2011A&A...535A..65D


Query : 2011A&A...535A..65D

2011A&A...535A..65D - Astronomy and Astrophysics, volume 535A, 65-65 (2011/11-1)

Galaxy cluster searches based on photometric redshifts in the four CFHTLS wide fields.

DURRET F., ADAMI C., CAPPI A., MAUROGORDATO S., MARQUEZ I., ILBERT O., COUPON J., ARNOUTS S., BENOIST C., BLAIZOT J., EDORH T.M., GARILLI B., GUENNOU L., LE BRUN V., LE FEVRE O., MAZURE A., McCRACKEN H.J., MELLIER Y., MEZRAG C., SLEZAK E., TRESSE L. and ULMER M.P.

Abstract (from CDS):

Cosmological parameters can be constrained by counting clusters of galaxies as a function of mass and redshift and by considering regions of the sky sampled as deeply and as homogeneously as possible. Several methods for detecting clusters in large imaging surveys have been developed, among which the one used here, which is based on detecting structures. This method was first applied to the Canada France Hawaii Telescope Legacy Survey (CFHTLS) Deep 1 field by Mazure et al. (2007, A&A, 467, 49), then to all the Deep and Wide CFHTLS fields available in the T0004 data release by Adami et al. (2010A&A...509A..81A). The validity of the cluster detection rate was estimated by applying the same procedure to galaxies from the Millennium simulation. Here we use the same method to analyse the full CFHTLS Wide survey, based on the T0006 data release. Our method is based on the photometric redshifts computed with Le Phare for all the galaxies detected in the Wide fields, limited to magnitudes z'≤22.5. We constructed galaxy density maps in photometric redshift bins of 0.1 based on an adaptive kernel technique, detected structures with SExtractor at various detection levels, and built cluster catalogues by applying a minimal spanning tree algorithm. In a total area of 154deg2, we have detected 4061 candidate clusters at 3σ or above (6802 at 2σ and above), in the redshift range 0.1≤z≤1.15, with estimated mean masses between 1.3x1014 and 12.6x1014 M. This catalogue of candidate clusters will be available at the CDS. We compare our detections with those made in various CFHTLS analyses with other methods. By stacking a subsample of clusters, we show that this subsample has typical cluster characteristics (colour-magnitude relation, galaxy luminosity function). We also confirm that the cluster-cluster correlation function is comparable to the one obtained for other cluster surveys and analyse large-scale filamentary galaxy distributions. We have increased the number of known optical high-redshift cluster candidates by a large factor, an important step towards obtaining reliable cluster counts to measure cosmological parameters. The clusters that we detect behave as expected if they are located at the intersection of filaments by which they are fed.

Abstract Copyright:

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

VizieR on-line data: <Available at CDS (J/A+A/535/A65): wide1.dat wide2.dat wide3.dat wide4.dat>

Nomenclature: [DAC2011] WN-NNNN (Nos W1-1 to W1-3247, W2-1 to W2-919, W3-1 to W3-1819, W4-1 to W4-817).

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

Simbad objects: 1

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Number of rows : 1
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2023
#notes
1 ACO 1656 ClG 12 59 48.7 +27 58 50           ~ 4601 2

Query : 2011A&A...535A..65D

Basic data :
ACO 1656 -- Cluster of Galaxies
Origin of the objects types :

(Ref) Object type as listed in the reference "Ref"
(acronym) Object type linked to the acronym according to the original reference
() Anterior to 2007, before we can link the objet type to a reference, or given by the CDS team in some particular cases

