2014ApJ...797...98L


C.D.S. - SIMBAD4 rel 1.7 - 2020.05.25CEST01:58:14

2014ApJ...797...98L - Astrophys. J., 797, 98 (2014/December-3)

A rigorous free-form lens model of A2744 to meet the Hubble frontier fields challenge.

LAM D., BROADHURST T., DIEGO J.M., LIM J., COE D., FORD H.C. and ZHENG W.

Abstract (from CDS):

Hubble Frontier Fields (HFF) imaging of the most powerful lensing clusters provides access to the most magnified distant galaxies. The challenge is to construct lens models capable of describing these complex massive, merging clusters so that individual lensed systems can be reliably identified and their intrinsic properties accurately derived. We apply the free-form lensing method (WSLAP+) to A2744, providing a model independent map of the cluster mass, magnification, and geometric distance estimates to multiply lensed sources. We solve simultaneously for a smooth cluster component on a pixel grid, together with local deflections by the cluster member galaxies. Combining model prediction with photometric redshift measurements, we correct and complete several systems recently claimed and identify four new systems totaling 65 images of 21 systems spanning a redshift range of 1.4 < z < 9.8. The reconstructed mass shows small enhancements in the directions where significant amounts of hot plasma can be seen in X-ray. We compare photometric redshifts with "geometric redshifts," finding a high level of self-consistency. We find excellent agreement between predicted and observed fluxes with a best-fit slope of 0.999±0.013 and an rms of ∼0.25 mag, demonstrating that our magnification correction of the lensed background galaxies is very reliable. Intriguingly, few multiply lensed galaxies are detected beyond z ≃ 7.0, despite the high magnification and the limiting redshift of z ≃ 11.5 permitted by the HFF filters. With the additional HFF clusters, we can better examine the plausibility of any pronounced high-z deficit with potentially important implications for the reionization epoch and the nature of dark matter.

Abstract Copyright:

Journal keyword(s): dark matter - galaxies: high-redshift - gravitational lensing: strong

Nomenclature: Table 1: [LBD2014] N.N.N N=43 among (Nos 1.1.1-4.5.2), [LBD2014] NN.N N=53 among (Nos 5.1-23.2).

Status at CDS:  

