J/A+A/658/A59 Extended galaxy clusters from RXGCC (Xu+, 2022)
Catalog of X-ray selected extended galaxy clusters from the
ROSAT All-Sky Survey (RXGCC).
Xu W., Ramos-Ceja M.E., Pacaud F., Reiprich T.H., Erben T.
<Astron. Astrophys. 658, A59 (2022)>
=2022A&A...658A..59X 2022A&A...658A..59X (SIMBAD/NED BibCode)
ADC_Keywords: Clusters, galaxy ; Surveys ; X-ray sources
Keywords: surveys - galaxies: clusters: general - cosmological parameters -
X-rays: galaxies: cluster
Abstract:
There is a known tension between cosmological parameter constraints
obtained from the primary cosmic microwave background (CMB) and
those from galaxy cluster samples. One possible explanation for this
discrepancy could be that the incompleteness of detected clusters is
higher than estimated, and certain types of groups or clusters of
galaxy have been missed in the past.
We aim to search for galaxy groups and clusters with particularly
extended surface brightness distributions, by creating a new X-ray
selected catalog of extended galaxy clusters from the ROSAT All-Sky
Survey (RASS), using a dedicated source detection and characterization
algorithm optimized for extended sources.
Our state-of-the-art algorithm includes multi-resolution filtering,
source detection and characterization. Through extensive simulations,
the detection efficiency and sample purity are investigated. Previous
cluster catalogs in X-ray and other wave-bands, as well as
spectroscopic and photometric redshifts of galaxies are used for the
cluster identification.
We report a catalog of galaxy clusters at high galactic latitude based
on the ROSAT All-sky Survey, named as RASS-based extended X-ray Galaxy
Cluster Catalog (RXGCC), which includes 944 groups and clusters. Out
of this number, 641 clusters have been identified through
intra-cluster medium (ICM) emission previously (Bronze), 154 known
optical and infrared clusters are detected as X-ray clusters for the
first time (Silver), and 149 identified as clusters for the first
time (Gold). Based on 200 simulations, the contamination ratio of the
detections which were identified as clusters by ICM emission, and the
detections which were identified as optical and infrared clusters in
previous work is 0.008 and 0.100, respectively. Compared with Bronze
sample, the Gold+Silver sample is less luminous, less massive, and has
a flatter surface brightness profile. Specifically, the median flux in
[0.1-2.4]keV band for Gold + Silver and Bronze sample is
2.496x10-12erg/s/cm2 and 4.955x10-12erg/s/cm2,
respectively. The median value of β (the slope of cluster surface
brightness profile) is 0.76 and 0.83 for Gold + Silver and Bronze
sample, respectively. This whole sample is available at
https://github.com/wwxu/rxgcc.github.io/blob/master/table_rxgcc.fits.
Description:
File rxgcc.dat contains galaxy clusters in the RXGCC catalog,
including their coordinates, redshift, extent, and so on. This catalog
is an X-ray selected catalog of extended galaxy clusters from the
ROSAT All-Sky Survey (RXGCC)
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table3.dat 509 944 Galaxy clusters in the RXGCC catalog
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See also:
IX/29 : ROSAT All-Sky Survey Faint Source Catalog (Voges+ 2000)
J/A+A/588/A103 : Second ROSAT all-sky survey (2RXS) source catalog
(Boller+, 2016)
Byte-by-byte Description of file: table3.dat
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Bytes Format Units Label Explanations
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1- 3 I3 --- RXGCC [1/944] RXGCC identification number
5- 11 F7.3 deg RAdeg Right ascension (J2000)
13- 19 F7.3 deg DEdeg Declination (J2000)
21- 26 F6.2 arcmin Ext Extent
28- 35 F8.2 --- Extml Extension likelihood
37- 42 F6.4 --- z Redshift
44- 49 F6.4 --- e_z 1 sigma error of redshift
51- 59 A9 --- r_z Redshift source (1)
61 A1 --- Class [GBS] Type of source (2)
63- 96 A34 --- GCXSZ Previously ICM-identified clusters within
0.5Mpc, 15arcmin and Deltaz<0.01 (3)
98-115 A18 --- GCOPT Clusters detected in optical or infrared
band within 0.5Mpc, 15arcmin and
Deltaz< 0.01 (4)
117-167 A51 --- GC* Abell clusters and ICM-detected clusters
within 0.5 Mpc and 15arcmin,
regardless of their redshifts
169-174 F6.3 arcmin Rsig Significant radius
176-181 F6.3 arcmin R500* Cluster size in the unit of arcmin
183-187 F5.3 Mpc R500 Cluster size in the unit of Mpc
189-194 F6.3 ct/s CRsig Count rate in Rsig
196-200 F5.3 ct/s e_CRsig Uncertainty in CRsig
202-207 F6.3 ct/s CR500 Count rate in R500
209-213 F5.3 ct/s e_CR500 Uncertainty in R500
215-220 F6.3 10+35W L500 X-ray luminosity in rest-frame of
0.1-2.4keV (in 10+44erg/s)
222-227 F6.3 10+35W e_L500 1 sigma error of L500 (in 10+44erg/s)
229-235 F7.3 10-15W/m2 F500 Cluster flux in rest-frame of 0.1-2.4keV
(in 10-12erg/s/cm2)
237-242 F6.3 10-15W/m2 e_F500 1 sigma error of F500
(in 10-12erg/s/cm2)
244-248 F5.2 10+14Msun M500 Cluster mass
250-254 F5.2 10+14Msun e_M500 1 sigma error of M500
256-260 F5.2 keV TX Cluster temperature
262-265 F4.2 keV e_TX 1 sigma error of Tx
267-272 F6.1 --- CRpsig Photon-count in Rsig
274 I1 --- EdgeRsig [0/1] Existence of tile edge in Rsig,
1 = yes, 0 = no
276-279 F4.2 --- Beta Slope of cluster brightness profile
281-284 F4.2 --- e_Beta 1 sigma of Beta (lower value)
286-289 F4.2 --- E_Beta 1 sigma of Beta (higher value)
291-296 F6.3 arcmin Rc Core radius of cluster
298-302 F5.3 arcmin e_Rc 1 sigma of Rc (lower value)
304-308 F5.3 arcmin E_Rc 1 sigma of Rc (upper value)
310-509 A200 --- Com Comments
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Note (1): Source of the redshift as follows:
z1 = redshift comes from the highest peak of the redshift histogram of
galaxies
z2 = second highest peak
z_opt = redshift of candidate matches with or comes from (when no "z1" nor
"z2" available) the previous identified optical clusters .
