2013MNRAS.429.3272C

Query : 2013MNRAS.429.3272C

2013MNRAS.429.3272C - Mon. Not. R. Astron. Soc., 429, 3272-3287 (2013/March-2)

The extended ROSAT-ESO flux-limited X-ray galaxy cluster survey (REFLEX II) - III. Construction of the first flux-limited supercluster sample.

CHON G., BOHRINGER H. and NOWAK N.

Abstract (from CDS):

We present the first supercluster catalogue constructed with the extended ROSAT-ESO Flux-Limited X-ray (REFLEX II) Galaxy Cluster survey data, which comprises 919 X-ray selected galaxy clusters with a flux limit of 1.8 x 10-12 erg/s/cm2. Based on this cluster catalogue we construct a supercluster catalogue using a friends-of-friends algorithm with a linking length depending on the (local) cluster density, which thus varies with redshift. The resulting catalogue comprises 164 superclusters at redshift z ≤ 0.4.

The choice of the linking length in the friends-of-friends method modifies the properties of the superclusters. We study the properties of different catalogues such as the distributions of the redshift, extent and multiplicity by varying the choice of parameters. In addition to the supercluster catalogue for the entire REFLEX II sample, we compile a large volume-limited cluster sample from REFLEX II with the redshift and luminosity constraints of z ≤ 0.1 and LX ≥ 5x1043erg/s. With this catalogue we construct a volume-limited sample of superclusters. This sample is built with a homogeneous linking length, and hence selects effectively the same type of superclusters. By increasing the luminosity cut we can build a hierarchical tree structure of the volume-limited samples, where systems at the top of the tree are only formed via the most luminous clusters. This allows us to test if the same superclusters are found when only the most luminous clusters are visible, comparable to the situation at higher redshift in the REFLEX II sample. We find that the selection of superclusters is very robust, independent of the luminosity cut, and the contamination of spurious superclusters among cluster pairs is expected to be small.

Numerical simulations and observations of the substructure of clusters suggest that regions of high cluster number density provide an astrophysically different environment for galaxy clusters, where the mass function and X-ray luminosity function are shifted to higher cut-off values and an increased merger rate may also boost some of the cluster X-ray luminosities. We therefore compare the X-ray luminosity function for the clusters in superclusters with that for the field clusters with the flux- and volume-limited catalogues. The results mildly support the theoretical suggestion of a top-heavy X-ray luminosity function of galaxy clusters in regions of high cluster density.


Abstract Copyright: © 2013 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society (2013)

Journal keyword(s): galaxies: clusters: general - large-scale structure of Universe - x-rays: galaxies: clusters

VizieR on-line data: <Available at CDS (J/MNRAS/429/3272): table2.dat tableb1.dat>

Nomenclature: Tables 2, B1: RXSC JHHMM+DDMM N=31+164.

