2022ApJ...933...61H

Query : 2022ApJ...933...61H

2022ApJ...933...61H - Astrophys. J., 933, 61-61 (2022/July-1)

SDSS-IV MaNGA: Cannibalism Caught in the Act-On the Frequency of Occurrence of Multiple Cores in Brightest Cluster Galaxies.

HSU Y.-H., LIN Y.-T., HUANG S., NELSON D., RODRIGUEZ-GOMEZ V., LAI H.-T., GREENE J., LEAUTHAUD A., ARAGON-SALAMANCA A., BUNDY K., EMSELLEM E., MERRIFIELD M., MORE S., OKABE N., RONG Y., BROWNSTEIN J.R., LANE R.R., PAN K. and SCHNEIDER D.P.

Abstract (from CDS):

Although it is generally accepted that massive galaxies form in a two-phased fashion, beginning with a rapid mass buildup through intense starburst activities followed by primarily dry mergers that mainly deposit stellar mass at outskirts, the late time stellar mass growth of brightest cluster galaxies (BCGs), the most massive galaxies in the universe, is still not well understood. Several independent measurements have indicated a slower mass growth rate than predictions from theoretical models. We attempt to resolve the discrepancy by measuring the frequency of BCGs with multiple cores, which serve as a proxy of the merger rates in the central region and facilitate a more direct comparison with theoretical predictions. Using 79 BCGs at z = 0.06-0.15 with integral field spectroscopic data from the Mapping Nearby Galaxies at Apache Point Observatory (MaNGA) project, we obtain a multiple-core fraction of 0.11 ± 0.04 at z ≃ 0.1 within an 18 kpc radius from the center, which is comparable to the value of 0.08 ± 0.04 derived from mock observations of 218 simulated BCGs from the cosmological hydrodynamical simulation IllustrisTNG. We find that most cores that appear close to the BCGs from imaging data turn out to be physically associated systems. Anchoring on the similarity in the multiple-core frequency between the MaNGA and IllustrisTNG, we discuss the mass growth rate of BCGs over the past 4.5 Gyr.

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

Journal keyword(s): Galaxy formation - Galaxy clusters - Elliptical galaxies - Galaxy mergers

