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| DOI | 10.3847/2041-8213/AD5DA4 | ||||
| Año | 2024 | ||||
| Tipo | artículo de investigación |
Citas Totales
Autores Afiliación Chile
Instituciones Chile
% Participación
Internacional
Autores
Afiliación Extranjera
Instituciones
Extranjeras
We present early-time, hour-to-day cadence spectroscopy of the nearby Type II supernova (SN II) 2024ggi, which was discovered at a phase when the SN shock had just emerged from the red supergiant (RSG) progenitor star. Over the first few days after the first light, SN 2024ggi exhibited prominent narrow emission lines formed through intense and persistent photoionization of the nearby circumstellar material (CSM). In the first 63 hr, spectral lines of He, C, N, and O revealed a rapid rise in ionization as a result of the progressive sweeping up of the CSM by the shock. The duration of the IIn-like spectra indicates a dense and relatively confined CSM distribution extending up to similar to 4 x 1014 cm. Spectral modeling reveals that a CSM mass-loss rate at this region exceeding 5 x 10-3 M circle dot yr-1 is required to reproduce low-ionization emissions, which dramatically exceeds that of an RSG. Analyzing the H alpha emission shift implies the velocity of the unshocked outer CSM to be between 20 and 40 km s-1, matching the typical wind velocity of an RSG. The differences between the inner and outer layers of the CSM and an RSG progenitor highlight a complex mass-loss history before the explosion of SN 2024ggi.
| Ord. | Autor | Género | Institución - País |
|---|---|---|---|
| 1 | Zhang, J. | - |
CASSACA - China
Yunnan Key Lab - China Yunnan Observatories - China International Centre of Supernovae - China Chinese Academy of Sciences - China |
| 2 | Dessart, Luc | - |
Sorbonne Univ - Francia
Institut d’Astrophysique de Paris - Francia |
| 3 | Wang, Xiaofeng | - |
Tsinghua Univ - China
Tsinghua University - China |
| 4 | Zhai, Qian | - |
CASSACA - China
Yunnan Observatories - China Chinese Academy of Sciences - China |
| 5 | Yang, Y. | - |
Tsinghua Univ - China
UNIV CALIF BERKELEY - Estados Unidos Tsinghua University - China University of California, Berkeley - Estados Unidos |
| 6 | Li, Liping | - |
CASSACA - China
Yunnan Key Lab - China Yunnan Observatories - China International Centre of Supernovae - China Chinese Academy of Sciences - China |
| 7 | Lin, Han | - |
CASSACA - China
Yunnan Key Lab - China Yunnan Observatories - China International Centre of Supernovae - China Chinese Academy of Sciences - China |
| 8 | Valerin, G. | Hombre |
INAF Osservatorio Astron Padova - Italia
Osservatorio Astronomico di Padova - Italia |
| 9 | Cai, Y. Z. | - |
CASSACA - China
Yunnan Key Lab - China Yunnan Observatories - China International Centre of Supernovae - China Chinese Academy of Sciences - China |
| 10 | Guo, Z. | - |
Universidad de Valparaíso - Chile
Univ Hertfordshire - Reino Unido Instituto Milenio de Astrofísica - Chile University of Hertfordshire - Reino Unido |
| 11 | Wang, Lingzhi | - |
CASSACA - China
Chinese Academy of Sciences South America Center for Astronomy - Chile Chinese Academy of Sciences - China |
| 12 | Zhao, Zeyi | - |
CASSACA - China
Yunnan Key Lab - China Yunnan Observatories - China International Centre of Supernovae - China Chinese Academy of Sciences - China |
| 13 | Wang, Zhenyu | - |
CASSACA - China
Yunnan Key Lab - China Yunnan Observatories - China International Centre of Supernovae - China Chinese Academy of Sciences - China |
| 14 | Yan, Shengyu | - |
Tsinghua Univ - China
Tsinghua University - China |
| Fuente |
|---|
| National Natural Science Foundation of China |
| National Key R&D Program of China |
| National Key Research and Development Program of China |
| Chinese Academy of Sciences |
| National Natural Science Foundation of China (NSFC) |
| Millennium Science Initiative |
| Chinese Academy of Sciences (CAS) |
| People's Government of Yunnan Province |
| Chinese Academy of Sciences South America Center for Astronomy |
| CAS South America Center for Astronomy (CASSACA) in Santiago, Chile |
| ANID Fondecyt |
| Agencia Nacional de Investigación y Desarrollo |
| ANID, Millennium Science Initiative |
