A statistical study of the metallicity of core-collapse supernovae based on VLT/MUSE integral-field-unit spectroscopy
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arXiv
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| Natura: | Preprint |
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2024
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| author | Xi, Qiang Sun, Ning-Chen Zhao, Yi-Han Maund, Justyn R. Niu, Zexi Singleton, Adam J. Liu, Jifeng |
| author_facet | Xi, Qiang Sun, Ning-Chen Zhao, Yi-Han Maund, Justyn R. Niu, Zexi Singleton, Adam J. Liu, Jifeng |
| contents | Metallicity plays a crucial role in the evolution of massive stars and their final core-collapse supernova (CCSN) explosions. Integral-field-unit (IFU) spectroscopy can provide a spatially resolved view of SN host galaxies and serve as a powerful tool to study SN metallicities. While early transient surveys targeted on high star formation rate and metallicity galaxies, recent untargeted, wide-field surveys (e.g., ASAS-SN, ZTF) have discovered large numbers of SNe without this bias. In this work, we construct a large sample of SNe discovered by wide-field untargted searches, consisting of 166 SNe of Types II(P), IIn, IIb, Ib and Ic at $z \leq 0.02$ with VLT/MUSE observations. This is currently the largest CCSN sample with IFU observations. With the strong-line method, we reveal the spatially-resolved metallicity maps of the SN host galaxies and acquire accurate metallicity measurements for the SN sites, finding a range from $12 + \log(\text{O/H}) = 8.1$ to 8.7 dex. And the metallicity distributions for different SN types are very close to each other, with mean and median values of 8.4--8.5 dex. Our large sample size narrows the 1$σ$ uncertainty down to only 0.05 dex. The apparent metallicity differences among SN types are all within $\sim$1$σ$ uncertainties and the metallicity distributions for different SN types are all consistent with being randomly drawn from the same reference distribution. This suggests that metallicity plays a minor role in the origin of different CCSN types and some other metallicity-insensitive processes, such as binary interaction, dominate the distinction of CCSN types. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2412_02667 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | A statistical study of the metallicity of core-collapse supernovae based on VLT/MUSE integral-field-unit spectroscopy Xi, Qiang Sun, Ning-Chen Zhao, Yi-Han Maund, Justyn R. Niu, Zexi Singleton, Adam J. Liu, Jifeng Astrophysics of Galaxies High Energy Astrophysical Phenomena Solar and Stellar Astrophysics Metallicity plays a crucial role in the evolution of massive stars and their final core-collapse supernova (CCSN) explosions. Integral-field-unit (IFU) spectroscopy can provide a spatially resolved view of SN host galaxies and serve as a powerful tool to study SN metallicities. While early transient surveys targeted on high star formation rate and metallicity galaxies, recent untargeted, wide-field surveys (e.g., ASAS-SN, ZTF) have discovered large numbers of SNe without this bias. In this work, we construct a large sample of SNe discovered by wide-field untargted searches, consisting of 166 SNe of Types II(P), IIn, IIb, Ib and Ic at $z \leq 0.02$ with VLT/MUSE observations. This is currently the largest CCSN sample with IFU observations. With the strong-line method, we reveal the spatially-resolved metallicity maps of the SN host galaxies and acquire accurate metallicity measurements for the SN sites, finding a range from $12 + \log(\text{O/H}) = 8.1$ to 8.7 dex. And the metallicity distributions for different SN types are very close to each other, with mean and median values of 8.4--8.5 dex. Our large sample size narrows the 1$σ$ uncertainty down to only 0.05 dex. The apparent metallicity differences among SN types are all within $\sim$1$σ$ uncertainties and the metallicity distributions for different SN types are all consistent with being randomly drawn from the same reference distribution. This suggests that metallicity plays a minor role in the origin of different CCSN types and some other metallicity-insensitive processes, such as binary interaction, dominate the distinction of CCSN types. |
| title | A statistical study of the metallicity of core-collapse supernovae based on VLT/MUSE integral-field-unit spectroscopy |
| topic | Astrophysics of Galaxies High Energy Astrophysical Phenomena Solar and Stellar Astrophysics |
| url | https://arxiv.org/abs/2412.02667 |