z_xsz = redshift of candidate matches with or comes from (when no "z1" nor
"z2" available) the previous identified ICM-detected clusters.
Note (2): Classification as follows:
B = short for Bronze, clusters have been identified through intra-cluster
medium (ICM) emission previously
S = short for Silver, known optical and infrared clusters, and detected
as X-ray clusters for the first time
G = short for Gold, identified as clusters for the first time
Note (3): Code as follows:
F20 = Finoguenov et al., 2020A&A...638A.114F 2020A&A...638A.114F, Cat. J/A+A/638/A114
Tak = Takey et al., 2011A&A...534A.120T 2011A&A...534A.120T, Cat. J/A+A/534/A120;
2013A&A...558A..75T 2013A&A...558A..75T, Cat. J/A+A/558/A75;
2014A&A...564A..54T 2014A&A...564A..54T, Cat. J/A+A/564/A54;
22016A&A...594A..32T, Cat. J/A+A/594/A32
SPI = Clerc et al., 2012MNRAS.423.3561C 2012MNRAS.423.3561C, Cat. J/MNRAS/423/3561;
Clerc et al., 2016MNRAS.463.4490C 2016MNRAS.463.4490C;
Clerc et al., 2020MNRAS.497.3976C 2020MNRAS.497.3976C;
Kirkpatrick et al., 2021MNRAS.503.5763K 2021MNRAS.503.5763K
XLSSC = Pacaud et al., 2016A&A...592A...2P 2016A&A...592A...2P, Cat. IX/49
SWXCS = Liu et al., 2015ApJS..216...28L 2015ApJS..216...28L, Cat. J/ApJS/216/28
XCS = Mehrtens et al., 2012MNRAS.423.1024M 2012MNRAS.423.1024M, Cat. J/MNRAS/423/1024
MCXC = Piffaretti et al., 2011A&A...534A.109P 2011A&A...534A.109P, Cat. J/A+A/534/A109
L03 = Ledlow et al., 2003AJ....126.2740L 2003AJ....126.2740L, Cat. J/AJ/126/2740
XB = XBACs, Ebeling et al., 1996MNRAS.281..799E 1996MNRAS.281..799E, Cat. J/MNRAS/281/799
Tar = Tarrio et al., 2018A&A...614A..82T 2018A&A...614A..82T, Cat. J/A+A/614/A82;
2019A&A...626A...7T 2019A&A...626A...7T, Cat. J/A+A/626/A7
H18 = Hilton et al., 2018ApJS..235...20H 2018ApJS..235...20H
PSZ2 = Planck Collaboration et al., 2016A&A...594A..27P 2016A&A...594A..27P, Cat. J/A+A/594/A27
B15 = Bleem et al., 2015ApJS..216...27B 2015ApJS..216...27B, Cat. J/ApJS/216/27
H13 = Hasselfield et al, J. Cosmology Astropart. Phys., 7, 008
M11 = Marriage et al., 2011ApJ...737...61M 2011ApJ...737...61M
Note (4): Code as follows:
C = CAMIRA, Oguri, 2014MNRAS.444..147O 2014MNRAS.444..147O, Cat. J/MNRAS/444/147;
Oguri et al., 2018PASJ...70S..20O 2018PASJ...70S..20O, Cat. J/PASJ/70/S20
Zw = Zwicky & Kowal 1968, Cat. VII/4
RM = redMaPPer, Rykoff et al., 2014ApJ...785..104R 2014ApJ...785..104R, Cat. J/ApJ/785/104;
2016ApJS..224....1R 2016ApJS..224....1R, Cat. J/ApJS/224/1
W = Wen et al.. 2012ApJS..199...34W 2012ApJS..199...34W, Cat. J/ApJS/199/34;
Wen & Han, 2015ApJ...807..178W 2015ApJ...807..178W, Cat. J/ApJ/807/178;
Wen et al., 2018MNRAS.475..343W 2018MNRAS.475..343W, Cat. J/MNRAS/475/343
A = Abell, 1958ApJS....3..211A 1958ApJS....3..211A, Cat. VII/4;
Abell et al., 1989ApJS...70....1A 1989ApJS...70....1A, Cat. VII/110
N = or clusters from NED database
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Acknowledgements:
Weiwei Xu, wwxu(at)pku.edu.cn
(End) Weiwei Xu [PKU], Patricia Vannier [CDS] 29-Oct-2021