2001AJ....122..591R

Query : 2001AJ....122..591R

2001AJ....122..591R - Astron. J., 122, 591-597 (2001/August-0)

The new two-image gravitational lens system CLASS B2319+051.

RUSIN D., MARLOW D.R., NORBURY M., BROWNE I.W.A., JACKSON N., WILKINSON P.N., FASSNACHT C.D., MYERS S.T., KOOPMANS L.V.E., BLANDFORD R.D., PEARSON T.J., READHEAD A.C.S. and DE BRUYN A.G.

Abstract (from CDS):

We report the discovery of a new two-image gravitational lens system, CLASS B2319+051, from the Cosmic Lens All-Sky Survey. Radio imaging with the Very Large Array (VLA) and Multielement Radio-linked Interferometer Network (MERLIN) shows two compact components with a flux density ratio of ≃5:1, separated by 1".36. Observations with the Very Long Baseline Array (VLBA) resolve each of the radio components into a pair of parity-reversed subcomponents. Hubble Space Telescope observations with the Near-Infrared Camera and Multi-Object Spectrometer (NICMOS) show a bright elliptical galaxy (G1) coincident with the radio position, and a second irregular galaxy (G2) 3".4 to the northwest. Previous spectroscopic studies have indicated that these galaxies are at different redshifts (zG1=0.624, zG2=0.588). Infrared counterparts to the lensed radio components are not detected in the NICMOS image, and the source redshift has not yet been determined. Preliminary mass modeling based on the VLBA subcomponent data indicates that the lensing potential includes a strong external shear contribution. A VLA monitoring program is currently being undertaken to measure the differential time delay.

Abstract Copyright: ∼

Journal keyword(s): Cosmology: Gravitational Lensing

Nomenclature: Table 1: [RMN2001] CLASS B2319+051 A (Nos A-B). Table 2, Fig.5: [RMN2001] CLASS B2319+051 AN (Nos A1-A3, B1-B2). Table 3, Fig.6: [RMN2001] CLASS B2319+051 GNa (Nos G1-G2, G2a-G2b).

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 CLASS B0128+437 Rad 01 31 +44.0           ~ 60 0
2 QSO B0712+472 QSO 07 16 03.64335360 +47 08 50.2272600     23.0     ~ 116 2
3 CLASS B0739+366 LeQ 07 42 51 +36 34.7           ~ 18 0
4 NVSS J113000+381203 Rad 11 30 00.110 +38 12 03.23           ~ 31 0
5 [VV2000] J115518.3+193942 QSO 11 55 18.2955044232 +19 39 42.228456840   17.15 16.89     ~ 100 2
6 [RNB2002] G G 11 55 18.33 +19 39 41.4           ~ 23 1
7 3C 286 Sy1 13 31 08.2883506368 +30 30 32.960091564   17.51 17.25     ~ 4558 2
8 QSO B1359+154 QSO 14 01 35.588 +15 13 24.15     21.90     ~ 73 1
9 CLASS B1555+375 LeQ 15 57 11.884 +37 21 35.80           ~ 45 0
10 QSO B1600+4344 QSO 16 01 40.4818 +43 16 47.394   22.12 21.92     ~ 188 1
11 NVSS J160914+653229 rG 16 09 13.93704 +65 32 27.9024     19.4     ~ 215 0
12 CLASS B1933+503 Rad 19 34 31.02 +50 25 23.5           ~ 85 1
13 [VV2000] J204719.3+264340 QSO 20 47 20.3 +26 44 03     20.60     ~ 112 2
14 QSO J2320+0513 QSO 23 20 44.85659166 +05 13 49.9526016   18.6 19.0     ~ 166 1
15 [RMN2001] CLASS B2319+051 A2 LeI 23 21 40.8001 +05 27 37.222           ~ 1 0
16 FIRST J232140.7+052737 Rad 23 21 40.801 +05 27 37.23           ~ 29 1
17 [RMN2001] CLASS B2319+051 A LeI 23 21 40.801 +05 27 37.23           ~ 2 0
18 [RMN2001] CLASS B2319+051 A3 LeI 23 21 40.8013 +05 27 37.223           ~ 1 0
19 [RMN2001] CLASS B2319+051 A1 LeI 23 21 40.8015 +05 27 37.225           ~ 1 0
20 [RMN2001] CLASS B2319+051 B LeI 23 21 40.802 +05 27 35.87           ~ 2 0
21 [RMN2001] CLASS B2319+051 B1 LeI 23 21 40.802 +05 27 35.87           ~ 1 0
22 [RMN2001] CLASS B2319+051 B2 LeI 23 21 40.803 +05 27 35.87           ~ 1 0
23 [RMN2001] CLASS B2319+051 G2b PoG 23 21 40.808 +05 27 38.34           ~ 2 0
24 [RMN2001] CLASS B2319+051 G2 G 23 21 40.809 +05 27 38.60           ~ 3 1
25 [RMN2001] CLASS B2319+051 G2a PoG 23 21 40.810 +05 27 38.99           ~ 2 0
26 [RMN2001] CLASS B2319+051 G1 G 23 21 40.817 +05 27 36.57           ~ 5 1
27 QSO B2320+079 Bla 23 22 36.08945020 +08 12 01.5936505   17.6   18.2   ~ 85 1
28 6C 235239+493337 BLL 23 55 09.45814429 +49 50 08.3394994   21.101   18.400   ~ 284 1

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