2013ApJ...777...97S

Query : 2013ApJ...777...97S

2013ApJ...777...97S - Astrophys. J., 777, 97 (2013/November-2)

The SL2S galaxy-scale lens sample. III. Lens models, surface photometry, and stellar masses for the final sample.

SONNENFELD A., GAVAZZI R., SUYU S.H., TREU T. and MARSHALL P.J.

Abstract (from CDS):

We present Hubble Space Telescope (HST) imaging data and Canada-France-Hawaii Telescope (CFHT) near-infrared ground-based images for the final sample of 56 candidate galaxy-scale lenses uncovered in the CFHT Legacy Survey as part of the Strong Lensing in the Legacy Survey project. The new images are used to perform lens modeling, measure surface photometry, and estimate stellar masses of the deflector early-type galaxies (ETGs). Lens modeling is performed on the HST images (or CFHT when HST is not available) by fitting the spatially extended light distribution of the lensed features assuming a singular isothermal ellipsoid mass profile and by reconstructing the intrinsic source light distribution on a pixelized grid. Based on the analysis of systematic uncertainties and comparison with inference based on different methods, we estimate that our Einstein radii are accurate to ∼3%. HST imaging provides a much higher success rate in confirming gravitational lenses and measuring their Einstein radii than CFHT imaging does. Lens modeling with ground-based images, however, when successful, yields Einstein radius measurements that are competitive with space-based images. Information from the lens models is used together with spectroscopic information from companion Paper IV to classify the systems, resulting in a final sample of 39 confirmed (grade A) lenses and 17 promising candidates (grade B,C). This represents an increase of half an order of magnitude in sample size with respect to the sample of confirmed lenses studied in Papers I and II. The Einstein radii of the confirmed lenses in our sample span the range 5-15 kpc and are typically larger than those of other surveys, probing the mass in regions where the dark matter contribution is more important. Stellar masses are in the range 1011-1012 M☉, covering the range of massive ETGs. The redshifts of the main deflector span a range 0.3 ≤ zd ≤ 0.8, which nicely complements low-redshift samples like the Sloan Lens ACS survey and thus provides an excellent sample for the study of the cosmic evolution of the mass distribution of ETGs over the second half of the history of the universe.

Abstract Copyright: ∼

Journal keyword(s): galaxies: elliptical and lenticular, cD - gravitational lensing: strong

VizieR on-line data: <Available at CDS (J/ApJ/777/97): table4.dat table5.dat table6.dat table7.dat>

