SIMBAD references

2007A&A...461...81O - Astronomy and Astrophysics, volume 461, 81-93 (2007/1-1)

Galaxy clusters in the CFHTLS. First matched filter candidate catalogue of the Deep fields.

OLSEN L.F., BENOIST C., CAPPI A., MAUROGORDATO S., MAZURE A., SLEZAK E., ADAMI C., FERRARI C. and MARTEL F.

Abstract (from CDS):

We apply a matched-filter cluster detection algorithm to the Canada-France-Hawaii Telescope Legacy Survey (CFHTLS) i-band data for the Deep-1, Deep-2, Deep-3 and Deep-4 fields covering a total of 4 square degrees. To test the implemented procedure we carry out simulations for assessing the frequency of noise peaks as well as estimate the recovery efficiency. We estimate that up to z∼0.7 the catalogue is essentially complete for clusters of richness class R>1. The recovered redshifts are in general overestimated by Δz=0.1 with a scatter of σΔz∼0.1, except at redshifts z>1 where the estimated redshifts are systematically underestimated. The constructed cluster candidate catalogue contains 162 detections over an effective area of 3.112 square degrees corresponding to a density of ∼52.1 per square degree. The median estimated redshift of the candidates is z=0.6. The estimated noise frequency is 16.9±5.4 detections per square degree. From visual inspection we identify systems that show a clear concentration of galaxies with similar colour. These systems have a density of ∼20 per square degree.

Abstract Copyright:

Journal keyword(s): methods: data analysis - surveys - galaxies: clusters: general - cosmology: large-scale structure of Universe

VizieR on-line data: <Available at CDS (J/A+A/461/81): table3.dat>

Nomenclature: Table 3: CFHTLS-CL JHHMMSS+DDMMSS N=169.

Errata: erratum vol. 478, p. 93 (2008)

Status at CDS:   All or part of tables of objects could be ingested in SIMBAD with priority 2.

Simbad objects: 18

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