Simbad objects: 68

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Number of rows : 68

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 [LBD2014] 14.1 LeI 00 14 18.270 -30 24 16.16         26.7982 ~ 6 0
2 [ARK2015] 2.1 LeG 00 14 19.1625 -30 24 05.735         30.99 ~ 5 0
3 [LBD2014] 5.3 LeI 00 14 19.228 -30 23 40.74     28.0366   27.4697 ~ 3 0
4 [IKO2015] 6.3 LeI 00 14 19.300 -30 24 32.13           ~ 5 0
5 [LFL2017] A2744 z7 3258 LeG 00 14 19.3086 -30 24 18.151         29.55 ~ 10 0
6 [IKO2015] 13.2 LeI 00 14 19.870 -30 24 32.09   25.8064 24.7779   24.2444 ~ 7 0
7 [IKO2015] 15.3 LeI 00 14 19.870 -30 24 28.96   28.7583 29.1547   28.4064 ~ 6 0
8 [IKO2015] 3.2 LeI 00 14 19.980 -30 24 12.06   25.9814 25.8830   26.0875 ~ 7 0
9 [IKO2015] 7.1 LeI 00 14 20.020 -30 23 31.45     27.3476   26.8924 ~ 6 0
10 ACO 2744 ClG 00 14 20.03 -30 23 17.8           ~ 564 0
11 [LBD2014] 21.2 LeI 00 14 20.0511 -30 23 48.124           ~ 2 0
12 [MAC2016] A2744cl 831 LeI 00 14 20.095 -30 24 14.76         28.8464 ~ 3 0
13 [IKO2015] 9.3 LeI 00 14 20.300 -30 24 35.33   26.7095 25.9497   25.8229 ~ 7 0
14 [IKO2015] 7.2 LeI 00 14 20.400 -30 23 28.95     28.0923   27.6107 ~ 6 0
15 [LFL2017] A2744 z7 2250 LeG 00 14 20.477 -30 23 52.67         29.17 ~ 9 0
16 [MAC2016] A2744cl 902 LeI 00 14 20.627 -30 24 11.35         29.1862 ~ 3 0
17 [IKO2015] 8.3 LeI 00 14 20.740 -30 24 33.74   24.8179 24.7360   24.8355 ~ 8 0
18 [LBD2014] 9.2 LeG 00 14 20.910 -30 24 22.47   27.1817 27.5029   27.3535 ~ 8 0
19 [IKO2015] 12.2 LeI 00 14 20.970 -30 24 23.33   26.9296 26.5526   26.8241 ~ 7 0
20 [LBD2014] 17.4 LeI 00 14 20.9883 -30 24 04.946         29.22 ~ 2 0
21 [LBD2014] 16.3 LeI 00 14 21.098 -30 24 41.82         27.9029 ~ 3 0
22 [LBD2014] 15.3 LeI 00 14 21.1542 -30 24 38.041           ~ 1 0
23 [IKO2015] 11.1 LeI 00 14 21.210 -30 24 18.98   27.2724 26.8997   26.8530 ~ 7 0
24 [IKO2015] 17.2 LeI 00 14 21.210 -30 23 44.29           ~ 4 0
25 [IKO2015] 12.1 LeI 00 14 21.220 -30 24 21.16   25.1510 24.8190   24.4936 ~ 7 0
26 [ZSM2014] ZD7B LeG 00 14 21.223 -30 24 37.22           ~ 2 0
27 [LBD2014] 3.1.1 LeI 00 14 21.4765 -30 23 37.932           ~ 1 0
28 [LBD2014] 20.2 LeI 00 14 21.6838 -30 24 38.081           ~ 1 0
29 [LBD2014] 14.2 LeG 00 14 21.780 -30 23 44.02     28.5820   25.1852 ~ 7 0
30 [MCD2011] 11.1 LeI 00 14 21.930 -30 24 13.89   28.7432 28.0909   28.2105 ~ 6 0
31 [LFL2017] A2744 z7 22984 LeG 00 14 22.164 -30 24 35.61           ~ 5 0
32 [IKO2015] 15.1 LeI 00 14 22.170 -30 24 09.21   27.5930 26.6278   26.3890 ~ 6 0
33 [KOI2016] HFF1C-2220-4053 LeG 00 14 22.20 -30 24 05.4         29.9407 ~ 10 0
34 [LBD2014] 12.2 LeG 00 14 22.380 -30 24 11.72   27.5000 27.1095   27.1354 ~ 7 0
35 [LBD2014] 15.1 LeI 00 14 22.453 -30 24 34.96     28.5562   26.9913 ~ 6 0
36 [RJL2014] A2744 12.1 LeI 00 14 22.470 -30 24 16.09   27.4105 27.2506   26.7708 ~ 5 0
37 [IKO2015] 15.2 LeI 00 14 22.510 -30 24 07.79   26.8839 27.0551   26.6099 ~ 6 0
38 [LBD2014] 20.1 LeI 00 14 22.5313 -30 24 35.003           ~ 1 0
39 [IKO2015] 8.2 LeI 00 14 22.570 -30 24 28.84   25.1265 25.0984   25.1986 ~ 8 0
40 [RJL2014] A2744 11.4 LeI 00 14 22.690 -30 24 23.55   27.5994 27.1434   27.3261 ~ 5 0
41 [LBD2014] 12.3 LeG 00 14 22.700 -30 24 10.76   27.2575 26.7581   26.9377 ~ 7 0
42 [ZZB2014] JD1B LeG 00 14 22.80 -30 24 02.7         2.1 ~ 7 0
43 [IKO2015] 9.2 LeI 00 14 22.850 -30 24 26.73   24.7882 24.4977   24.1851 ~ 7 0
44 [MAC2016] A2744cl 724 LeI 00 14 22.853 -30 24 19.46   28.5714 27.8047   27.9607 ~ 3 0
45 [LBD2014] 23.1 LeI 00 14 23.0915 -30 24 10.958           ~ 1 0
46 [BIO2017] A2744I-4231724324 LeG 00 14 23.173 -30 24 32.44         27.6033 ~ 7 0
47 [IKO2015] 13.1 LeI 00 14 23.340 -30 24 05.23   27.7016 27.0421   27.4205 ~ 7 0
48 [IKO2015] 1.2 LeI 00 14 23.410 -30 24 14.10   23.8485 23.5969   23.7088 ~ 7 0
49 [LFL2017] A2744 z7 2019 LeI 00 14 23.4802 -30 23 45.456   29.7068     29.64 ~ 11 0
50 [IKO2015] 9.1 LeI 00 14 23.580 -30 24 08.35   26.5437 25.8161   25.6743 ~ 7 0
51 [IKO2015] 8.1 LeI 00 14 23.650 -30 24 06.48   25.2022 25.1535   25.3038 ~ 8 0
52 [LBD2014] 16.2 LeI 00 14 24.013 -30 24 15.82         27.8497 ~ 7 0
53 [MAC2016] A2744cl 942 LeI 00 14 24.018 -30 24 10.46   28.7005 27.2752   27.6570 ~ 3 0
54 [ARK2014] 3.2 LeI 00 14 24.131 -30 24 06.56     29.7196   27.6986 ~ 5 0
55 [LBD2014] 22.3 LeI 00 14 24.1576 -30 23 43.570           ~ 1 0
56 [IKO2015] 12.3 LeI 00 14 24.170 -30 23 49.56   26.4846 25.9934   26.1225 ~ 7 0
57 [LBD2014] 18.3 LeI 00 14 24.187 -30 24 03.43         29.9956 ~ 3 0
58 [LBD2014] 9.3 LeI 00 14 24.356 -30 23 45.59   28.2864 27.9453   27.7443 ~ 3 0
59 ACT-CL J0102-4915 ClG 01 02 52.50 -49 14 58.0           ~ 148 0
60 ACO 370 ClG 02 39 50.5 -01 35 08           ~ 635 0
61 MCS J0416.1-2403 ClG 04 16 08.380 -24 04 20.80           ~ 207 0
62 ClG 0657-56 ClG 06 58 29.6 -55 56 39           ~ 791 1
63 B3 0714+378 Rad 07 17 36.50 +37 45 23.0           ~ 169 2
64 ClG J0717+3745 ClG 07 17 36.50 +37 45 23.0           ~ 348 0
65 MCS J1149.5+2223 ClG 11 49 35.8 +22 23 55           ~ 314 0
66 NAME Hubble Deep Field reg 12 36 49.5 +62 12 58           ~ 1821 1
67 ACO 1689 ClG 13 11 29.5 -01 20 28           ~ 1016 0
68 ACO 1750 ClG 13 30 49.94 -01 52 22.1           ~ 143 1

    Equat.    Gal    SGal    Ecl

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2020.05.25-01:58:14

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