The RAdio Galaxy Environment Reference Survey (RAGERS): Evidence of an anisotropic distribution of submillimeter galaxies in the 4C 23.56 protocluster at z=2.48
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| Main Authors: | , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , |
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| Format: | Preprint |
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2024
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| _version_ | 1866913458509840384 |
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| author | Zhou, Dazhi Greve, Thomas R. Gullberg, Bitten Lee, Minju M. Di Mascolo, Luca Dicker, Simon R. Romero, Charles E. Chapman, Scott C. Chen, Chian-Chou Cornish, Thomas Devlin, Mark J. Ho, Luis C. Kohno, Kotaro Lagos, Claudia D. P. Mason, Brian S. Mroczkowski, Tony Wagg, Jeff F. W. Wang, Q. Daniel Wang, Ran Brinch, Malte. Dannerbauer, Helmut Jiang, Xue-Jian Lauritsen, Lynge R. B. Vijayan, Aswin P. Vizgan, David Wardlow, Julie L. Sarazin, Craig L. Sarmiento, Karen P. Serjeant, Stephen Bhandarkar, Tanay A. Haridas, Saianeesh K. Moravec, Emily Orlowski-Scherer, John Sievers, Jonathan L. R. Tanaka, Ichi Wang, Yu-Jan Zeballos, Milagros Laza-Ramos, Andres Liu, Yuanqi Hassan, Mohd Shaiful Rizal Jwel, Abdul Kadir Md Nazri, Affan Adly Lim, Ming-Kang Ibrahim, Ungku Ferwani Salwa Ungku |
| author_facet | Zhou, Dazhi Greve, Thomas R. Gullberg, Bitten Lee, Minju M. Di Mascolo, Luca Dicker, Simon R. Romero, Charles E. Chapman, Scott C. Chen, Chian-Chou Cornish, Thomas Devlin, Mark J. Ho, Luis C. Kohno, Kotaro Lagos, Claudia D. P. Mason, Brian S. Mroczkowski, Tony Wagg, Jeff F. W. Wang, Q. Daniel Wang, Ran Brinch, Malte. Dannerbauer, Helmut Jiang, Xue-Jian Lauritsen, Lynge R. B. Vijayan, Aswin P. Vizgan, David Wardlow, Julie L. Sarazin, Craig L. Sarmiento, Karen P. Serjeant, Stephen Bhandarkar, Tanay A. Haridas, Saianeesh K. Moravec, Emily Orlowski-Scherer, John Sievers, Jonathan L. R. Tanaka, Ichi Wang, Yu-Jan Zeballos, Milagros Laza-Ramos, Andres Liu, Yuanqi Hassan, Mohd Shaiful Rizal Jwel, Abdul Kadir Md Nazri, Affan Adly Lim, Ming-Kang Ibrahim, Ungku Ferwani Salwa Ungku |
| contents | High-redshift radio(-loud) galaxies (H$z$RGs) are massive galaxies with powerful radio-loud active galactic nuclei (AGNs) and serve as beacons for protocluster identification. However, the interplay between H$z$RGs and the large-scale environment remains unclear. To understand the connection between H$z$RGs and the surrounding obscured star formation, we investigated the overdensity and spatial distribution of submillimeter-bright galaxies (SMGs) in the field of 4C\,23.56, a well-known H$z$RG at $z=2.48$. We used SCUBA-2 data ($σ\,{\sim}\,0.6$\,mJy) to estimate the $850\,{\rm μm}$ source number counts and examine the radial and azimuthal overdensities of the $850\,{\rm μm}$ sources in the vicinity of the H$z$RG. The angular distribution of SMGs is inhomogeneous around the H$z$RG 4C\,23.56, with fewer sources oriented along the radio jet. We also find a significant overdensity of bright SMGs (${\rm S}_{850\rm\,μm}\geq5\,$mJy). Faint and bright SMGs exhibit different spatial distributions. The former are concentrated in the core region, while the latter prefer the outskirts of the H$z$RG field. High-resolution observations show that the seven brightest SMGs in our sample are intrinsically bright, suggesting that the overdensity of bright SMGs is less likely due to the source multiplicity. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2408_02177 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | The RAdio Galaxy Environment Reference Survey (RAGERS): Evidence of an anisotropic distribution of submillimeter galaxies in the 4C 23.56 protocluster at z=2.48 Zhou, Dazhi Greve, Thomas R. Gullberg, Bitten Lee, Minju M. Di Mascolo, Luca Dicker, Simon R. Romero, Charles E. Chapman, Scott C. Chen, Chian-Chou Cornish, Thomas Devlin, Mark J. Ho, Luis C. Kohno, Kotaro Lagos, Claudia D. P. Mason, Brian S. Mroczkowski, Tony Wagg, Jeff F. W. Wang, Q. Daniel Wang, Ran Brinch, Malte. Dannerbauer, Helmut Jiang, Xue-Jian Lauritsen, Lynge R. B. Vijayan, Aswin P. Vizgan, David Wardlow, Julie L. Sarazin, Craig L. Sarmiento, Karen P. Serjeant, Stephen Bhandarkar, Tanay A. Haridas, Saianeesh K. Moravec, Emily Orlowski-Scherer, John Sievers, Jonathan L. R. Tanaka, Ichi Wang, Yu-Jan Zeballos, Milagros Laza-Ramos, Andres Liu, Yuanqi Hassan, Mohd Shaiful Rizal Jwel, Abdul Kadir Md Nazri, Affan Adly Lim, Ming-Kang Ibrahim, Ungku Ferwani Salwa Ungku Astrophysics of Galaxies High-redshift radio(-loud) galaxies (H$z$RGs) are massive galaxies with powerful radio-loud active galactic nuclei (AGNs) and serve as beacons for protocluster identification. However, the interplay between H$z$RGs and the large-scale environment remains unclear. To understand the connection between H$z$RGs and the surrounding obscured star formation, we investigated the overdensity and spatial distribution of submillimeter-bright galaxies (SMGs) in the field of 4C\,23.56, a well-known H$z$RG at $z=2.48$. We used SCUBA-2 data ($σ\,{\sim}\,0.6$\,mJy) to estimate the $850\,{\rm μm}$ source number counts and examine the radial and azimuthal overdensities of the $850\,{\rm μm}$ sources in the vicinity of the H$z$RG. The angular distribution of SMGs is inhomogeneous around the H$z$RG 4C\,23.56, with fewer sources oriented along the radio jet. We also find a significant overdensity of bright SMGs (${\rm S}_{850\rm\,μm}\geq5\,$mJy). Faint and bright SMGs exhibit different spatial distributions. The former are concentrated in the core region, while the latter prefer the outskirts of the H$z$RG field. High-resolution observations show that the seven brightest SMGs in our sample are intrinsically bright, suggesting that the overdensity of bright SMGs is less likely due to the source multiplicity. |
| title | The RAdio Galaxy Environment Reference Survey (RAGERS): Evidence of an anisotropic distribution of submillimeter galaxies in the 4C 23.56 protocluster at z=2.48 |
| topic | Astrophysics of Galaxies |
| url | https://arxiv.org/abs/2408.02177 |