2024A&A...690A.196Z

Query : 2024A&A...690A.196Z

2024A&A...690A.196Z - Astronomy and Astrophysics, volume 690A196 (2024/10-1)

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 D., GREVE T.R., GULLBERG B., LEE M.M., DI MASCOLO L., DICKER S.R., ROMERO C.E., CHAPMAN S.C., CHEN C.-C., CORNISH T., DEVLIN M.J., HO L.C., KOHNO K., LAGOS C.D.P., MASON B.S., MROCZKOWSKI T., WAGG J.F.W., WANG Q.D., WANG R., BRINCH M., DANNERBAUER H., JIANG X.-J., LAURITSEN L.R.B., VIJAYAN A.P., VIZGAN D., WARDLOW J.L., SARAZIN C.L., SARMIENTO K.P., SERJEANT S., BHANDARKAR T.A., HARIDAS S.K., MORAVEC E., ORLOWSKI-SCHERER J., SIEVERS J.L.R., TANAKA I., WANG Y.-J., ZEBALLOS M., LAZA-RAMOS A., LIU Y., HASSAN M.S.R., JWEL A.K.M., NAZRI A.A., LIM M.K. and IBRAHIM U.F.S.U.

Abstract (from CDS):

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 (σ ∼ 0.6 mJy) to estimate the 850 μm source number counts and examine the radial and azimuthal overdensities of the 850 μm 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 μm_ ≥ 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.

Abstract Copyright: © The Authors 2024

Journal keyword(s): galaxies: clusters: general - cosmology: observations - submillimeter: galaxies

VizieR on-line data: <Available at CDS (J/A+A/690/A196): tablea1.dat tableb1.dat>

Status at CDS : All or part of tables of objects will not be ingested in SIMBAD.

Simbad objects: 11

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Number of rows : 11
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 NAME Slug Nebula GNe 00 52 02.0 +01 01 29           ~ 34 0
2 NVSS J035747-033407 rG 03 57 47.62 -03 34 05.5           ~ 11 1
3 LEDA 2824392 QSO 05 30 25.51 -54 54 23.2           ~ 50 2
4 NAME Jackpot Nebula EmO 08 41 58.47 +39 21 21.0           ~ 16 0
5 PKS J1140-2628 rG 11 40 48.35884 -26 29 08.6316     22.00     ~ 325 1
6 NAME MAMMOTH-1 EmO 14 41 24.310 +40 03 11.91           ~ 37 0
7 EM* MWC 349A Or* 20 32 45.5291969760 +40 39 36.651807828           ~ 180 0
8 PMN J2051-2702 rG 20 51 03.590 -27 03 02.52           ~ 37 1
9 PMN J2106-2404 rG 21 06 58.463 -24 05 06.11   23.0       ~ 79 2
10 NAME 4C 23.56 Protocluster PCG 21 07 14.82 +23 31 45.0           ~ 11 0
11 4C 23.56 rG 21 07 15.080 +23 31 43.71           ~ 117 1

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