Simbad objects: 185

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Number of rows : 185
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 RXSC J0006-3442 SCG 00 06 15 -34 42.1           ~ 1 0
2 RXSC J0006-3414 SCG 00 06 41 -34 14.1           ~ 1 0
3 RXSC J0011-3557 SCG 00 11 55 -35 57.4           ~ 1 0
4 RXSC J0013-2639 SCG 00 13 37 -26 39.8           ~ 1 0
5 RXSC J0013-1915 SCG 00 13 49 -19 15.7           ~ 1 0
6 RXSC J0015-3518 SCG 00 15 44 -35 18.7           ~ 1 0
7 RXSC J0022-1745 SCG 00 22 55 -17 45.1           ~ 1 0
8 RXSC J0024-2512 SCG 00 24 03 -25 12.2           ~ 1 0
9 RXSC J0026-2031 SCG 00 26 34 -20 31.7           ~ 1 0
10 RXSC J0034-0014 SCG 00 34 10 -00 14.6           ~ 1 0
11 RXSC J0044-2727 SCG 00 44 34 -27 27.7           ~ 1 0
12 RXSC J0055-1341 SCG 00 55 24 -13 41.3           ~ 1 0
13 RXSC J0058-7954 SCG 00 58 08 -79 54.5           ~ 1 0
14 RXSC J0059-2143 SCG 00 59 09 -21 43.4           ~ 1 0
15 RXSC J0100-5004 SCG 01 00 13 -50 04.3           ~ 1 0
16 RXSC J0104-1508 SCG 01 04 35 -15 08.1           ~ 1 0
17 RXSC J0105-0019 SCG 01 05 22 -00 19.0           ~ 1 0
18 RXSC J0105-0016 SCG 01 05 59 -00 16.6           ~ 1 0
19 RXSC J0107-5612 SCG 01 07 17 -56 12.2           ~ 1 0
20 RXSC J0110-4932 SCG 01 10 12 -49 32.0           ~ 1 0
21 RXSC J0111-2548 SCG 01 11 43 -25 48.2           ~ 1 0
22 RXSC J0112-1441 SCG 01 12 54 -14 41.2           ~ 1 0
23 RXSC J0121-2055 SCG 01 21 59 -20 55.6           ~ 1 0
24 RXSC J0125-0013 SCG 01 25 37 -00 13.0           ~ 1 0
25 RXSC J0126-1758 SCG 01 27 00 -17 58.2           ~ 1 0
26 RXSC J0134-1318 SCG 01 34 09 -13 18.5           ~ 1 0
27 RXSC J0153-0005 SCG 01 53 06 -00 06.0           ~ 1 0
28 RXSC J0205-2929 SCG 02 05 46 -29 29.5           ~ 1 0
29 RXSC J0210-4628 SCG 02 10 01 -46 28.2           ~ 1 0
30 RXSC J0223-4018 SCG 02 23 32 -40 19.0           ~ 1 0
31 RXSC J0229-3320 SCG 02 29 59 -33 20.6           ~ 1 0
32 RXSC J0234-1317 SCG 02 34 05 -13 17.5           ~ 1 0
33 RXSC J0236-2755 SCG 02 36 17 -27 55.7           ~ 1 0
34 RXSC J0241-0405 SCG 02 41 21 -04 05.0           ~ 1 0
35 RXSC J0246-0030 SCG 02 46 26 -00 30.2           ~ 1 0
36 RXSC J0248-2148 SCG 02 48 53 -21 48.3           ~ 1 0
37 RXSC J0305-2811 SCG 03 05 22 -28 11.8           ~ 1 0
38 RXSC J0309-2519 SCG 03 09 53 -25 19.6           ~ 1 0
39 RXSC J0321-4528 SCG 03 21 06 -45 28.3           ~ 1 0
40 RXSC J0321-4345 SCG 03 21 14 -43 45.9           ~ 1 0
41 RXSC J0321-2857 SCG 03 21 34 -28 57.8           ~ 1 0
42 RXSC J0326-5455 SCG 03 26 33 -54 55.7           ~ 1 0
43 RXSC J0326-4012 SCG 03 26 34 -40 12.1           ~ 1 0
44 RXSC J0335-0157 SCG 03 35 14 -01 57.4           ~ 1 0
45 RXSC J0338-5414 SCG 03 38 00 -54 14.7           ~ 2 0
