2024ApJ...972...57H

Query : 2024ApJ...972...57H

2024ApJ...972...57H - Astrophys. J., 972, 57 (2024/September-1)

The Ks-band Luminosity Function of the Rich Cluster VC04 in the Vela Supercluster.

HATAMKHANI N., KRAAN-KORTEWEG R.C., BLYTH S.L. and SKELTON R.E.

Abstract (from CDS):

To learn more about the properties of the Vela Supercluster (VSCL), located behind the Milky Way at cz ∼ 18,000 km s–1, we determine the Ks-band luminosity function (LF) of VC04, the richest known galaxy cluster in the VSCL, and two other VSCL clusters (VC02 and VC08). The galaxy sample is based on NIR observations that are complete to an extinction-corrected absolute magnitude of ${M}_{{Ks}}^{o}\lt -21\buildrel{\rm{m}}\over{.} 5$ (∼2.ͫ5 below ${M}_{K}^{* }$), within the clustercentric radius of rc < 1.5 Mpc (∼70% of the Abell radius). For VC04, we obtained 90 new spectroscopic redshifts of galaxies, observed with the 11 m Southern African Large Telescope. We found the Schechter parameters of the VC04 LF to be M* = -24.ͫ41 ± 0.44, α = -1.10 ± 0.20, and ϕ* = 8.84 ± 0.20. Both the redshift data and the LF confirm VC04 to be a rich but not yet fully relaxed cluster. We independently determined the LF of VC04 on membership defined by the red-sequence method and demonstrated that this method can be used in the absence of high spectroscopic coverage over a cluster. This allowed us to determine the LFs of VC02 and VC08. We also derived the LFs of the Coma, Norma, and Virgo clusters to similar depth and extent as the VSCL clusters. We found that the Schechter parameters of VC04 are within 1σ uncertainties of these local clusters, as well as VC02 and VC08. We do not find significant differences between the LFs in the different cluster environments probed in this work down to ${M}_{K}^{* }+2\buildrel{\rm{m}}\over{.} 5$.

Abstract Copyright: © 2024. The Author(s). Published by the American Astronomical Society.

Journal keyword(s): Galaxy clusters - Luminosity function - Near infrared astronomy - Galaxy spectroscopy

Nomenclature: Table 2: [HKB2024] NN (Nos 1-90).

