COSMOGRAIL: the COSmological MOnitoring of GRAvItational Lenses - X. Modeling based on high-precision astrometry of a sample of 25 lensed quasars: consequences for ellipticity, shear, and astrometric anomalies

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Volume 538 (February 2012)

A&A, 538 (2012) A99

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Table 4

Relative positions, maximum total error (“MTE”), magnitudes and flux ratios of the lensed images and lensing galaxy.

Object	Label	ΔRA (′′)	ΔDec (′′)	MTE (mas)	Magnitude	Flux ratio

(a) JVAS B0218+357^†	A	0.	0.	0.27	17.46 ± 0.01	1.
	B	0.3073 ± 0.0004	0.1273 ± 0.0004	0.27	16.88 ± 0.02	1.707 ± 0.030
	G	0.1980 ± 0.0081	0.0941 ± 0.0094	0.27	17.97 ± 0.06	/

(b) SBS 0909+532	A	0.	0.	0.90	14.53 ± 0.01	1.
	B	0.9868 ± 0.0004	–0.4973 ± 0.0008	0.90	14.67 ± 0.01	0.885 ± 0.014
	G	0.4640 ± 0.0023	–0.0550 ± 0.0037	0.90	19.44 ± 0.1	/

(c) RX J0911.4+0551	A₁	0.	0.	2.51	17.52 ± 0.01	1.
	A₂	0.2611 ± 0.0009	0.4069 ± 0.0010	2.51	17.58 ± 0.01	0.950 ± 0.008
	A₃	–0.0158 ± 0.0009	0.9575 ± 0.0008	2.51	18.27 ± 0.01	0.513 ± 0.005
	B	–2.9681 ± 0.0013	0.7924 ± 0.0006	2.51	18.60 ± 0.02	0.372 ± 0.004
	G	–0.7019 ± 0.0019	0.5020 ± 0.0039	2.51	18.25 ± 0.06	/
	G₂^††	–1.4601 ± 0.0360	1.1678 ± 0.0470	2.51	/	/

(d) FBQS J0951+2635	A	0.	0.	0.90	15.56 ± 0.01	1.
	B	0.8983 ± 0.0011	–0.6336 ± 0.0013	0.90	16.93 ± 0.02	0.283 ± 0.005
	G	0.7521 ± 0.0017	–0.4603 ± 0.0039	0.90	17.36 ± 0.01	/

(e) HE 1104-1805	A	0.	0.	2.61	15.58 ± 0.01	1.
	B	2.9020 ± 0.0008	–1.3362 ± 0.0028	2.61	17.05 ± 0.02	0.259 ± 0.005
	G	0.9731 ± 0.0022	–0.5120 ± 0.0012	2.61	17.79 ± 0.03	/

(f) PG 1115+080	C	0.	0.	1.98	17.13 ± 0.01	0.255 ± 0.008
	A₁	1.3286 ± 0.0002	–2.0338 ± 0.0015	1.98	15.64 ± 0.02	1.
	A₂	1.4772 ± 0.0024	–1.5757 ± 0.0009	1.98	16.10 ± 0.01	0.656 ± 0.013
	B	–0.3405 ± 0.0005	–1.9598 ± 0.0010	1.98	17.60 ± 0.01	0.164 ± 0.003
	G	0.3813 ± 0.0041	–1.3442 ± 0.0040	1.98	16.97 ± 0.01	/

(g) JVAS B1422+231	A	0.3860 ± 0.0004	0.3169 ± 0.0003	1.05	14.35 ± 0.01	1.
	B	0.	0.	1.05	14.23 ± 0.01	1.116 ± 0.003
	C	–0.3360 ± 0.0003	–0.7516 ± 0.0005	1.05	14.92 ± 0.01	0.590 ± 0.002
	D	0.9470 ± 0.0006	–0.8012 ± 0.0005	1.05	18.11 ± 0.02	0.032 ± 0.001
	G	0.7321 ± 0.0037	–0.6390 ± 0.0054	1.05	18.16 ± 0.05	/

(h) SBS 1520+530	A	0.	0.	1.28	17.21 ± 0.01	1.
	B	1.4274 ± 0.0006	–0.6525 ± 0.0004	1.28	18.03 ± 0.01	0.471 ± 0.002
	G	1.1395 ± 0.0016	–0.3834 ± 0.0017	1.28	18.22 ± 0.02	/

(i) CLASS B1600+434	A	0.	0.	1.14	19.98 ± 0.03	1.
	B	0.7300 ± 0.0024	–1.1891 ± 0.0006	1.14	20.22 ± 0.07	0.897 ± 0.056
	G	0.6044 ± 0.0040	–0.8444 ± 0.0041	1.14	19.48 ± 0.14	/

(j) CLASS B1608+656	A	0.	0.	1.71	18.37 ± 0.07	1.086 ± 0.056
	B	0.7464 ± 0.0026	–1.9578 ± 0.0026	1.71	18.66 ± 0.09	1.
	C	0.7483 ± 0.0038	–0.4465 ± 0.0033	1.71	18.90 ± 0.07	0.855 ± 0.021
	D	–1.1181 ± 0.0025	–1.2527 ± 0.0018	1.71	19.50 ± 0.04	0.418 ± 0.024
	G₁	–0.4561 ± 0.0061	–1.0647 ± 0.0037	1.71	16.85 ± 0.01	/
	G₂	0.2821 ± 0.0015	–0.9359 ± 0.0023	1.71	17.29 ± 0.01	/

(k) HE 2149-2745	A	0.	0.	1.39	15.62 ± 0.01	1.
	B	0.8901 ± 0.0007	1.4461 ± 0.0003	1.39	17.19 ± 0.01	0.234 ± 0.001
	G	0.7198 ± 0.0036	1.1498 ± 0.0051	1.39	17.69 ± 0.01	/

Notes. See Fig. 1 for the labels. Magnitudes are measured within 1 R_eff for the galaxy and are PSF magnitudes for the point-like sources.

^†

Possibly large systematic errors (see Sect. 3.2);

^††

position measured based on Gaussian fitting.

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