Simbad objects: 56

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Number of rows : 56
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 GAMA 1231004 gLe 02 08 33.10 -07 14 14.1           ~ 9 0
2 GAMA J021206.55-075528.1 gLe 02 12 06.56 -07 55 28.3           ~ 6 0
3 SL2S J021247-055552 gLe 02 12 47.0 -05 55 52           ~ 10 0
4 SL2S J021325-074355 gLe 02 13 24.520 -07 43 54.82           ~ 12 0
5 HSCS J021411-040502 gLe 02 14 11.240 -04 05 02.71         19.07 ~ 20 0
6 SDSS J021737.16-051329.5 rG 02 17 37.14752 -05 13 29.5242   23.372 22.054 21.102 19.12 ~ 51 0
7 SL2S J021801-080247 gLe 02 18 01.0 -08 02 47           ~ 8 0
8 SL2S J021902-082934 gLe 02 19 02.0 -08 29 34           ~ 14 0
9 SL2S J022046-094927 gLe 02 20 46.0 -09 49 27           ~ 6 0
10 SL2S J022056-063934 gLe 02 20 56.0 -06 39 34           ~ 6 0
11 SDSS J022346.15-053418.5 GiC 02 23 46.139 -05 34 18.44           ~ 13 0
12 GAMA J022357.94-065142.6 gLe 02 23 57.94 -06 51 42.8           ~ 7 0
13 FIRST J022511.0-045433 rG 02 25 11.0432107507 -04 54 33.577072969           ~ 21 2
14 SL2S J022610-042011 gLe 02 26 10.0 -04 20 11           ~ 17 0
15 SL2S J022648-040610 gLe 02 26 48.0 -04 06 10           ~ 9 0
16 SL2S J022648-090421 gLe 02 26 48.0 -09 04 21           ~ 6 0
17 GAMA J023251.57-040823.8 gLe 02 32 51.58 -04 08 23.9           ~ 17 0
18 SL2S J084847-035103 gLe 08 48 47.0 -03 51 03           ~ 10 0
19 SL2S J084909-041226 gLe 08 49 09.0 -04 12 26           ~ 13 0
20 SL2S J084934-043352 gLe 08 49 34.0 -04 33 52           ~ 4 0
21 SL2S J084959-025142 gLe 08 49 59.0 -02 51 42           ~ 11 0
22 SL2S J085019-034710 gLe 08 50 19.0 -03 47 10           ~ 7 0
23 SL2S J085327-023745 gLe 08 53 27.0 -02 37 45           ~ 3 0
24 SL2S J085540-014730 gLe 08 55 40.0 -01 47 30           ~ 10 0
25 SL2S J085559-040917 gLe 08 55 59.920 -04 09 17.76           ~ 7 0
26 SL2S J085826-014300 gLe 08 58 26.0 -01 43 00           ~ 4 0
27 SL2S J090106-025906 gLe 09 01 06.0 -02 59 06           ~ 6 0
28 SL2S J090407-005952 gLe 09 04 07.970 -00 59 52.85           ~ 15 0
29 SL2S J095921+020638 gLe 09 59 21.0 +02 06 38           ~ 11 0
30 SL2S J135847+545913 gLe 13 58 47.0 +54 59 13           ~ 6 0
31 SL2S J135949+553550 gLe 13 59 49.0 +55 35 50           ~ 11 0
32 SL2S J140123+555705 gLe 14 01 23.0 +55 57 05           ~ 6 0
33 SL2S J140156+554446 gLe 14 01 56.390 +55 44 46.78           ~ 7 0
34 SL2S J140221+550534 gLe 14 02 21.0 +55 05 34           ~ 4 0
35 SL2S J140454+520024 gLe 14 04 54.460 +52 00 24.70           ~ 10 0
36 SL2S J140533+550231 gLe 14 05 33.0 +55 02 31           ~ 3 0
37 SL2S J140546+524311 gLe 14 05 46.0 +52 43 11           ~ 11 0
38 SL2S J140614+520252 gLe 14 06 14.0 +52 02 52           ~ 6 0
39 SL2S J140650+522619 gLe 14 06 50.0 +52 26 19           ~ 12 0
40 SL2S J141137+565119 gLe 14 11 37.0 +56 51 19           ~ 15 0
41 DES J141917.24+511728.7 GiC 14 19 17.236 +51 17 28.55           ~ 6 0
42 SL2S J142003+523137 gLe 14 20 03.0 +52 31 37           ~ 4 0
43 [TCB2007] 13025503 AGN 14 20 31.89 +52 58 22.3   21.81   19.577 18.953 ~ 13 0
44 SL2S J142059+563007 gLe 14 20 59.0 +56 30 07           ~ 13 0
45 SL2S J142321+572243 gLe 14 23 21.0 +57 22 43           ~ 2 0
46 SL2S J142731+551645 gLe 14 27 31.0 +55 16 45           ~ 5 0
47 SL2S J220329+020518 gLe 22 03 29.030 +02 05 18.89           ~ 15 0
48 HSCS J220506+014703 gLe 22 05 06.920 +01 47 03.71           ~ 13 0
49 SL2S J220629+005728 gLe 22 06 29.0 +00 57 28           ~ 6 0
50 SL2S J221326-000946 gLe 22 13 26.0 -00 09 46           ~ 12 0
51 SL2S J221407-180712 gLe 22 14 07.0 -18 07 12           ~ 6 0
52 SL2S J221852+014038 gLe 22 18 52.0 +01 40 38           ~ 4 0
53 SL2S J221929-001743 gLe 22 19 29.0 -00 17 43           ~ 9 0
54 SL2S J222012+010606 gLe 22 20 12.0 +01 06 06           ~ 6 0
55 SL2S J222148+011542 gLe 22 21 48.0 +01 15 42           ~ 12 0
56 SL2S J222217+001202 gLe 22 22 17.0 +00 12 02           ~ 6 0

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