| Yunnan Fundamental Research Projects |
| China Manned Space Project |
| Tencent XPLORER Prize |
| ANID Fondecyt Postdoctoral |
| International Centre of Supernovae, and Yunnan Key Laboratory |
| Light of West China Program provided by the Chinese Academy of Sciences |
| Top-notch Young Talents Program of Yunnan Province |
| Agradecimiento |
|---|
| This work is supported by the National Key R&D Program of China with No. 2021YFA1600404, the National Natural Science Foundation of China (12173082), the science research grants from the China Manned Space Project with No. CMS-CSST-2021-A12, the Yunnan Fundamental Research Projects (grants 202201AT070069 and 202401BC070007), the Top-notch Young Talents Program of Yunnan Province, the Light of West China Program provided by the Chinese Academy of Sciences, the International Centre of Supernovae, and Yunnan Key Laboratory (No. 202302AN360001). X.W. is supported by the National Natural Science Foundation of China (NSFC grants 12288102 and 1203300) and the Tencent Xplorer Prize. Y.-Z.C. is supported by the National Natural Science Foundation of China (NSFC; grant No. 12303054) and the Yunnan Fundamental Research Projects (grant No. 202401AU070063). Z.G. is supported by the ANID FONDECYT Postdoctoral program No. 3220029. This work was funded by ANID, Millennium Science Initiative, AIM23-0001. This work has made use of the University of Hertfordshire's high-performance computing facility (http://uhhpc.herts.ac.uk). L.W. is sponsored (in part) by the Chinese Academy of Sciences (CAS), through a grant to the CAS South America Center for Astronomy (CASSACA) in Santiago, Chile. |
| This work is supported by the National Key R&D Program of China with No. 2021YFA1600404, the National Natural Science Foundation of China (12173082), the science research grants from the China Manned Space Project with No. CMS-CSST-2021-A12, the Yunnan Fundamental Research Projects (grants 202201AT070069 and 202401BC070007), the Top-notch Young Talents Program of Yunnan Province, the Light of West China Program provided by the Chinese Academy of Sciences, the International Centre of Supernovae, and Yunnan Key Laboratory (No. 202302AN360001). X.W. is supported by the National Natural Science Foundation of China (NSFC grants 12288102 and 1203300) and the Tencent Xplorer Prize. Y.-Z.C. is supported by the National Natural Science Foundation of China (NSFC; grant No. 12303054) and the Yunnan Fundamental Research Projects (grant No. 202401AU070063). Z.G. is supported by the ANID FONDECYT Postdoctoral program No. 3220029. This work was funded by ANID, Millennium Science Initiative, AIM23-0001. This work has made use of the University of Hertfordshire\u2019s high-performance computing facility (http://uhhpc.herts.ac.uk). L.W. is sponsored (in part) by the Chinese Academy of Sciences (CAS), through a grant to the CAS South America Center for Astronomy (CASSACA) in Santiago, Chile. |
| This work is supported by the National Key R&D Program of China with No. 2021YFA1600404, the National Natural Science Foundation of China (12173082), the science research grants from the China Manned Space Project with No. CMS-CSST-2021-A12, the Yunnan Fundamental Research Projects (grants 202201AT070069 and 202401BC070007), the Top-notch Young Talents Program of Yunnan Province, the Light of West China Program provided by the Chinese Academy of Sciences, the International Centre of Supernovae, and Yunnan Key Laboratory (No. 202302AN360001). X.W. is supported by the National Natural Science Foundation of China (NSFC grants 12288102 and 1203300) and the Tencent Xplorer Prize. Y.-Z.C. is supported by the National Natural Science Foundation of China (NSFC; grant No. 12303054) and the Yunnan Fundamental Research Projects (grant No. 202401AU070063). Z.G. is supported by the ANID FONDECYT Postdoctoral program No. 3220029. This work was funded by ANID, Millennium Science Initiative, AIM23-0001. This work has made use of the University of Hertfordshire\u2019s high-performance computing facility (http://uhhpc.herts.ac.uk). L.W. is sponsored (in part) by the Chinese Academy of Sciences (CAS), through a grant to the CAS South America Center for Astronomy (CASSACA) in Santiago, Chile. |