2001A&A...379..426P


C.D.S. - SIMBAD4 rel 1.7 - 2020.06.04CEST22:23:33

2001A&A...379..426P - Astronomy and Astrophysics, volume 379, 426-435 (2001/11-4)

Photometric validation of a model independent procedure to extract galaxy clusters.

PUDDU E., ANDREON S., LONGO G., STRAZZULLO V., PAOLILLO M. and GAL R.R.

Abstract (from CDS):

By means of CCD photometry in three bands (Gunn g, r, i) we investigate the existence of 12 candidate clusters extracted via a model independent peak finding algorithm (Puddu et al., 2000, MmSAI, Vol 71, No. 4, in press) from DPOSS data. The derived color-magnitude diagrams allow us to confirm the physical nature of 9 of the cluster candidates, and to estimate their photometric redshifts. Of the other candidates, one is a fortuitous detection of a true cluster at z∼0.4, one is a false detection and the last is undecidable on the basis of the available data. The accuracy of the photometric redshifts is tested on an additional sample of 8 clusters with known spectroscopic redshifts. Photometric redshifts turn out to be accurate within z∼0.01 (interquartile range).

Abstract Copyright:

Journal keyword(s): methods: data analysis - galaxies: clustering - galaxies: clusters: photometric redshift

Nomenclature: Table 1: [PAL2001] FF-NNN N=12.

Status at CDS:  

Simbad objects: 20

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Number of rows : 20

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 ZwCl 0457+1010 ClG 05 00 07.24 +10 15 52.0           ~ 1 0
2 [PAL2001] 24-694 ClG 05 03 38.92 +10 38 08.6           ~ 1 0
3 [PAL2001] 21-694 ClG 05 04 42.34 +10 48 49.0           ~ 1 0
4 ClG 0821+03 ClG 08 24 05.0 +03 26 18     19.0     ~ 15 0
5 [PAL2001] 44-778 ClG 08 59 52.68 +04 10 53.2           ~ 1 0
6 [PAL2001] 17-778 ClG 09 08 28.20 +06 03 39.5           ~ 1 0
7 [PAL2001] 5-778 ClG 09 12 11.09 +02 23 10.2           ~ 1 0
8 [PAL2001] 1-778 ClG 09 12 15.34 +02 32 18.1           ~ 1 0
9 [PAL2001] 64-781 ClG 09 57 25.10 +03 39 06.7           ~ 1 0
10 [PAL2001] 72-781 ClG 09 57 53.23 +03 27 10.1           ~ 1 0
11 ACO 1437 ClG 12 00 24.5 +03 19 52           ~ 63 0
12 ClG 1253.9+0456 ClG 12 56 28.8 +04 40 02     18.0     ~ 20 0
13 ACO 1835 ClG 14 01 02.07 +02 52 43.2           ~ 620 1
14 ClG 1401.9+0437 ClG 14 04 29.4 +04 23 01   18.5       ~ 12 0
15 ClG 1426+01 ClG 14 28 51.3 +01 45 36     19.0     ~ 29 0
16 ACO 2033 ClG 15 11 23.50 +06 19 08.4           ~ 85 0
17 [PAL2001] 6-725 ClG 15 24 52.60 +11 20 27.1           ~ 1 0
18 ClG 1532+01 ClG 15 35 02.7 +01 20 58     19.0     ~ 15 0
19 [PAL2001] 26-727 ClG 15 57 48.70 +08 52 04.4           ~ 1 0
20 ZwCl 1600+0322 ClG 16 03 11.78 +03 14 17.6           ~ 1 0

    Equat.    Gal    SGal    Ecl

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2020.06.04-22:23:33

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