VizieR on-line data: <Available at CDS (J/ApJ/933/61): table2.dat>

Simbad objects: 129

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Number of rows : 129
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 LEDA 1150234 Sy2 03 05 59.3353077048 -00 09 59.269041144   17.49   16.03   ~ 17 0
2 2MASX J03141757-0036345 BiC 03 14 17.5962892104 -00 36 34.886338740   17.21   15.73   ~ 23 0
3 2MASX J03304013-0658228 BiC 03 30 40.1435806224 -06 58 23.136654288           ~ 8 0
4 LEDA 3092812 EmG 03 57 25.2185094816 -05 25 14.358461952   16.25   14.83   ~ 21 0
5 LEDA 1042862 G 04 00 20.1106440120 -05 35 06.946652220   17.60   15.98   ~ 17 0
6 FIRST J072840.6+412822 rG 07 28 40.6613495256 +41 28 22.887120468           ~ 15 0
7 Z 87-35 BiC 07 46 18.603 +18 22 07.30   15.3       ~ 42 0
8 NVSS J074950+345300 rG 07 49 49.4405731968 +34 53 02.123568960           ~ 23 0
9 LEDA 1865728 LIN 07 49 55.4672385336 +29 25 12.680106960           ~ 16 0
10 SDSS J075227.27+193224.6 G 07 52 27.2772334392 +19 32 24.601392816           ~ 9 0
11 LEDA 2046665 BiC 07 53 25.1831077200 +34 16 32.567880396           ~ 10 0
12 2MASX J07532661+2921341 BiC 07 53 26.5903625208 +29 21 34.034236596           ~ 19 1
13 2MASX J07560555+3344401 BiC 07 56 05.5301516064 +33 44 40.333560648           ~ 18 0
14 NGC 2484 Sy2 07 58 28.10812817 +37 47 11.8076475   14.15 14.9     ~ 284 1
15 SDSS J075940.54+540022.9 BiC 07 59 40.5510413232 +54 00 22.992918156           ~ 9 0
16 LEDA 1730404 rG 08 05 47.8938327552 +25 15 23.800848876           ~ 13 0
17 SDSS J080624.94+172503.7 LIN 08 06 24.9416042592 +17 25 03.698811804           ~ 21 1
18 SDSS J080843.45+144721.1 BiC 08 08 43.4565881016 +14 47 21.119163180           ~ 6 0
19 LEDA 97380 rG 08 10 08.5211771160 +35 16 30.966843648   17.8       ~ 24 0
20 FIRST J081014.6+201226 rG 08 10 14.6380489632 +20 12 26.136100584           ~ 18 0
21 MaNGA 1-122329 BiC 08 10 27.7137918408 +40 25 50.272588272           ~ 12 0
22 2MASS J08112809+4338179 AGN 08 11 28.0904351064 +43 38 17.966633280           ~ 8 0
23 NVSS J081631+434338 rG 08 16 31.1908351224 +43 43 42.424242924           ~ 11 0
24 4C 54.16 rG 08 18 03.867 +54 37 08.43           ~ 32 0
25 LEDA 2492305 LIN 08 21 33.1704264768 +55 09 07.018106976           ~ 15 0
26 LEDA 23645 BiC 08 25 29.061 +47 08 00.85           ~ 34 0
27 Z 208-3 rG 08 26 00.5764302600 +40 58 52.031162136   15.4       ~ 31 1
28 SDSS J082805.87+444600.2 BiC 08 28 05.8731343776 +44 46 00.270637824           ~ 24 0
29 LEDA 1711993 BiC 08 28 25.3779338472 +24 37 22.971871920           ~ 18 0
30 SDSS J083006.75+452106.4 G 08 30 06.7549223064 +45 21 06.326106516           ~ 13 0
31 LEDA 2231143 BiC 08 37 29.5016329944 +43 52 09.644042604           ~ 9 0
32 2MASX J08451244+2918219 BiC 08 45 12.4676308224 +29 18 22.389815664     16.68     ~ 8 0
33 MCG+05-21-006 AGN 08 46 32.4544621080 +29 35 55.359281760   16 15.16     ~ 28 1
34 LEDA 1805558 BiC 08 51 08.952 +27 21 21.20           ~ 14 0
35 2MASX J08540457+2903122 BiC 08 54 04.5261568368 +29 03 12.720275208     15.19     ~ 21 0
36 2MASX J08543662+0038331 BiC 08 54 36.6079391448 +00 38 33.255507192           ~ 17 0
37 2MASX J09083388+1602477 BiC 09 08 33.8609374968 +16 02 47.549994720           ~ 8 0
38 6C 090630+420932 LIN 09 09 45.9060713352 +41 57 21.095945244           ~ 30 1
39 NGC 2832 LIN 09 19 46.853 +33 44 59.07   13.3 13.17     ~ 274 3
40 LEDA 1204996 BiC 09 27 32.7761294112 +01 45 36.909913824           ~ 12 0
41 LEDA 2211781 BiC 09 45 54.7731779112 +43 02 48.138708408           ~ 16 0
42 LEDA 2052052 BiC 09 46 05.5315856568 +34 37 27.393858120           ~ 10 0