Simbad objects: 105

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Number of rows : 105
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 [HKB2023] VC02 ClG 08 10.8 -49 23           ~ 2 0
3 CIZA J0812.5-5714 ClG 08 12 30.3 -57 14 06           ~ 21 0
4 CIZA J0820.9-5704 ClG 08 20 59.6 -57 04 47           ~ 16 0
5 [HKB2024] 14 G 08 34 04 -55 41.9           ~ 1 0
6 [HKB2024] 60 G 08 34 30 -55 47.8           ~ 1 0
7 [HKB2024] 58 G 08 34 34 -55 52.0           ~ 1 0
8 [HKB2024] 76 G 08 34 35 -55 59.4           ~ 1 0
9 [HKB2024] 57 G 08 34 44 -55 51.9           ~ 1 0
10 [HKB2024] 56 G 08 34 46 -55 53.9           ~ 1 0
11 [HKB2024] 77 G 08 34 55 -55 58.1           ~ 1 0
12 [HKB2024] 55 G 08 34 55 -55 53.7           ~ 1 0
13 [HKB2024] 59 G 08 34 59 -55 49.4           ~ 1 0
14 [HKB2024] 8 G 08 35 56 -55 44.2           ~ 1 0
15 [HKB2024] 10 G 08 36 00 -55 42.8           ~ 1 0
16 [HKB2024] 44 G 08 36 03 -55 51.0           ~ 1 0
17 [HKB2024] 7 G 08 36 05 -55 44.6           ~ 1 0
18 [HKB2024] 3 G 08 36 06 -55 45.7           ~ 1 0
19 [HKB2024] 9 G 08 36 07 -55 42.8           ~ 1 0
20 [HKB2024] 5 G 08 36 07 -55 45.1           ~ 1 0
21 [HKB2024] 11 G 08 36 07 -55 42.2           ~ 1 0
22 LEDA 2791002 G 08 36 07.621 -55 41 06.61           ~ 3 0
23 [HKB2024] 12 G 08 36 14 -55 41.5           ~ 1 0
24 [HKB2024] 46 G 08 36 16 -55 50.0           ~ 1 0
25 [HKB2024] 1 G 08 36 18 -55 46.0           ~ 1 0
26 [HKB2024] 54 G 08 36 18 -55 46.0           ~ 1 0
27 [HKB2024] 47 G 08 36 19 -55 49.7           ~ 1 0
28 [HKB2024] 48 G 08 36 22 -55 49.4           ~ 1 0
29 [HKB2024] 4 G 08 36 24 -55 44.5           ~ 1 0
30 [HKB2024] 2 G 08 36 24 -55 45.0           ~ 1 0
31 LEDA 403981 G 08 36 24.5664251664 -56 00 30.631314312           ~ 3 0
32 [HKB2024] 45 G 08 36 28 -55 50.5           ~ 1 0
33 LEDA 2791008 G 08 36 29.2 -55 48 01           ~ 3 0
34 [HKB2024] 88 G 08 36 30 -56 00.8           ~ 1 0
35 [HKB2024] 85 G 08 36 30 -56 06.7           ~ 1 0
36 LEDA 2791009 G 08 36 31.0307055624 -55 49 09.183448884           ~ 3 0
37 [HKB2024] 86 G 08 36 31 -56 03.3           ~ 1 0
38 [HKB2024] 6 G 08 36 32 -55 43.7           ~ 1 0
39 [HKB2024] 27 G 08 36 32 -55 37.5           ~ 1 0
40 LEDA 405144 G 08 36 33.7 -55 53 00           ~ 3 0
41 [HKB2023] VC04 ClG 08 36 34.80 -55 48 54.0           ~ 4 0
42 [HKB2024] 84 G 08 36 39 -56 07.1           ~ 1 0
43 [HKB2024] 87 G 08 36 42 -56 01.3           ~ 1 0
44 [HKB2024] 23 G 08 36 42 -55 40.9           ~ 1 0
45 [HKB2024] 26 G 08 36 42 -55 37.7           ~ 1 0
46 [HKB2024] 53 G 08 36 43 -55 47.2           ~ 1 0
47 LEDA 405844 G 08 36 44.1625148592 -55 48 23.408685000           ~ 3 0
48 [HKB2024] 82 G 08 36 46 -55 56.8           ~ 1 0
49 [HKB2024] 78 G 08 36 46 -56 01.2           ~ 1 0
50 [HKB2024] 52 G 08 36 46 -55 47.8           ~ 1 0
51 [HKB2024] 20 G 08 36 47 -55 41.8           ~ 1 0
52 WISE J083648.09-554017.9 G 08 36 48.0971620067 -55 40 17.634042513           ~ 2 0
53 [HKB2024] 22 G 08 36 49 -55 40.7           ~ 1 0
