of peak brightness. The complex evolution of the carbon line and the possible detection of Ni iii absorption around 4700 & Aring; and 5300 & Aring; in the earliest spectra indicate macroscopic mixing of fuel and ash. The strong carbon lines are likely related to the collision of SN ejecta with unbound carbon, consistent with the predictions of pulsational delayed-detonation or carbon-rich circumstellar-matter interaction models. Among those carbon-rich SNe Ia with strong C ii lambda 6580 absorption at very early times, the line-strength ratio of C ii to Si ii and the B - V color evolution are found to exhibit large diversity, which may be attributed to different properties of unbound carbon and outward-mixing 56Ni.

引用

页数：21

共 28 条

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