2015AJ....150...46F

Query : 2015AJ....150...46F

2015AJ....150...46F - Astron. J., 150, 46 (2015/August-0)

Three candidate clusters around high redshift radio-loud sources: MG1 J04426+0202, 3C 068.2, and MS 1426.9+1052.

FRANCK J.R., McGAUGH S.S. and SCHOMBERT J.M.

Abstract (from CDS):

We present near-infrared observations of the environments around three radio-loud sources (MG1 J0442+0202, 3C 068.2, and MS 1426.9+1052) at redshifts z = 1.10, 1.57, and 1.83 (respectively) that are surrounded by near-infrared galaxy overdensities. Overdensities with respect to field counts were found to be significant up to 19σ, with 12 times the expected number of galaxies within the inner regions of the densest proto-cluster. Color-magnitude relations are constructed in Ks, J - Ks, with each candidate cluster exhibiting a feature consistent with the beginnings of a red sequence (RS). Galaxy models based on the redshift of the radio source are used to compare expected CMRs for a given formation epoch with the observed RS of each candidate, and are found to be consistent with an old (zf > 5) formation epoch for a few bright, red galaxies on the RS.

Abstract Copyright: ∼

Journal keyword(s): galaxies: clusters: general - galaxies: clusters: individual: (CL J0442+0202, 3C 068.2, MS 1426.9+1052)

Nomenclature: Table 3: [FMS2015] CL J0442 NN (Nos 1-48). Table 4: [FMS2015] 3C 068.2 NN (Nos 1-31). Table 5: [FMS2015] MS 1426 NN (Nos 1-33).

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

Simbad objects: 7

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Number of rows : 7
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 ACT-CL J0102-4915 ClG 01 02 52.50 -49 14 58.0           ~ 296 0
2 ClG 0231+3121 C?G 02 34 00.0 +31 34 00           ~ 1 0
3 3C 68.2 rG 02 34 23.855 +31 34 17.48   24       ~ 139 1
4 BWE 0439+0156 Sy1 04 42 23.697 +02 02 20.74       21.100   ~ 8 1
5 ClG J0442+0202 ClG 04 42 23.70 +02 02 20.0           ~ 10 0
6 ClG 1426.9+1052 C?G 14 29 20.0 +10 38 40           ~ 1 0
7 [VV96] J142924.1+103915 QSO 14 29 20.0479402176 +10 38 42.541545804   20.37 20.11     ~ 5 0

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