54 [HKB2024] 17 G 08 36 50 -55 44.9           ~ 1 0
55 [HKB2024] 16 G 08 36 51 -55 45.2           ~ 1 0
56 LEDA 2791019 G 08 36 53.0 -55 49 07           ~ 3 0
57 [HKB2024] 67 G 08 36 55 -55 49.9           ~ 1 0
58 LEDA 2791023 G 08 36 56.3917602872 -55 49 19.247296216           ~ 4 0
59 [HKB2024] 19 G 08 36 58 -55 42.2           ~ 1 0
60 LEDA 407920 G 08 37 00.1972630824 -55 34 55.313865804           ~ 3 0
61 [HKB2024] 81 G 08 37 00 -55 58.1           ~ 1 0
62 [HKB2024] 21 G 08 37 02 -55 40.3           ~ 1 0
63 [HKB2024] 62 G 08 37 03 -55 54.0           ~ 1 0
64 [HKB2024] 79 G 08 37 03 -56 01.2           ~ 1 0
65 [HKB2024] 66 G 08 37 03 -55 50.9           ~ 1 0
66 [HKB2024] 25 G 08 37 09.1261936229 -55 37 52.017054985           ~ 2 0
67 [HKB2024] 41 G 08 37 09 -55 31.6           ~ 1 0
68 [HKB2024] 29 G 08 37 12 -55 36.9           ~ 1 0
69 [HKB2024] 18 G 08 37 15 -55 42.7           ~ 1 0
70 [HKB2024] 61 G 08 37 16 -55 54.9           ~ 1 0
71 [HKB2024] 80 G 08 37 18 -56 01.7           ~ 1 0
72 [HKB2024] 64 G 08 37 18 -55 52.4           ~ 1 0
73 [HKB2024] 90 G 08 37 22 -56 00.5           ~ 1 0
74 LEDA 404440 G 08 37 22.914 -55 57 31.12           ~ 3 0
75 LEDA 2791032 G 08 37 23.6 -55 52 42           ~ 3 0
76 [HKB2024] 15 G 08 37 27 -55 45.8           ~ 1 0
77 [HKB2024] 72 G 08 37 29 -55 50.5           ~ 1 0
78 [HKB2024] 39 G 08 37 29 -55 33.8           ~ 1 0
79 [HKB2024] 33 G 08 37 33 -55 37.8           ~ 1 0
80 [HKB2024] 35 G 08 37 35 -55 37.2           ~ 1 0
81 [HKB2024] 31 G 08 37 35 -55 39.8           ~ 1 0
82 [HKB2024] 40 G 08 37 36 -55 33.7           ~ 1 0
83 [HKB2024] 42 G 08 37 44 -55 30.2           ~ 1 0
84 [HKB2024] 73 G 08 37 45 -55 50.0           ~ 1 0
85 [HKB2024] 71 G 08 37 48 -55 50.6           ~ 1 0
86 [HKB2024] 70 G 08 37 48 -55 51.9           ~ 1 0
87 [HKB2024] 43 G 08 37 48 -55 27.5           ~ 1 0
88 [HKB2024] 75 G 08 37 50 -55 47.6           ~ 1 0
89 [HKB2024] 30 G 08 37 51 -55 41.0           ~ 1 0
90 LEDA 407781 G 08 37 56.6293831512 -55 35 44.381044068           ~ 3 0
91 [HKB2024] 36 G 08 37 59 -55 38.5           ~ 1 0
92 [HKB2024] 74 G 08 38 00 -55 47.5           ~ 1 0
93 [HKB2024] 32 G 08 38 01 -55 41.2           ~ 1 0
94 [HKB2024] 37 G 08 38 08 -55 38.6           ~ 1 0
95 LEDA 2791051 G 08 38 11.3975398632 -55 40 05.580164532           ~ 3 0
96 [HKB2023] VC05 ClG 08 39.1 -57 28           ~ 2 0
97 [HKB2023] VC08 ClG 08 58.2 -57 45           ~ 2 0
98 [HKB2023] VC11b ClG 09 55 29.28 -43 52 30.0           ~ 2 0
99 [HKB2023] VC11 ClG 09 56.0 -43 53           ~ 2 0
100 [HKB2023] VC11a ClG 09 56 52.80 -43 56 24.0           ~ 2 0
101 NAME Vela Supercluster SCG 10 53.0 +02 44           ~ 54 0
102 NAME Virgo Cluster ClG 12 30 47.8 +12 23 07           ~ 7107 0
103 ACO 1656 ClG 12 59 44.40 +27 54 44.9           ~ 5141 2
104 NAME Shapley Supercluster SCG 13 06.0 -33 04           ~ 677 0
105 ACO 3627 ClG 16 14 22.5 -60 52 07           ~ 340 2

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