2003MNRAS.341L..55T

Query : 2003MNRAS.341L..55T

2003MNRAS.341L..55T - Mon. Not. R. Astron. Soc., 341, L55-L58 (2003/June-1)

Discovery of an overdensity of faint red galaxies in the vicinity of the z=1.786 radio galaxy 3C294.

TOFT S., PEDERSEN K., EBELING H. and HJORTH J.

Abstract (from CDS):

We report the discovery of an overdensity of faint red galaxies in the vicinity of the z=1.786 radio galaxy 3C294. The overdensity, discovered in a 84-min Ks -band ISAAC/VLT image is significant at the 2.4σ level (compared to the local field density), and overlaps with the extended X-ray emission around 3C294 detected with the Chandra X-ray Observatory. The near-infrared colours of the galaxies making up the overdensity show a large scatter and the galaxies do not follow a red sequence in the colour magnitude diagram. If the galaxies are in a cluster at z=1.786 they must be dominated by young stellar populations with different star-formation histories.

Abstract Copyright: 2003 RAS

Journal keyword(s): galaxies: clusters: individual: 3C294 - galaxies: evolution - galaxies: formation - galaxies: high-redshift - cosmology: observations - X-rays: galaxies: clusters

Nomenclature: Table 1, Fig.1: [TPE2003] XN (Nos X1-X3).

Simbad objects: 4

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Number of rows : 4
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 [TPE2003] X3 X 14 06 39.5 +34 12 30           ~ 1 0
2 [TPE2003] X1 X 14 06 44.0 +34 11 25           ~ 1 0
3 3C 294 rG 14 06 44.317 +34 11 30.19           ~ 234 1
4 CXOMP J140644.8+341135 X 14 06 44.810 +34 11 35.74   22.5       ~ 3 0

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