43 2dFGRS TGN419Z093 BiC 09 55 51.0707753976 +01 34 41.370631320   16.711   15.317   ~ 10 0
44 NVSS J103036+355500 rG 10 30 36.1545347352 +35 54 59.854836924           ~ 26 0
45 LEDA 3536512 LIN 10 30 53.5830570782 +41 13 15.983563598           ~ 26 1
46 LEDA 2073729 LIN 10 31 41.1174299064 +36 01 24.063388644           ~ 21 0
47 2MASX J10314436+3502291 BiC 10 31 44.3312039424 +35 02 28.928949180   18.7       ~ 16 0
48 SDSS J104351.95+010342.0 BiC 10 43 51.9557177256 +01 03 42.098013216           ~ 11 0
49 SDSS J105207.81+444624.3 G 10 52 07.80918 +44 46 24.3312           ~ 1 0
50 2MASX J11082310+4409011 BiC 11 08 23.1018476376 +44 09 01.048904064           ~ 25 0
51 NVSS J110859+502049 rG 11 08 58.9200345816 +50 20 54.035981304           ~ 12 1
52 LEDA 2299071 BiC 11 13 37.4424425304 +47 29 13.764678000           ~ 12 0
53 DES J111458.49+533730.0 BiC 11 14 58.5068796984 +53 37 29.759863656           ~ 11 0
54 LEDA 2266788 BiC 11 18 40.6919030616 +45 33 09.810532404           ~ 19 0
55 FIRST J114210.7+552729 rG 11 42 10.7288142744 +55 27 29.597053932           ~ 18 0
56 LEDA 2391267 BiC 11 44 53.8121374440 +51 16 01.112543256           ~ 16 0
57 LEDA 2395942 BiC 11 48 52.3110173568 +51 33 07.745508468           ~ 17 0
58 MCG+09-19-211 rG 11 50 11.2792938024 +53 43 20.668622484   17       ~ 26 1
59 2MASX J12052841+5128478 BiC 12 05 28.3962603408 +51 28 47.856276192           ~ 15 0
60 LEDA 2286141 BiC 12 07 18.6167809368 +46 43 39.076851828           ~ 13 0
61 NVSS J121559+354302 rG 12 15 59.3559626568 +35 43 02.579339352           ~ 23 1
62 NVSS J122947+364051 rG 12 29 47.4527651784 +36 40 55.618187232           ~ 14 0
63 NVSS J124647+545315 rG 12 46 47.5364864520 +54 53 15.124453692           ~ 24 1
64 NGC 4874 LIN 12 59 35.7093764280 +27 57 33.293892204 13.01 13.7 12.71 12.27 11.386 ~ 814 3
65 ACO 1656 ClG 12 59 44.40 +27 54 44.9           ~ 5141 2
66 LEDA 1788422 G 13 00 21.1758630840 +26 47 19.326084180           ~ 9 0
67 LEDA 3482637 BiC 13 36 26.9696703528 +54 53 53.735575308           ~ 8 0
68 MCG+05-32-063 rG 13 41 49.131 +26 22 24.54   15.3       ~ 45 1
69 2MASX J13424201+2614234 GiC 13 42 41.9845730520 +26 14 23.131371660           ~ 17 0
70 LEDA 2507977 BiC 13 42 56.3558622672 +55 36 13.975142868           ~ 15 0
71 LEDA 2423397 GiC 13 44 50.1782890056 +52 46 33.448277964           ~ 7 0
72 2MASX J13564474+4454124 BiC 13 56 44.7842286240 +44 54 11.837763900           ~ 9 0
73 6C 141004+530258 Bla 14 11 49.4453005152 +52 49 00.219602568   16.5       ~ 81 1
74 2MASS J14152035+5220449 BiC 14 15 20.3624929056 +52 20 45.162745332   17.13   15.62 15.30 ~ 26 0
75 NVSS J141552+501927 rG 14 15 52.8884168568 +50 19 25.678308684   17.12       ~ 16 0
76 SDSS J141922.66+375220.9 BiC 14 19 22.6751761848 +37 52 20.916311160           ~ 4 0
77 NVSS J142351+401528 rG 14 23 51.5352127704 +40 15 31.833778572   17.2       ~ 34 0
78 SDSS J143745.06+483524.0 BiC 14 37 45.066 +48 35 24.06           ~ 12 0
79 NGC 5718 LIN 14 40 42.835 +03 27 55.52   14.6       ~ 73 1
80 LEDA 1994131 BiC 14 51 14.4311123496 +32 22 41.472728148           ~ 16 0
81 SDSS J145233.55+505522.1 BiC 14 52 33.5564064888 +50 55 22.197866592           ~ 14 0
82 6C 150059+525600 SyG 15 02 29.0457642744 +52 44 02.109893964           ~ 21 1
83 SDSS J150243.88+530248.3 BiC 15 02 43.8853688592 +53 02 48.434652924           ~ 7 0
84 2MASX J15080990+2913200 GiC 15 08 09.938 +29 13 19.89           ~ 13 0
85 2MASX J15134844+2801587 BiC 15 13 48.4456881504 +28 01 58.654734060           ~ 12 0
86 LEDA 1820856 BiC 15 17 43.0610036016 +27 53 43.281420864           ~ 12 0