Other object types:
ClG (2010A&A,ACO,...), X (2A,3A,...), GrG (RASSCALS,[N93]), gLe (2011A&A), C?G (2014A&A), gam (IGR,INTREF), Rad (DB)
Syntax of coordinates is : "ra dec (wtype) [error ellipse] quality bibcode" :
  • ra dec : right ascension and declination (unit and frame defined according to your Output Options)
    Grey values are increasing the original precision due to the computation of frame transformations
  • (wtype) : wavelength class for the origin of the coordinates (Rad, mm, IR, Optical, UV, Xray, Gam)
  • [error ellipse] : measurement uncertainty, on (ra,dec) if the positional angle is 90 degrees, on (majaxis,minaxis) otherwise (in mas at defined epoch in the original catalogue),
    position angle (in degrees North celestial pole to East)
  • quality : flag of quality
    • E ≥ 10"
    • D : 1-10" (and some old data)
    • C : 0.1-1"
    • B : 0.01-0.1" + 2MASS, Tyc
    • A : VLBI, Hipparcos
  • bibcode : bibcode of the coordinates reference
ICRS coord. (ep=J2000) :
12 59 48.7 +27 58 50 [ ] D 2001ApJ...554L.129M
Syntax of coordinates is : "ra dec (wtype) [error ellipse] quality bibcode" :
  • ra dec : right ascension and declination (unit and frame defined according to your Output Options)
    Grey values are increasing the original precision due to the computation of frame transformations
  • (wtype) : wavelength class for the origin of the coordinates (Rad, mm, IR, Optical, UV, Xray, Gam)
  • [error ellipse] : measurement uncertainty, on (ra,dec) if the positional angle is 90 degrees, on (majaxis,minaxis) otherwise (in mas at defined epoch in the original catalogue),
    position angle (in degrees North celestial pole to East)
  • quality : flag of quality
    • E ≥ 10"
    • D : 1-10" (and some old data)
    • C : 0.1-1"
    • B : 0.01-0.1" + 2MASS, Tyc
    • A : VLBI, Hipparcos
  • bibcode : bibcode of the coordinates reference
FK4 coord. (ep=B1950 eq=1950) :
12 57 24.0 +28 14 59 [ ]
Syntax of coordinates is : "ra dec (wtype) [error ellipse] quality bibcode" :
  • ra dec : right ascension and declination (unit and frame defined according to your Output Options)
    Grey values are increasing the original precision due to the computation of frame transformations
  • (wtype) : wavelength class for the origin of the coordinates (Rad, mm, IR, Optical, UV, Xray, Gam)
  • [error ellipse] : measurement uncertainty, on (ra,dec) if the positional angle is 90 degrees, on (majaxis,minaxis) otherwise (in mas at defined epoch in the original catalogue),
    position angle (in degrees North celestial pole to East)
  • quality : flag of quality
    • E ≥ 10"
    • D : 1-10" (and some old data)
    • C : 0.1-1"
    • B : 0.01-0.1" + 2MASS, Tyc
    • A : VLBI, Hipparcos
  • bibcode : bibcode of the coordinates reference
Gal coord. (ep=J2000) :
058.0791 +87.9577 [ ]
Syntax of radial velocity (or/and redshift) is : "value [error] (wavelength) quality bibcode"
  • value : radial velocity or/and redshift (Heliocentric frame) according to your Output Options
    (redshift may be not displayed if the data value is <0 and the database inside value is a radial velocity)
  • [error] : error of the corresponding value displayed before
  • (wavelength) : wavelength range of the measurement : Rad, mm, IR, Opt, UV, Xray, Gam or  '∼'(unknown)
  • quality : flag of quality ( A=best quality -> E=worst quality, {� } =unknown quality)
  • bibcode : bibcode of the value's origin
Radial velocity / Redshift / cz :
V(km/s) 6933 [~] / z(spectroscopic) 0.0234 [~] / cz 7015 [~]
   (Opt) C 2016ApJ...819...63R
SIMBAD within arcmin
', {sourceSize:12, color:'#30a090'})); aladin.on('objectClicked', function(object) { var objName=object.data.MAIN_ID; aladin.showPopup(object.ra,object.dec,'',''+ objName+''); });" title="Show Simbad objects"> Overlay Simbad points in this preview
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within arcsec The VizieR photometry tool allows for easy visualization of photometry points extracted around the Simbad position from photometry-enabled catalogues in VizieR.
The search radius has to be specified by the user. It is currently limited to a maximum of 30 arcsec. It depends mostly on the precision or quality of the coordinates (SIMBAD and VizieR catalogs), the resolution of the images from which the sources were extracted, source extent, and source crowding.
Suggestions are: crowded field: 0.5 to 1.5 arcsec, 3 arcsec otherwise; uncertain coordinates (SIMBAD quality E or coordinates without reference): 5 to 30 arsec (risky!).
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notes:


Hierarchy : number of linked objects
whatever the membership probability is (see description here ) :

The count displayed here is the number of children objects.
The list obtained by clicking the button may be larger, as some children may be linked with different references or probability.

%This number is the number of distinct objets linked, by using this button, you will obtain all links (may be more than one) from that object to his children

: 2798
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The link on the acronym of the identifiers give access to the information for this acronym in the dictionary of nomenclature.
Identifiers (46) :
An access of full data is available using the icon Vizier near the identifier of the catalogue

ACO 1656 FR 76 PLCKESZ G057.33+88.01 4U 1257+28
2A 1257+283 1H 1257+281 PSZ1 G057.84+87.98 XSS J12596+2759
3A 1257+282 H 1257+283 PSZ2 G057.80+88.00 X Com X-1
BAX 194.9531+27.9807 H 1256+27 PSZRX G057.30+88.00 [B2017] 1599
CAN 90 HMS 1257+2814 RASSCALS NRGb226 [F81] 253
CID 90 IGR J12595+2755 RBS 1198 [KRL2007b] 128
ClG 1257.4+2815 INTREF 534 RXC J1259.7+2756 [KVC2005] 8
DB 88 1M 1257+281 RX J1259.7+2756 [N93] 109
2E 2932 2MAXI J1259+279 1RXS J125947.9+275636 [S85] 222
2E 1257.4+2812 MCXC J1259.7+2756 SWIFT J1259.7+2755 [SPD2011] 67
1ES 1257+28.2 NAME Coma Cluster 2U 1257+28
EXSS 1257.4+2815 PBC J1259.5+2756 3U 1257+28

References (4601 between 1850 and 2023) (Total 4601)
Simbad bibliographic survey began in 1850 for stars (at least bright stars) and in 1983 for all other objects (outside the solar system).
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Collections of Measurements


velocities : 7   

   

Observing logs


herschel : 4    XMM : 18   

   


External archives :

Archive data at HEASARC - High-Energy Astrophysics Science Archive Research Center

Data at NED - NASA/IPAC Extragalactic Database : ACO 1656

Link by name to the catalogue in VizieR :

ACO 1656 2E 2932 RXC J1259.7+2756 1RXS J125947.9+275636

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2023.02.01-19:10:41

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