Discovery of a Unique Close Quasar-DSFG Pair Linked by a [C II] Bridge at $z=5.63$
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| Main Authors: | , , , , , , , , , , , , , |
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| Format: | Preprint |
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2024
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| _version_ | 1866915101845487616 |
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| author | Zhu, Yongda Bakx, Tom J. L. C. Ikeda, Ryota Umehata, Hideki Becker, George D. Cain, Christopher Champagne, Jaclyn B. Fan, Xiaohui Fudamoto, Yoshinobu Jin, Xiangyu Ma, Hai-Xia Sun, Yang Takeuchi, Tsutomu T. Tee, Wei Leong |
| author_facet | Zhu, Yongda Bakx, Tom J. L. C. Ikeda, Ryota Umehata, Hideki Becker, George D. Cain, Christopher Champagne, Jaclyn B. Fan, Xiaohui Fudamoto, Yoshinobu Jin, Xiangyu Ma, Hai-Xia Sun, Yang Takeuchi, Tsutomu T. Tee, Wei Leong |
| contents | We report the discovery of a unique quasar-dusty star-forming galaxy (DSFG) system at $z = 5.63$, consisting of the bright quasar J1133+1603 ($M_{\rm UV} = -27.42$) and its compact, dust-obscured companion, J1133c. ALMA observations reveal a prominent [C II] bridge connecting the quasar and DSFG, indicating ongoing interaction at a projected separation of 1.8 arcsec ($\sim$10 proper kpc). J1133c exhibits unusually bright and broad [C II] emission ($L_{\rm [CII]} > 10^{43}$ erg s$^{-1}$, FWHM $> 500$ km s$^{-1}$), with a [C II] luminosity five times that of the quasar, suggesting intense star formation or potential AGN activity. The inferred star formation rate from [C II] is approximately $10^3$ M$_\odot$ yr$^{-1}$. The remarkable properties of this pair strongly suggest that galaxy interactions may simultaneously trigger both starburst and quasar activity, driving rapid evolution in the early universe. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2411_06698 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Discovery of a Unique Close Quasar-DSFG Pair Linked by a [C II] Bridge at $z=5.63$ Zhu, Yongda Bakx, Tom J. L. C. Ikeda, Ryota Umehata, Hideki Becker, George D. Cain, Christopher Champagne, Jaclyn B. Fan, Xiaohui Fudamoto, Yoshinobu Jin, Xiangyu Ma, Hai-Xia Sun, Yang Takeuchi, Tsutomu T. Tee, Wei Leong Astrophysics of Galaxies Cosmology and Nongalactic Astrophysics We report the discovery of a unique quasar-dusty star-forming galaxy (DSFG) system at $z = 5.63$, consisting of the bright quasar J1133+1603 ($M_{\rm UV} = -27.42$) and its compact, dust-obscured companion, J1133c. ALMA observations reveal a prominent [C II] bridge connecting the quasar and DSFG, indicating ongoing interaction at a projected separation of 1.8 arcsec ($\sim$10 proper kpc). J1133c exhibits unusually bright and broad [C II] emission ($L_{\rm [CII]} > 10^{43}$ erg s$^{-1}$, FWHM $> 500$ km s$^{-1}$), with a [C II] luminosity five times that of the quasar, suggesting intense star formation or potential AGN activity. The inferred star formation rate from [C II] is approximately $10^3$ M$_\odot$ yr$^{-1}$. The remarkable properties of this pair strongly suggest that galaxy interactions may simultaneously trigger both starburst and quasar activity, driving rapid evolution in the early universe. |
| title | Discovery of a Unique Close Quasar-DSFG Pair Linked by a [C II] Bridge at $z=5.63$ |
| topic | Astrophysics of Galaxies Cosmology and Nongalactic Astrophysics |
| url | https://arxiv.org/abs/2411.06698 |