Zhou, D. and Greve, T. R. and Gullberg, B. and Lee, M. M. and Di Mascolo, L. and Dicker, S. R. and Romero, C. E. and Chapman, S. C. and Chen, C. -c. and Cornish, T. and Devlin, M. J. and Ho, L. C. and Kohno, K. and Lagos, C. D. P. and Mason, B. S. and Mroczkowski, T. and Wagg, J. F. W. and Wang, Q. D. and Wang, R. and Brinch, M. and Dannerbauer, H. and Jiang, X. -j. and Lauritsen, L. R. B. and Vijayan, A. P. and Vizgan, D. and Wardlow, J. L. and Sarazin, C. L. and Sarmiento, K. P. and Serjeant, S. and Bhandarkar, T. A. and Haridas, S. K. and Moravec, E. and Orlowski-Scherer, J. and Sievers, J. L. R. and Tanaka, I. and Wang, Y. -j. and Zeballos, M. and Laza-Ramos, A. and Liu, Y. and Hassan, M. S. R. and Jwel, A. K. M. and Nazri, A. A. and Lim, M. K. and Ibrahim, U. F. S. U. (2024) 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. Astronomy & Astrophysics, 690. A196. ISSN 0004-6361, DOI https://doi.org/10.1051/0004-6361/202348500.
Full text not available from this repository.Abstract
Context. High-redshift radio(-loud) galaxies (HzRGs) are massive galaxies with powerful radio-loud active galactic nuclei (AGNs) and serve as beacons for protocluster identification. However, the interplay between HzRGs and the large-scale environment remains unclear. Aims. To understand the connection between HzRGs 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 HzRG at z = 2.48. Methods. We used SCUBA-2 data (sigma similar to 0.6 mJy) to estimate the 850 mu m source number counts and examine the radial and azimuthal overdensities of the 850 mu m sources in the vicinity of the HzRG. Results. The angular distribution of SMGs is inhomogeneous around the HzRG 4C 23.56, with fewer sources oriented along the radio jet. We also find a significant overdensity of bright SMGs (S-850 mu m >= 5 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 HzRG 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.
| Item Type: | Article |
|---|---|
| Funders: | UNSPECIFIED |
| Uncontrolled Keywords: | galaxies: clusters: general; cosmology: observations; submillimeter: galaxies |
| Subjects: | Q Science > Q Science (General) Q Science > QC Physics |
| Divisions: | Faculty of Science > Department of Physics |
| Depositing User: | Ms. Juhaida Abd Rahim |
| Date Deposited: | 17 Feb 2025 01:52 |
| Last Modified: | 17 Feb 2025 01:52 |
| URI: | http://eprints.um.edu.my/id/eprint/47425 |
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