2006MNRAS.368..341W

Query : 2006MNRAS.368..341W

2006MNRAS.368..341W - Mon. Not. R. Astron. Soc., 368, 341-350 (2006/May-1)

Multi-object spectroscopy of the field surrounding PKS 2126-158: discovery of a z= 0.66 galaxy group.

WHITING M.T., WEBSTER R.L. and FRANCIS P.J.

Abstract (from CDS):

The high-redshift radio-loud quasar PKS 2126-158 is found to have a large number of red galaxies in close apparent proximity. We use the Gemini Multi-Object Spectrograph (GMOS) on Gemini South to obtain optical spectra for a large fraction of these sources. We show that there is a group of galaxies at z∼ 0.66, coincident with a metal-line absorption system seen in the quasar's optical spectrum. The multiplexing capabilities of GMOS also allow us to measure redshifts of many foreground galaxies in the field surrounding the quasar.

The galaxy group has five confirmed members, and a further four fainter galaxies are possibly associated. All confirmed members exhibit early-type galaxy spectra, a rare situation for a Mgii absorbing system. We discuss the relationship of this group to the absorbing gas, and the possibility of gravitational lensing of the quasar due to the intervening galaxies.


Abstract Copyright: 2006 The Authors. Journal compilation © 2006 RAS

Journal keyword(s): gravitational lensing - galaxies: general - quasars: absorption lines - quasars: individual: PKS 2126-158

Nomenclature: Fig.1, Table 2: [WWF2006] NN (Nos 1-35). Fig.7: [WWF2006] AN (Nos C1-C2, X1-X3).

CDS comments: Fig.7: The objects C1 and C2 were already seen in 1990A&AS...86..543V and 1990ApJ...351..364S.

Simbad objects: 28

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Number of rows : 28
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 V* T Phe Mi* 00 30 26.2337742744 -46 24 33.379722396   12.46 11.43 12.43   M7e 76 0
2 SA 95- reg 03 53 21.0 -00 01 10           ~ 85 0
3 LAWD 74 WD* 19 20 34.9229289504 -07 40 00.065957592 11.553 12.345 12.290 12.229 12.164 DBQA5 250 0
4 [WWF2006] 03 G 21 29 03.36965 -15 39 40.7413           ~ 1 0
5 [WWF2006] 01 G 21 29 05.03120 -15 40 14.8413           ~ 1 0
6 [WWF2006] 04 G 21 29 06.12506 -15 40 00.2413           ~ 1 0
7 [WWF2006] 09 G 21 29 07.23969 -15 39 02.3413           ~ 1 0
8 [WWF2006] 07 G 21 29 08.17432 -15 39 34.7413           ~ 1 0
9 [WWF2006] 12 G 21 29 09.11586 -15 38 51.3413           ~ 1 0
10 [WWF2006] 08 G 21 29 09.64895 -15 39 40.1413           ~ 1 0
11 [WWF2006] 06 G 21 29 09.71818 -15 40 07.9413           ~ 1 0
12 [WWF2006] 14 G 21 29 11.17204 -15 39 00.4413           ~ 1 0
13 [WWF2006] 28 G 21 29 11.2573480992 -15 37 02.811693540           ~ 1 0
14 [WWF2006] 13 G 21 29 11.60128 -15 39 07.2413           ~ 1 0
15 [WWF2006] 26 G 21 29 11.66358 -15 37 22.3413           ~ 1 0
16 [WWF2006] 27 G 21 29 11.84359 -15 37 18.2413           ~ 1 0
17 [WWF2006] 29 G 21 29 12.14821 -15 37 03.0413           ~ 1 0
18 QSO B2126-15 Bla 21 29 12.17589329 -15 38 41.0419083   17.61 17.3 17.3   ~ 521 1
19 [WWF2006] 16 G 21 29 12.32821 -15 38 53.7413           ~ 1 0
20 [WWF2006] 17 G 21 29 12.61206 -15 38 44.7413           ~ 1 0
21 [WWF2006] 18 G 21 29 12.74360 -15 38 44.2413           ~ 1 0
22 [WWF2006] 20 G 21 29 12.88206 -15 38 36.4413           ~ 1 0
23 [WWF2006] 19 G 21 29 13.04822 -15 38 43.4413           ~ 1 0
24 [WWF2006] 33 G 21 29 13.51207 -15 36 20.4413           ~ 1 0
25 [WWF2006] 32 G 21 29 13.86515 -15 36 46.2413           ~ 1 0
26 [WWF2006] 35 G 21 29 15.09055 -15 36 24.3413           ~ 1 0
27 [WWF2006] 24 G 21 29 15.45747 -15 38 22.7413           ~ 1 0
28 [WWF2006] 30 G 21 29 18.55212 -15 37 52.9413           ~ 1 0

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