46 RXSC J0342-2241 SCG 03 42 24 -22 41.2           ~ 1 0
47 RXSC J0344-0249 SCG 03 44 18 -02 49.6           ~ 1 0
48 RXSC J0357-5702 SCG 03 57 18 -57 02.9           ~ 1 0
49 RXSC J0403-5408 SCG 04 03 42 -54 09.0           ~ 1 0
50 RXSC J0412-0338 SCG 04 12 16 -03 38.9           ~ 1 0
51 RXSC J0419-1328 SCG 04 19 10 -13 28.9           ~ 1 0
52 RXSC J0428+0039 SCG 04 28 54 +00 39.1           ~ 1 0
53 RXSC J0429-1104 SCG 04 29 59 -11 04.2           ~ 1 0
54 RXSC J0435-3830 SCG 04 35 14 -38 30.5           ~ 1 0
55 RXSC J0438-1429 SCG 04 38 58 -14 29.6           ~ 1 0
56 RXSC J0441-0035 SCG 04 41 54 -00 35.6           ~ 1 0
57 RXSC J0444-2109 SCG 04 44 20 -21 09.8           ~ 1 0
58 RXSC J0445-2106 SCG 04 45 18 -21 06.3           ~ 1 0
59 RXSC J0502-0916 SCG 05 02 53 -09 16.9           ~ 1 0
60 RXSC J0504-0032 SCG 05 04 19 -00 32.2           ~ 1 0
61 RXSC J0516-4610 SCG 05 16 53 -46 10.6           ~ 1 0
62 RXSC J0524-4124 SCG 05 24 40 -41 25.0           ~ 1 0
63 RXSC J0526-3009 SCG 05 26 13 -30 09.5           ~ 1 0
64 RXSC J0535-3842 SCG 05 35 50 -38 42.3           ~ 1 0
65 RXSC J0544-2722 SCG 05 44 53 -27 22.3           ~ 1 0
66 RXSC J0549-2111 SCG 05 49 36 -21 11.5           ~ 1 0
67 RXSC J0554-3837 SCG 05 54 31 -38 38.0           ~ 1 0
68 RXSC J0607-5559 SCG 06 07 24 -55 59.1           ~ 1 0
69 RXSC J0609-3454 SCG 06 09 01 -34 54.8           ~ 1 0
70 RXSC J0618-5519 SCG 06 18 29 -55 19.5           ~ 1 0
71 RXSC J0623-4937 SCG 06 23 54 -49 37.0           ~ 1 0
72 RXSC J0624-5319 SCG 06 24 04 -53 19.7           ~ 2 0
73 RXSC J0625-3717 SCG 06 25 01 -37 17.6           ~ 1 0
74 RXSC J0850-0535 SCG 08 50 09 -05 35.7           ~ 1 0
75 RXSC J0913-1044 SCG 09 13 07 -10 44.9           ~ 1 0
76 RXSC J0916-0855 SCG 09 16 39 -08 55.7           ~ 1 0
77 RXSC J0929-1318 SCG 09 29 03 -13 18.0           ~ 1 0
78 RXSC J0933-1704 SCG 09 33 40 -17 04.6           ~ 1 0
79 RXSC J0947-2536 SCG 09 47 12 -25 36.8           ~ 1 0
80 RXSC J0952-1049 SCG 09 52 48 -10 49.3           ~ 1 0
81 RXSC J1002-8242 SCG 10 02 10 -82 42.1           ~ 1 0
82 RXSC J1014-1405 SCG 10 14 34 -14 05.8           ~ 1 0
83 RXSC J1014-0141 SCG 10 14 42 -01 41.1           ~ 1 0
84 RXSC J1025-0934 SCG 10 25 00 -09 34.3           ~ 1 0
85 RXSC J1026-2652 SCG 10 26 30 -26 52.6           ~ 1 0
86 RXSC J1027-0945 SCG 10 27 51 -09 45.5           ~ 1 0
87 RXSC J1106-2210 SCG 11 06 31 -22 10.2           ~ 1 0
88 RXSC J1116+0206 SCG 11 16 14 +02 06.6           ~ 1 0
89 RXSC J1118-3023 SCG 11 18 18 -30 23.9           ~ 1 0
90 RXSC J1131-1334 SCG 11 31 14 -13 34.1           ~ 1 0
91 RXSC J1135-1950 SCG 11 35 26 -19 50.9           ~ 1 0
92 RXSC J1144-1504 SCG 11 44 17 -15 04.7           ~ 1 0
93 RXSC J1145-1620 SCG 11 45 41 -16 20.7           ~ 1 0
