2008MNRAS.385.2254A

Query : 2008MNRAS.385.2254A

2008MNRAS.385.2254A - Mon. Not. R. Astron. Soc., 385, 2254-2260 (2008/April-3)

Triplets of quasars at high redshift - I. Photometric data.

ALONSO M.V., COLDWELL G.V., SOCHTING I., BORNANCINI C., SMITH M.G., LAMBAS D.G. and REST A.

Abstract (from CDS):

We have conducted an optical and infrared imaging in the neighbourhoods of four triplets of quasars. R,z',J and Ksimages were obtained with MOSAIC II and ISPI at Cerro Tololo Inter-American Observatory. Accurate relative photometry and astrometry were obtained from these images for subsequent use in deriving photometric redshifts. We analysed the homogeneity and depth of the photometric catalogue by comparing with results coming from the literature. The good agreement shows that our magnitudes are reliable to study large-scale structure reaching limiting magnitudes of R = 24.5,z' = 22.5,J = 20.5 and Ks= 19.0. With this catalogue we can study the neighbourhoods of the triplets of quasars searching for galaxy overdensities such as groups and galaxy clusters.

Abstract Copyright: ©2008 The Authors. Journal compilation © 2008 RAS

Journal keyword(s): galaxies: photometry - quasars: general

Simbad objects: 12

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Number of rows : 12
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 [VV2006] J015646.6-282800 QSO 01 56 46.5827109960 -28 28 00.068262132   19.55       ~ 6 0
2 QSO J0156-2831 QSO 01 56 48.0097 -28 31 43.263   19.63       ~ 9 0
3 [VV2006] J015656.0-282335 QSO 01 56 56.0833463040 -28 23 35.566269432   19.76       ~ 6 0
4 [VV2006] J100219.5+015537 QSO 10 02 19.4932576296 +01 55 37.011633780   21.160 21.027   20.410 ~ 59 0
5 [VV2006] J100234.3+015010 QSO 10 02 34.3314019656 +01 50 11.185841868   19.40 19.13   18.820 ~ 59 0
6 [VV2006] J100236.7+015948 QSO 10 02 36.7048938912 +01 59 48.614675208   20.0784 19.8376   19.883 ~ 60 0
7 [VV2006] J120914.9+003551 QSO 12 09 14.9548003104 +00 35 51.875219832     19.13     ~ 6 0
8 [VV2006] J120919.6+002926 QSO 12 09 19.6288801992 +00 29 26.493867492     20.64     ~ 9 0
9 [VV2006] J120922.4+002646 QSO 12 09 22.3927729440 +00 26 45.878735688     20.67     ~ 8 0
10 [VV2006] J235405.3-284506 QSO 23 54 05.3503176192 -28 45 06.192335700     20.21     ~ 5 0
11 [VV2006] J235414.2-284810 QSO 23 54 14.2586909880 -28 48 10.215470016     19.63     ~ 5 0
12 [VV2006] J235430.2-284841 QSO 23 54 30.1692367488 -28 48 41.323418064     20.85     ~ 5 0

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