2022ApJ...932...85P

Query : 2022ApJ...932...85P

2022ApJ...932...85P - Astrophys. J., 932, 85-85 (2022/June-3)

Possible Ongoing Merger Discovered by Photometry and Spectroscopy in the Field of the Galaxy Cluster PLCK G165.7+67.0.

PASCALE M., FRYE B.L., DAI L., FOO N., QIN Y., LEIMBACH R., BAUER A.M., MERLIN E., COE D., DIEGO J., YAN H., ZITRIN A., COHEN S.H., CONSELICE C.J., DOLE H., HARRINGTON K., JANSEN R.A., KAMIENESKI P., WINDHORST R.A. and YUN M.S.

Abstract (from CDS):

We present a detailed study of the Planck-selected binary galaxy cluster PLCK G165.7+67.0 (G165; z = 0.348). A multiband photometric catalog is generated incorporating new imaging from the Large Binocular Telescope/Large Binocular Camera and Spitzer/IRAC to existing imaging. To cope with the different image characteristics, robust methods are applied in the extraction of the matched-aperture photometry. Photometric redshifts are estimated for 143 galaxies in the 4 arcmin2 field of overlap covered by these data. We confirm that strong-lensing effects yield 30 images of 11 background galaxies, of which we contribute new photometric redshift estimates for three image multiplicities. These constraints enable the construction of a revised lens model with a total mass of M_600 kpc_ = (2.36 ± 0.23) x 1014M☉. In parallel, new spectroscopy using MMT/Binospec and archival data contributes thirteen galaxies that meet our velocity and transverse radius criteria for cluster membership. The two cluster components have a pair-wise velocity of <=100 km s–1, favoring an orientation in the plane of the sky with a transverse velocity of 100-1700 km s–1. At the same time, the brightest cluster galaxy (BCG) is offset in velocity from the systemic mean value, suggesting dynamical disturbance. New LOFAR and Very Large Array data uncover head-tail radio galaxies in the BCG and a large red galaxy in the northeast component. From the orientation and alignment of the four radio trails, we infer that the two cluster components have already traversed each other, and are now exiting the cluster.

Abstract Copyright: © 2022. The Author(s). Published by the American Astronomical Society.

Journal keyword(s): Large-scale structure of the universe - Gravitational lensing - Strong gravitational lensing - Galaxies - High-redshift galaxies - Galaxy clusters

Nomenclature: Table 2: [PFD2022] NN (Nos 1-28).

Simbad objects: 35

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Number of rows : 35
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 ACO 2744 ClG 00 14 20.03 -30 23 17.8           ~ 1077 0
2 [FPQ2019] s7 G 11 26 59.471 +42 28 10.81           ~ 2 0
3 [PFD2022] 28 G 11 27 08.59 +42 28 29.2           ~ 1 0
4 [PFD2022] 26 G 11 27 09.72 +42 28 43.5           ~ 1 0
5 [PFD2022] 14 G 11 27 11.11 +42 28 01.5           ~ 1 0
6 [PFD2022] 22 G 11 27 11.64 +42 29 05.9           ~ 1 0
7 [PFD2022] 17 G 11 27 11.82 +42 28 14.1           ~ 1 0
8 [PFD2022] 11 G 11 27 12.71 +42 27 50.8           ~ 1 0
9 [PFD2022] 23 G 11 27 13.26 +42 29 09.7           ~ 1 0
10 [FPQ2019] G165 DSFG 1b LeG 11 27 13.917 +42 28 35.56           ~ 2 0
11 [PFD2022] 27 G 11 27 14.10 +42 28 45.2           ~ 1 0
12 PCCS1 857 G165.65+67.01 LeG 11 27 14.731 +42 28 22.56           ~ 19 0
13 [PFD2022] 12 G 11 27 15.12 +42 28 15.6           ~ 1 0
14 [CNL2018] PLCK G165.7+67.0 5.3 LeG 11 27 15.365 +42 28 41.16           ~ 4 0
15 [PFD2022] 20 G 11 27 15.60 +42 28 37.7           ~ 1 0
16 [CNL2018] PLCK G165.7+67.0 5.2 LeG 11 27 15.631 +42 28 34.25           ~ 4 0
17 [PFD2022] 6 LeG 11 27 15.78 +42 28 40.2           ~ 1 0
18 [CNL2018] PLCK G165.7+67.0 8.2 LeG 11 27 15.802 +42 28 41.97           ~ 3 0
19 [CNL2018] PLCK G165.7+67.0 8.1 LeG 11 27 15.816 +42 28 40.86           ~ 3 0
20 [CNL2018] PLCK G165.7+67.0 5.1 LeG 11 27 16.003 +42 28 28.84           ~ 4 0
21 [PFD2022] 15 G 11 27 16.27 +42 28 23.7           ~ 1 0
22 [PFD2022] 9 G 11 27 16.42 +42 27 35.7           ~ 1 0
23 [FPQ2019] G165 11c LeI 11 27 16.510 +42 28 26.12           ~ 2 0
24 [CNL2018] PLCK G165.7+67.0 lens ClG 11 27 16.60 +42 28 38.8           ~ 18 0
25 [PFD2022] 18 G 11 27 16.61 +42 28 36.5           ~ 1 0
26 SDSS J112716.69+422838.1 BiC 11 27 16.6911274416 +42 28 38.185828716           ~ 5 0
27 [PFD2022] 7 G 11 27 17.06 +42 27 26.2           ~ 1 0
28 [PFD2022] 21 G 11 27 17.33 +42 28 51.9           ~ 1 0
29 [PFD2022] 24 G 11 27 19.00 +42 29 34.3           ~ 1 0
30 [PFD2022] 19 G 11 27 19.10 +42 28 48.1           ~ 1 0
31 [PFD2022] 16 G 11 27 19.26 +42 28 43.0           ~ 1 0
32 [PFD2022] 25 G 11 27 19.52 +42 29 24.2           ~ 1 0
33 [PFD2022] 10 G 11 27 20.87 +42 28 04.0           ~ 1 0
34 [PFD2022] 8 G 11 27 21.86 +42 27 53.4           ~ 1 0
35 DES J112724.54+422948.9 GiC 11 27 24.5450 +42 29 48.985           ~ 3 0

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