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J/A+A/509/A81  Candidate clusters detected in six CFHTLS fields   (Adami+, 2010)

Galaxy structure searches by photometric redshifts in the CFHTLS. Adami C., Durret F., Benoist C., Coupon J., Mazure A., Meneux B., Ilbert O., Blaizot J., Arnouts S., Cappi A., Garilli B., Guennou L., Lebrun V., Lefevre O., Maurogordato S., McCracken H.J., Mellier Y., Slezak E., Tresse L., Ulmer M.P. <Astron. Astrophys., 509, A81 (2010)> =2010A&A...509A..81A
ADC_Keywords: Surveys ; Clusters, galaxy ; Redshifts Keywords: surveys - galaxies: clusters: general - large-scale structure of Universe Abstract: Counting clusters is one of the methods to constrain cosmological parameters, but has been limited up to now both by the redshift range and by the relatively small sizes of the homogeneously surveyed areas. In order to enlarge publicly available optical cluster catalogs, in particular at high redshift, we have performed a systematic search for clusters of galaxies in the Canada France Hawaii Telescope Legacy Survey (CFHTLS). We considered the deep 2, 3 and 4 CFHTLS Deep fields (each 1x1deg2), as well as the wide 1, 3 and 4 CFHTLS Wide fields. We used the Le Phare photometric redshifts for the galaxies detected in these fields with magnitude limits of i'=25 and 23 for the Deep and Wide fields respectively. We then constructed galaxy density maps in photometric redshift bins of 0.1 based on an adaptive kernel technique and detected structures with SExtractor at various detection levels. In order to assess the validity of our cluster detection rates, we applied a similar procedure to galaxies in Millennium simulations. We measured the correlation function of our cluster candidates. We analyzed large scale properties and substructures, including filaments, by applying a minimal spanning tree algorithm both to our data and to the Millennium simulations. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file tablea.dat 37 1200 Candidate clusters detected in the D2, D3, D4, W1, W3 and W4 CFHTLS field (tables A1-A6 of the paper)
See also: J/A+A/461/81 : Galaxy clusters in the CFHTLS (Olsen+, 2007) J/A+A/494/845 : Galaxy clusters in the CFHTLS (Grove+, 2009) Byte-by-byte Description of file: tablea.dat
Bytes Format Units Label Explanations
1- 2 A2 --- Fld CFHTLS field name ( D2, D3, D4, W1, W3 or W4) 4- 6 A3 --- --- [WD1234-] (repetition of field) 7- 9 I3 --- ID Cluster designation, DN-NN or WN-NNN 11- 18 F8.4 deg RAdeg Right ascension in decimal degrees (J2000) 20- 27 F8.4 deg DEdeg Declination in decimal degrees (J2000) 30- 33 F4.2 --- z Mean redshift (photometric) 36- 37 F2.0 --- sigmaS SExtractor detection level
History: From electronic version of the journal
(End) Patricia Vannier [CDS] 24-Apr-2010
The document above follows the rules of the Standard Description for Astronomical Catalogues.From this documentation it is possible to generate f77 program to load files into arrays or line by line

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