94 RXSC J1152-3259 SCG 11 52 33 -32 59.2           ~ 1 0
95 RXSC J1200-0456 SCG 12 00 16 -04 56.3           ~ 1 0
96 RXSC J1210+0137 SCG 12 10 23 +01 37.1           ~ 1 0
97 RXSC J1212-2726 SCG 12 12 54 -27 26.6           ~ 1 0
98 RXSC J1236-3435 SCG 12 36 45 -34 35.5           ~ 1 0
99 RXSC J1237-3429 SCG 12 37 32 -34 29.4           ~ 1 0
100 RXSC J1250-1529 SCG 12 50 22 -15 29.6           ~ 1 0
101 RXSC J1254-1045 SCG 12 54 07 -10 45.8           ~ 1 0
102 RXSC J1255-3012 SCG 12 55 14 -30 12.2           ~ 1 0
103 RXSC J1255-1638 SCG 12 55 36 -16 39.0           ~ 1 0
104 RXSC J1302-2353 SCG 13 02 48 -23 53.9           ~ 1 0
105 RXSC J1303-0650 SCG 13 03 40 -06 50.8           ~ 1 0
106 RXSC J1305-0221 SCG 13 05 48 -02 21.2           ~ 1 0
107 RXSC J1310-0218 SCG 13 10 59 -02 18.5           ~ 1 0
108 RXSC J1316-3439 SCG 13 16 05 -34 39.5           ~ 1 0
109 RXSC J1318-3055 SCG 13 18 07 -30 55.4           ~ 1 0
110 RXSC J1328-3233 SCG 13 28 52 -32 33.4           ~ 2 0
111 RXSC J1333-2526 SCG 13 33 51 -25 26.1           ~ 1 0
112 RXSC J1349-3334 SCG 13 49 18 -33 34.6           ~ 2 0
113 RXSC J1403-1040 SCG 14 03 52 -10 40.7           ~ 1 0
114 RXSC J1411-1242 SCG 14 11 46 -12 42.7           ~ 1 0
115 RXSC J1435-2821 SCG 14 35 31 -28 21.4           ~ 1 0
116 RXSC J1502-0333 SCG 15 02 12 -03 33.3           ~ 1 0
117 RXSC J1504-0954 SCG 15 04 59 -09 54.1           ~ 1 0
118 RXSC J1505-1709 SCG 15 05 17 -17 09.3           ~ 1 0
119 RXSC J1506-0402 SCG 15 06 51 -04 02.5           ~ 1 0
120 RXSC J1514-2503 SCG 15 14 02 -25 04.0           ~ 1 0
121 RXSC J1515-0044 SCG 15 15 16 -00 44.3           ~ 1 0
122 RXSC J1522-1012 SCG 15 22 38 -10 12.6           ~ 1 0
123 RXSC J1537-0220 SCG 15 37 29 -02 21.0           ~ 1 0
124 RXSC J1555-0234 SCG 15 55 13 -02 34.0           ~ 1 0
125 RXSC J1614-8311 SCG 16 14 31 -83 11.6           ~ 1 0
126 RXSC J1616-0542 SCG 16 16 22 -05 42.5           ~ 1 0
127 RXSC J1657-0148 SCG 16 57 55 -01 48.5           ~ 1 0
128 RXSC J1704-0115 SCG 17 04 15 -01 15.8           ~ 1 0
129 RXSC J1857-6605 SCG 18 57 30 -66 05.4           ~ 1 0
130 RXSC J1913-5042 SCG 19 13 57 -50 42.4           ~ 1 0
131 RXSC J1928-4155 SCG 19 28 02 -41 55.7           ~ 1 0
132 RXSC J1940-4931 SCG 19 40 10 -49 31.6           ~ 1 0
133 RXSC J1941-4642 SCG 19 41 08 -46 42.7           ~ 1 0
134 RXSC J1950-5156 SCG 19 50 41 -51 56.5           ~ 1 0
135 RXSC J1956-7336 SCG 19 56 46 -73 36.8           ~ 1 0
136 RXSC J1957-4405 SCG 19 57 14 -44 05.4           ~ 1 0
137 RXSC J2002-5518 SCG 20 02 24 -55 18.4           ~ 1 0
138 RXSC J2009-3949 SCG 20 09 06 -39 49.3           ~ 1 0
139 RXSC J2009-5513 SCG 20 09 41 -55 13.9           ~ 1 0
