2018ApJ...858...42A

Query : 2018ApJ...858...42A

2018ApJ...858...42A - Astrophys. J., 858, 42-42 (2018/May-1)

RELICS: strong-lensing analysis of the massive clusters MACS J0308.9+2645 and PLCK G171.9-40.7.

ACEBRON A., CIBIRKA N., ZITRIN A., COE D., AGULLI I., SHARON K., BRADAC M., FRYE B., LIVERMORE R.C., MAHLER G., SALMON B., UMETSU K., BRADLEY L., ANDRADE-SANTOS F., AVILA R., CARRASCO D., CERNY C., CZAKON N.G., DAWSON W.A., HOAG A.T., HUANG K.-H., JOHNSON T.L., JONES C., KIKUCHIHARA S., LAM D., LOVISARI L., MAINALI R., OESCH P.A., OGAZ S., OUCHI M., PAST M., PATERNO-MAHLER R., PETERSON A., RYAN R.E., SENDRA-SERVER I., STARK D.P., STRAIT V., TOFT S., TRENTI M. and VULCANI B.

Abstract (from CDS):

Strong gravitational lensing by galaxy clusters has become a powerful tool for probing the high-redshift universe, magnifying distant and faint background galaxies. Reliable strong-lensing (SL) models are crucial for determining the intrinsic properties of distant, magnified sources and for constructing their luminosity function. We present here the first SL analysis of MACS J0308.9+2645 and PLCK G171.9-40.7, two massive galaxy clusters imaged with the Hubble Space Telescope, in the framework of the Reionization Lensing Cluster Survey (RELICS). We use the light-traces-mass modeling technique to uncover sets of multiply imaged galaxies and constrain the mass distribution of the clusters. Our SL analysis reveals that both clusters have particularly large Einstein radii (θE > 30'' for a source redshift of zs = 2), providing fairly large areas with high magnifications, useful for high-redshift galaxy searches (∼2 arcmin2 with µ > 5 to ∼1 arcmin2 with µ > 10, similar to a typical Hubble Frontier Fields cluster). We also find that MACS J0308.9+2645 hosts a promising, apparently bright (J ∼ 23.2-24.6 AB), multiply imaged high-redshift candidate at z ∼ 6.4. These images are among the brightest high-redshift candidates found in RELICS. Our mass models, including magnification maps, are made publicly available for the community through the Mikulski Archive for Space Telescopes.

Abstract Copyright: © 2018. The American Astronomical Society. All rights reserved.

Journal keyword(s): galaxies: clusters: individual: (MACS J0308.9+2645, PLCK G171.9-40.7) - gravitational lensing: strong

Nomenclature: Fig. 1, Table 2: [ACZ2018] MACS J0308 N.N N=7 among (Nos 1.1-1.3 to 3.1-3.2), [ACZ2018] MACS J0308 cN.N N=5 among (Nos c4.1-c4.3 to c5.1-c5.2), [ACZ2018] MACS J0308 c4.3b N=1. Fig. 2, Table 3: [ACZ2018] PLCK G171.9 N.N N=9 among (Nos 1.1-1.3 to 3.1-3.3), [ACZ2018] PLCK G171.9 cN.N N=11 among (Nos c4.1-c4.3 to c7.1-c7.3).