87 LEDA 3089238 AGN 15 23 36.7497341208 +28 38 35.058931224           ~ 25 0
88 2MASX J15240741+2953203 BiC 15 24 07.4264789208 +29 53 20.273166852   15.9       ~ 14 0
89 LEDA 140518 GiC 15 24 24.0775581048 +30 00 21.765189312   17.7       ~ 15 0
90 NVSS J153015+290111 rG 15 30 10.2734781888 +29 00 30.167945712           ~ 52 0
91 2MASX J15331995+3112430 BiC 15 33 19.9551048936 +31 12 43.294401936   17.31       ~ 11 0
92 NVSS J153638+255427 rG 15 36 38.9439629016 +25 54 24.519054240           ~ 17 0
93 IC 4572 LIN 15 41 54.1961544816 +28 08 02.390629632   15.0       ~ 39 0
94 NVSS J155257+273946 rG 15 52 57.2823488616 +27 39 47.832604416           ~ 24 0
95 FIRST J155311.9+273320 rG 15 53 11.9354912736 +27 33 20.638251936           ~ 19 0
96 LEDA 1806627 GiG 15 53 29.6496814176 +27 23 23.611657884           ~ 9 0
97 2MASX J15564682+2551256 BiC 15 56 46.8664216584 +25 51 25.364469060           ~ 15 0
98 2MASX J15582002+2714000 BiC 15 58 20.000 +27 14 00.28   14.48       ~ 40 1
99 FIRST J155852.6+262619 rG 15 58 52.6620733176 +26 26 19.009943916           ~ 23 0
100 LEDA 1763234 G 16 01 23.6634983016 +26 06 58.224106224           ~ 7 0
101 2MASX J16031986+2527132 BiC 16 03 19.8416000712 +25 27 13.338047520           ~ 26 1
102 SDSS J160721.78+285105.8 BiC 16 07 21.7819061544 +28 51 05.819732676           ~ 6 0
103 2MASX J16073060+2314106 BiC 16 07 30.6308000160 +23 14 10.597047828           ~ 8 0
104 2MASX J16111385+3658238 BiC 16 11 13.8422451720 +36 58 24.269136132   16.5       ~ 21 0
105 Z 167-39 BiC 16 11 58.1358183000 +29 50 18.785129424   14.8       ~ 35 0
106 NVSS J161638+422704 rG 16 16 37.8268477944 +42 26 55.642372188           ~ 27 1
107 SDSS J161843.94+255650.6 BiC 16 18 43.948 +25 56 50.68           ~ 7 0
108 NVSS J162030+295327 rG 16 20 31.1256776952 +29 53 27.754798668   18.1       ~ 32 1
109 2MASX J16212688+4245413 BiC 16 21 26.9376983256 +42 45 40.620839292   18.2       ~ 18 0
110 LEDA 1732756 LIN 16 24 41.3355367032 +25 19 41.635229448           ~ 15 0
111 LEDA 2232578 G 16 25 42.3232770336 +43 55 54.345418896           ~ 16 0
112 NGC 6173 LIN 16 29 44.8864037664 +40 48 41.890972320   14.0       ~ 180 0
113 LEDA 2304535 G 16 30 46.7890111728 +47 47 41.178955380           ~ 11 0
114 Z 138-30 Sy2 16 30 53.8419555312 +24 33 43.559050824   15.7       ~ 17 0
115 Z 80-45 G 16 32 05.2559772792 +13 38 50.632791576   15.4       ~ 24 0
116 LEDA 1751069 BiC 16 33 35.6362958016 +25 49 07.452825240           ~ 11 0
117 FIRST J163624.3+283705 rG 16 36 24.4736801208 +28 37 03.981344736           ~ 12 0
118 NGC 6233 G 16 50 15.6991191720 +23 34 47.374558644   14.9       ~ 25 0
119 LEDA 59392 rG 16 59 43.9541268336 +32 36 55.156370976   16.37       ~ 28 0
120 2MASX J17015311+3503034 BiC 17 01 53.1037807680 +35 03 03.982116492   18.3       ~ 10 0
121 2MASX J17023312+3331003 LIN 17 02 33.1453910928 +33 30 59.941378800           ~ 44 0
122 FIRST J170242.5+340337 rG 17 02 42.4914860544 +34 03 35.831926944   14.5       ~ 40 1
123 LEDA 59831 rG 17 12 28.8000059448 +64 03 38.754457596           ~ 35 1
124 NGC 6338 Bla 17 15 22.9842192344 +57 24 40.346559927   14.2   8   ~ 205 2
125 LEDA 1817756 BiC 17 16 35.6844215784 +27 46 44.349038580           ~ 11 0
126 LEDA 1153026 rG 20 51 38.2143650400 -00 03 21.148804476   17.08   15.33   ~ 15 0
127 LEDA 1179438 AGN 21 25 46.358 +00 55 51.90           ~ 26 0
128 LEDA 1159160 G 21 28 27.6543213120 +00 10 55.406414064           ~ 13 0
129 6dFGS gJ213027.0-000024 BiC 21 30 26.9488479864 -00 00 24.277652928   17.10   15.42   ~ 25 0

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