140 RXSC J2011-3116 SCG 20 11 17 -31 16.7           ~ 1 0
141 RXSC J2013-5542 SCG 20 13 19 -55 42.3           ~ 1 0
142 RXSC J2014-2500 SCG 20 14 20 -25 00.4           ~ 1 0
143 RXSC J2015-8042 SCG 20 15 08 -80 42.8           ~ 1 0
144 RXSC J2019-0655 SCG 20 19 29 -06 55.2           ~ 1 0
145 RXSC J2023-3915 SCG 20 23 39 -39 15.7           ~ 1 0
146 RXSC J2032-5443 SCG 20 32 12 -54 43.2           ~ 1 0
147 RXSC J2036-3505 SCG 20 36 16 -35 05.3           ~ 1 0
148 RXSC J2037-3630 SCG 20 37 39 -36 31.0           ~ 1 0
149 RXSC J2039-2143 SCG 20 39 34 -21 43.8           ~ 1 0
150 RXSC J2059-4313 SCG 20 59 47 -43 13.5           ~ 1 0
151 RXSC J2101-2557 SCG 21 01 37 -25 57.4           ~ 1 0
152 RXSC J2102-1258 SCG 21 02 34 -12 58.5           ~ 1 0
153 RXSC J2103-0823 SCG 21 03 57 -08 23.0           ~ 1 0
154 RXSC J2103-4030 SCG 21 03 58 -40 30.3           ~ 1 0
155 RXSC J2104-2249 SCG 21 04 32 -22 49.3           ~ 1 0
156 RXSC J2128-7340 SCG 21 28 15 -73 40.4           ~ 1 0
157 RXSC J2130-2359 SCG 21 30 28 -23 59.1           ~ 1 0
158 RXSC J2135+0055 SCG 21 35 29 +00 55.8           ~ 1 0
159 RXSC J2143-4344 SCG 21 43 19 -43 44.4           ~ 1 0
160 RXSC J2147-4449 SCG 21 47 22 -44 49.1           ~ 1 0
161 RXSC J2150-5632 SCG 21 50 49 -56 32.6           ~ 1 0
162 RXSC J2152-1815 SCG 21 52 15 -18 15.0           ~ 1 0
163 RXSC J2152-5641 SCG 21 52 15 -56 41.6           ~ 1 0
164 RXSC J2152-1937 SCG 21 52 20 -19 37.5           ~ 1 0
165 RXSC J2201-1020 SCG 22 01 48 -10 20.9           ~ 1 0
166 RXSC J2201-0603 SCG 22 01 50 -06 03.1           ~ 1 0
167 RXSC J2202-2202 SCG 22 02 42 -22 03.0           ~ 1 0
168 RXSC J2206-5559 SCG 22 06 59 -55 59.1           ~ 1 0
169 RXSC J2211-0727 SCG 22 11 09 -07 27.8           ~ 1 0
170 RXSC J2221-0333 SCG 22 21 45 -03 33.9           ~ 1 0
171 RXSC J2222-2938 SCG 22 22 36 -29 38.8           ~ 1 0
172 RXSC J2223-3649 SCG 22 23 54 -36 49.1           ~ 1 0
173 RXSC J2226-6452 SCG 22 26 51 -64 52.4           ~ 1 0
174 RXSC J2228-5200 SCG 22 28 06 -52 00.1           ~ 1 0
175 RXSC J2235-6442 SCG 22 35 50 -64 42.4           ~ 1 0
176 RXSC J2246-1812 SCG 22 46 17 -18 12.5           ~ 1 0
177 RXSC J2247-3211 SCG 22 47 19 -32 11.8           ~ 1 0
178 RXSC J2306-1319 SCG 23 06 54 -13 19.5           ~ 1 0
179 RXSC J2308-0205 SCG 23 08 22 -02 05.0           ~ 1 0
180 RXSC J2316-2137 SCG 23 16 07 -21 37.4           ~ 1 0
181 RXSC J2318-7350 SCG 23 18 36 -73 51.0           ~ 1 0
182 RXSC J2348-0702 SCG 23 48 39 -07 02.9           ~ 1 0
183 RXSC J2350-2650 SCG 23 50 44 -26 50.6           ~ 1 0
184 RXSC J2357-3000 SCG 23 57 50 -30 00.3           ~ 1 0
185 RXSC J2358-0203 SCG 23 58 11 -02 03.7           ~ 1 0

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