2003A&A...406L..43S

Query : 2003A&A...406L..43S

2003A&A...406L..43S - Astronomy and Astrophysics, volume 406L43-46 (2003/8-1)

A quadruply imaged quasar with an optical Einstein ring candidate: 1RXS J113155.4-123155.

SLUSE D., SURDEJ J., CLAESKENS J.-F., HUTSEMEKERS D., JEAN C., COURBIN F., NAKOS T., BILLERES M. and KHMIL S.V.

Abstract (from CDS):

We report the discovery of a new quadruply imaged quasar surrounded by an optical Einstein ring candidate. Spectra of the different components of 1RXS J113155.4-123155 reveal a source at z=0.658. Up to now, this object is the closest known gravitationally lensed quasar. The lensing galaxy is clearly detected. Its redshift is measured to be z=0.295. Additionally, the total V magnitude of the system has varied by 0.3 mag between two epochs separated by 33 weeks. The measured relative astrometry of the lensed images is best fitted with an SIS model plus shear. This modeling suggests very high magnification of the source (up to 50 for the total magnification) and predicts flux ratios between the lensed images significantly different from what is actually observed. This suggests that the lensed images may be affected by a combination of micro or milli-lensing and dust extinction effects.

Abstract Copyright: ∼

Journal keyword(s): gravitational lens - quasar - cosmology

Nomenclature: Text: [SSC2003] J1131GL N=1. Table 1: [SSC2003] A (Nos A-D, G).

Simbad objects: 11

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Number of rows : 11
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 LP 995-86 Pe* 03 48 22.6125679056 -39 08 37.013680104   13.61 13.15     F 104 0
2 L 595-22 Pe* 05 56 24.7419040752 -27 51 32.361761700   12.31 12.38     sdG 171 0
3 HD 298383 * 09 22 29.7726126312 -52 28 57.297210744   10.34 9.75     A0Ib 35 0
4 [SSC2003] D LeQ 11 31 51.32 -12 31 57.8           ~ 41 0
5 [SSC2003] J1131GL gLS 11 31 51.40 -12 31 58.1           ~ 10 0
6 [SSC2003] C LeQ 11 31 51.50 -12 31 59.8           ~ 43 0
7 [SSC2003] G G 11 31 51.51 -12 31 58.4           ~ 38 1
8 2MASS J11315154-1231588 Sy1 11 31 51.5387 -12 31 58.716           ~ 304 1
9 [SSC2003] A LeQ 11 31 51.54 -12 31 58.7           ~ 44 0
10 [SSC2003] B LeQ 11 31 51.54 -12 31 57.5           ~ 42 0
11 HD 155197 * 17 10 15.7466372208 -04 50 03.657092136   10.16 9.56     F0V 53 0

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