AGN-Driven Biconical Outflows as the Origin of the Double-Peaked [O~{\sc iii}] doublet in SDSS J134733.36+121724.27
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arXiv
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| Autores principales: | , , , , , , |
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| Formato: | Preprint |
| Publicado: |
2025
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| _version_ | 1866909894091735040 |
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| author | Cheng, PeiZhen Chen, XingQian Liao, GuiLin Zheng, Qi Gu, Ying Chen, MuLin Zhang, XueGuang |
| author_facet | Cheng, PeiZhen Chen, XingQian Liao, GuiLin Zheng, Qi Gu, Ying Chen, MuLin Zhang, XueGuang |
| contents | In this manuscript, we recheck the spectroscopic properties of SDSS J134733.36+121724.27 (4C+12.50), confirming the presence of the double-peaked [O~{\sc iii}]$λ\lambda4959,5007$Å doublet and a broad H$α$. The former likely results from AGN-driven biconical outflows, while the absence of a broad H$β$ supports a classification of the source as a Type-1.9 AGN. We analyze its high-quality Sloan Digital Sky Survey (SDSS) optical spectrum after robustly subtracting host galaxy and AGN continuum contributions through a simple stellar population fitting method employing 39 templates and a power-law continuum. Each narrow line of the [O~{\sc iii}]$λ\lambda4959,5007$Å doublet is better described by two Gaussian components (blue-shifted and red-shifted) than by a single Gaussian, as confirmed by the F-test. Broad components are included for both H$α$ and H$β$, but only H$α$ reveals a significant detection, further supported by a comparison between the SDSS spectrum and that previously reported. These results support that the object is highly consistent with a Type-1.9 AGN classification, and the double-peaked [O~{\sc iii}] profiles are most likely produced by AGN-driven biconical outflows rather than by a rotating narrow-line region or a dual AGN merger system. Additional observations are still needed to strengthen these conclusions. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2511_05930 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | AGN-Driven Biconical Outflows as the Origin of the Double-Peaked [O~{\sc iii}] doublet in SDSS J134733.36+121724.27 Cheng, PeiZhen Chen, XingQian Liao, GuiLin Zheng, Qi Gu, Ying Chen, MuLin Zhang, XueGuang Astrophysics of Galaxies In this manuscript, we recheck the spectroscopic properties of SDSS J134733.36+121724.27 (4C+12.50), confirming the presence of the double-peaked [O~{\sc iii}]$λ\lambda4959,5007$Å doublet and a broad H$α$. The former likely results from AGN-driven biconical outflows, while the absence of a broad H$β$ supports a classification of the source as a Type-1.9 AGN. We analyze its high-quality Sloan Digital Sky Survey (SDSS) optical spectrum after robustly subtracting host galaxy and AGN continuum contributions through a simple stellar population fitting method employing 39 templates and a power-law continuum. Each narrow line of the [O~{\sc iii}]$λ\lambda4959,5007$Å doublet is better described by two Gaussian components (blue-shifted and red-shifted) than by a single Gaussian, as confirmed by the F-test. Broad components are included for both H$α$ and H$β$, but only H$α$ reveals a significant detection, further supported by a comparison between the SDSS spectrum and that previously reported. These results support that the object is highly consistent with a Type-1.9 AGN classification, and the double-peaked [O~{\sc iii}] profiles are most likely produced by AGN-driven biconical outflows rather than by a rotating narrow-line region or a dual AGN merger system. Additional observations are still needed to strengthen these conclusions. |
| title | AGN-Driven Biconical Outflows as the Origin of the Double-Peaked [O~{\sc iii}] doublet in SDSS J134733.36+121724.27 |
| topic | Astrophysics of Galaxies |
| url | https://arxiv.org/abs/2511.05930 |