Simbad objects: 38

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Number of rows : 38
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 RELICS wfc3ir MACS J0308.9+2645 575 G 03 08 51.383 +26 45 36.89         27.5351 ~ 2 0
2 [ACZ2018] MACS J0308 1.3 LeI 03 08 53.345 +26 45 57.32           ~ 1 0
3 [ACZ2018] MACS J0308 c4.3 LI? 03 08 53.407 +26 44 58.93           ~ 2 0
4 RELICS wfc3ir MACS J0308.9+2645 904 G 03 08 53.407 +26 44 58.93   26.5435     25.1219 ~ 5 0
5 [ACZ2018] MACS J0308 c4.3b LeI 03 08 54.027 +26 44 48.71           ~ 1 0
6 [ACZ2018] MACS J0308 c5.2 LI? 03 08 54.205 +26 46 05.54           ~ 1 0
7 [ACZ2018] MACS J0308 2.1 LeI 03 08 54.266 +26 46 20.15           ~ 1 0
8 [ACZ2018] MACS J0308 3.2 LeI 03 08 54.810 +26 45 23.39           ~ 1 0
9 MCS J0308.9+2645 ClG 03 08 55.9 +26 45 38           ~ 48 0
10 [ACZ2018] MACS J0308 1.2 LeI 03 08 56.261 +26 45 37.22           ~ 1 0
11 [ACZ2018] MACS J0308 c4.2 LI? 03 08 56.347 +26 45 41.59           ~ 1 0
12 [ACZ2018] MACS J0308 2.2 LeI 03 08 56.611 +26 45 09.16           ~ 1 0
13 RELICS wfc3ir MACS J0308.9+2645 249 G 03 08 57.025 +26 46 07.15   25.9521     25.4500 ~ 2 0
14 [ACZ2018] MACS J0308 3.1 LeI 03 08 57.107 +26 46 20.97           ~ 1 0
15 [ACZ2018] MACS J0308 1.1 LeI 03 08 57.171 +26 45 37.22           ~ 1 0
16 [ACZ2018] MACS J0308 c4.1 LI? 03 08 57.179 +26 45 48.34           ~ 1 0
17 RELICS wfc3ir MACS J0308.9+2645 438 G 03 08 57.189 +26 45 48.37   25.9278     26.7470 ~ 2 0
18 RELICS wfc3ir MACS J0308.9+2645 991 G 03 08 57.197 +26 44 41.96   27.2261     26.6700 ~ 2 0
19 RELICS wfc3ir MACS J0308.9+2645 184 G 03 08 57.288 +26 46 19.27         27.0108 ~ 2 0
20 [ACZ2018] MACS J0308 c5.1 LI? 03 08 57.786 +26 45 40.55           ~ 1 0
21 RELICS wfc3ir PLCK G171.9-40.6 130 G 03 12 54.204 +08 23 03.88         25.1544 ~ 2 0
22 [ACZ2018] PLCK G171.9 3.1 LeI 03 12 55.015 +08 22 18.30           ~ 1 0
23 [ACZ2018] PLCK G171.9 c4.2 LI? 03 12 55.171 +08 22 26.60           ~ 1 0
24 [ACZ2018] PLCK G171.9 1.1 LeI 03 12 55.230 +08 22 08.10           ~ 1 0
25 PLCKESZ G171.9-40.7 ClG 03 12 55 +08 22.8           ~ 58 0
26 [ACZ2018] PLCK G171.9 2.2 LeI 03 12 55.447 +08 21 55.38           ~ 1 0
27 [ACZ2018] PLCK G171.9 c4.1 LI? 03 12 55.503 +08 22 34.21           ~ 1 0
28 [ACZ2018] PLCK G171.9 3.2 LeI 03 12 56.099 +08 22 40.68           ~ 1 0
29 [ACZ2018] PLCK G171.9 1.2 LeI 03 12 56.281 +08 22 36.36           ~ 1 0
30 [ACZ2018] PLCK G171.9 2.4 LeI 03 12 56.467 +08 22 32.21           ~ 1 0
31 RELICS wfc3ir PLCK G171.9-40.6 355 G 03 12 57.268 +08 22 35.47   25.8600     26.1924 ~ 2 0
32 [ACZ2018] PLCK G171.9 2.5 LeI 03 12 57.387 +08 22 12.06           ~ 1 0
33 RELICS wfc3ir PLCK G171.9-40.6 738 G 03 12 57.520 +08 21 51.10         26.2673 ~ 2 0
34 [ACZ2018] PLCK G171.9 2.1 LeI 03 12 58.043 +08 21 58.16           ~ 1 0
35 [ACZ2018] PLCK G171.9 3.3 LeI 03 12 58.699 +08 22 53.04           ~ 1 0
36 [ACZ2018] PLCK G171.9 1.3 LeI 03 12 59.036 +08 22 47.85           ~ 1 0
37 [ACZ2018] PLCK G171.9 c4.3 LI? 03 12 59.089 +08 22 50.69           ~ 1 0
38 [ACZ2018] PLCK G171.9 2.3 LeI 03 12 59.630 +08 22 42.42           ~ 1 0

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