TY - JOUR
T1 - The Radio Galaxy Environment Reference Survey (RAGERS)
T2 - a submillimetre study of the environments of massive radio-quiet galaxies at z = 1–3
AU - Cornish, Thomas M.
AU - Wardlow, Julie L.
AU - Greve, Thomas
AU - Chapman, Scott
AU - Chen, Chian-Chou
AU - Dannerbauer, Helmut
AU - Goto, Tomotsu
AU - Gullberg, Bitten
AU - Ho, Luis C.
AU - Jiang, Xue-Jian
AU - Lagos, Claudia
AU - Lee, Minju
AU - Serjeant, Stephen
AU - Shim, Hyunjin
AU - Smith, Daniel J. B.
AU - Vijayan, Aswin
AU - Wagg, Jeff
AU - Zhou, Dazhi
N1 - © 2024 The Author(s). Published by Oxford University Press on behalf of Royal Astronomical Society. This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY), https://creativecommons.org/licenses/by/4.0/
PY - 2024/9/1
Y1 - 2024/9/1
N2 - Measuring the environments of massive galaxies at high redshift is crucial to understanding galaxy evolution and the conditions that gave rise to the distribution of matter we see in the Universe today. While high-z radio galaxies (HzRGs) and quasars tend to reside in protocluster-like systems, the environments of their radio-quiet counterparts are relatively unexplored, particularly in the submillimetre, which traces dust-obscured star formation. In this study, we search for 850 μm-selected submillimetre galaxies (SMGs) in the environments of massive (), radio-quiet (WHz) galaxies at using data from the SCUBA-2 COSMOS (S2COSMOS) survey. By constructing number counts in circular regions of radius 1-6 arcmin and comparing with blank-field measurements, we find no significant overdensities of SMGs around massive radio-quiet galaxies at any of these scales, despite being sensitive down to overdensities of. To probe deeper than the catalogue we also examine the distribution of peaks in the SCUBA-2 signal-to-noise (SNR) map, which reveals only tentative signs of any difference in the SMG densities of the radio-quiet galaxy environments compared to the blank field, and only on smaller scales (1 arcmin radii, corresponding to Mpc) and higher SNR thresholds. We conclude that massive, radio-quiet galaxies at cosmic noon are typically in environments with, which are either consistent with the blank field or contain only weak overdensities spanning sub-Mpc scales. The contrast between our results and studies of HzRGs with similar stellar masses and redshifts implies an intrinsic link between the wide-field environment and the radio luminosity of the active galactic nucleus at high redshift.
AB - Measuring the environments of massive galaxies at high redshift is crucial to understanding galaxy evolution and the conditions that gave rise to the distribution of matter we see in the Universe today. While high-z radio galaxies (HzRGs) and quasars tend to reside in protocluster-like systems, the environments of their radio-quiet counterparts are relatively unexplored, particularly in the submillimetre, which traces dust-obscured star formation. In this study, we search for 850 μm-selected submillimetre galaxies (SMGs) in the environments of massive (), radio-quiet (WHz) galaxies at using data from the SCUBA-2 COSMOS (S2COSMOS) survey. By constructing number counts in circular regions of radius 1-6 arcmin and comparing with blank-field measurements, we find no significant overdensities of SMGs around massive radio-quiet galaxies at any of these scales, despite being sensitive down to overdensities of. To probe deeper than the catalogue we also examine the distribution of peaks in the SCUBA-2 signal-to-noise (SNR) map, which reveals only tentative signs of any difference in the SMG densities of the radio-quiet galaxy environments compared to the blank field, and only on smaller scales (1 arcmin radii, corresponding to Mpc) and higher SNR thresholds. We conclude that massive, radio-quiet galaxies at cosmic noon are typically in environments with, which are either consistent with the blank field or contain only weak overdensities spanning sub-Mpc scales. The contrast between our results and studies of HzRGs with similar stellar masses and redshifts implies an intrinsic link between the wide-field environment and the radio luminosity of the active galactic nucleus at high redshift.
KW - astro-ph.GA
KW - astro-ph.CO
KW - galaxies: evolution
KW - galaxies: photometry
KW - submillimetre: galaxies
UR - http://www.scopus.com/inward/record.url?scp=85201688322&partnerID=8YFLogxK
U2 - 10.1093/mnras/stae1861
DO - 10.1093/mnras/stae1861
M3 - Article
SN - 0035-8711
VL - 533
SP - 1032
EP - 1044
JO - Monthly Notices of the Royal Astronomical Society
JF - Monthly Notices of the Royal Astronomical Society
IS - 1
M1 - stae1861
ER -