J/PASP/132/B4101 Galaxy Clusters from SCUSS (Gao+, 2020)
A catalog of galaxy clusters identified from SCUSS, SDSS, and UNWISE.
Gao J., Zou H., Zhou X., Kong X.
<Publ. Astron. Soc. Pac., 132, b4101 (2020)>
=2020PASP..132b4101G 2020PASP..132b4101G (SIMBAD/NED BibCode)
ADC_Keywords: Clusters, galaxy ; Redshifts ; Optical ; Infrared
Abstract:
This paper presents the identification of galaxy clusters from the
photometric redshift catalog based on three imaging surveys of SCUSS,
Sloan Digital Sky Survey, and unWISE. By applying a fast clustering
algorithm, we obtain a total of 19610 clusters in the redshift range
of 0.05<z<0.65 over a sky area of about 3700 deg2 in the south
Galactic gap. Monte Carlo simulations show that the false detection
rate is about 8.9%. The redshift uncertainty is estimated to be about
0.013. The mass and richness of detected clusters are derived through
the calibration based on the measurements of X-ray emission and
Sunyaev-Zel'dovich effect. The median mass is 1.2x1014M☉.
Description:
We use the photometric redshift catalog based on South Galactic Cap
u-band Sky Survey (SCUSS; Zhou et al. 2016RAA....16...69Z 2016RAA....16...69Z,
2016AJ....151...37Z 2016AJ....151...37Z) SDSS and unWISE (Lang 2014AJ....147..108L 2014AJ....147..108L; Lang
et al. 2016AJ....151...36L 2016AJ....151...36L) to identify the galaxy clusters. The
catalog include 19610 galaxy clusters.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 79 19610 Galaxy cluster catalog
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See also:
II/311 : WISE All-Sky Data Release (Cutri+ 2012)
V/147 : The SDSS Photometric Catalogue, Release 12 (Alam+, 2015)
J/ApJ/862/12 : Photometric Redshift Catalog (SCUSS, SDSS, WISE) (Gao+, 2018)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 5 I5 --- Name [0/19609] Cluster order number
7- 15 F9.5 deg RAdeg Right ascension (J2000) of the BCG
17- 25 F9.5 deg DEdeg Declination (J2000) of the BCG
27- 32 F6.4 --- zph Photometric redshift of the BCG
34- 42 F9.5 --- zsp ?=-10 Spectroscopic redshift of the BCG
if existing (or else -10)
44- 50 F7.5 --- zphmedian Median photometric redshift of
member galaxies
52- 54 I3 --- N1Mpc Number of member galaxies around BCG galaxy
within a radius of 1Mpc
56- 63 F8.5 Lsun L1Mpc The integrated luminosity of the member
galaxies around BCG galaxy within a
radius of 1Mpc
65- 73 F9.5 --- Richness Estimated richness
75- 79 F5.2 10+14Msun M500 Estimated cluster mass within the
characteristic radius (1)
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Note (1): The characteristic radius is defined as the radius within which the
mean mass density is 500 times that of the critical cosmic mass.
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History:
From Hu Zou, zouhu(at)nao.cas.cn
Acknowledgements:
This work is supported by the Chinese National Natural Science
Foundation (grant Nos. 11433005, 11673027, 11733007), the National
Basic Research Program of China (973 Program; grant Nos. 2015CB857004,
2014CB845704, 2014CB845702, and 2013CB834902), and the External
Cooperation Program of Chinese Academy of Sciences (grant No.
114A11KYSB20160057). This work is also supported by Major Program of
National Natural Science Foundation of China (No. 11890691).
(End) Patricia Vannier [CDS] 29-Feb-2024