2004AJ....127..679B

Query : 2004AJ....127..679B

2004AJ....127..679B - Astron. J., 127, 679-685 (2004/February-0)

Clustering and light profiles of galaxies in the environment of 20 Ultra-Steep-Spectrum radio sources.

BORNANCINI C.G., MARTINEZ H.J., LAMBAS D.G., DE VRIES W., VAN BREUGEL W., DE BREUCK C. and MINNITI D.

Abstract (from CDS):

We have analyzed galaxy properties in the neighborhood of 20 ultra-steep-spectrum (USS) radio sources taken from the Westerbork in the Southern Hemisphere (WISH) catalog of De Breuck and coworkers. Galaxies in these USS fields were identified in deep observations that were carried out in the K' band using the OSIRIS imager at the CTIO 4 m telescope. We find a statistically significant signal of clustering around our sample of USS sources. The angular extension of the detected USS source-galaxy clustering is θc∼20'', corresponding to a spatial scale of ∼120 h–1 kpc, assuming the sources are at z∼1 in an Ωm=0.3, ΩΛ=0.7 model universe. These results are in agreement with those obtained by Best for radio galaxy-galaxy correlation, and Best and coworkers for radio-loud AGN-galaxy correlation. We have also analyzed the light distribution of the galaxies by fitting Sérsic's law profiles. Our results show no significant dependence of the galaxy shape parameters on the projected distance to the USS source.

Abstract Copyright: ∼

Journal keyword(s): Cosmology: Theory - Galaxies: Evolution - Galaxies: Formation - Galaxies: Fundamental Parameters - radio continuum: galaxies

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 - 2026 		#notes
1 WISH J0526-1830 Rad 05 26 24.60 -18 30 40.1           ~ 2 0
2 WISH J0612-1536 Rad 06 12 38.23 -15 36 47.2           ~ 1 0
3 NVSS J091034-222843 Rad 09 10 34.272 -22 28 44.96           ~ 10 1
4 WISH J0912-1655 QSO 09 12 57.24 -16 55 54.8           ~ 4 0
5 WISH J1047-1836 Rad 10 47 15.51 -18 36 31.1           ~ 3 0
6 WISH J1052-1812 Rad 10 52 00.82 -18 12 32.3           ~ 3 0
7 NVSS J110154-213427 Rad 11 01 54.10 -21 34 27.0           ~ 3 1
8 NVSS J110949-191753 Rad 11 09 49.911 -19 17 54.18           ~ 5 1
9 WISH J1138-1324 Rad 11 38 05.42 -13 24 23.5           ~ 3 0
10 NVSS J115009-131753 Rad 11 50 09.213 -13 17 55.79           ~ 5 1
11 WISH J1222-2129 Rad 12 22 48.22 -21 29 10.0           ~ 3 0
12 WISH J1255-1913 Rad 12 55 52.66 -19 13 00.6           ~ 3 0
13 NVSS J133147-194726 Rad 13 31 46.597 -19 47 26.46           ~ 5 1
14 WISH J1450-1525 Rad 14 50 42.63 -15 25 45.2           ~ 2 0
15 WISH J1516-2110 Rad 15 16 42.32 -21 10 27.4           ~ 3 0
16 WISH J1518-1225 Rad 15 18 43.43 -12 25 35.6           ~ 3 0
17 WISH J1557-1349 Rad 15 57 41.72 -13 49 54.8           ~ 3 0
18 WISH J1603-1500 Rad 16 03 04.78 -15 00 53.8           ~ 3 0
19 NVSS J163744-193122 Rad 16 37 44.85 -19 31 22.9           ~ 7 1
20 NVSS J200256-184247 Rad 20 02 56.00 -18 42 47.5           ~ 4 1

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