2004A&A...424L..17V


C.D.S. - SIMBAD4 rel 1.7 - 2020.02.20CET02:50:16

2004A&A...424L..17V - Astronomy and Astrophysics, volume 424, L17-20 (2004/9-3)

Discovery of six Lyα emitters near a radio galaxy at z∼5.2.

VENEMANS B.P., ROETTGERING H.J.A., OVERZIER R.A., MILEY G.K., DE BREUCK C., KURK J.D., VAN BREUGEL W., CARILLI C.L., FORD H., HECKMAN T., McCARTHY P. and PENTERICCI L.

Abstract (from CDS):

We present the results of narrow-band and broad-band imaging with the Very Large Telescope of the field surrounding the radio galaxy TN J0924-2201 at z=5.2. Fourteen candidate Lyα emitters with a rest-frame equivalent width of >20Å were detected. Spectroscopy of 8 of these objects showed that 6 have redshifts similar to that of the radio galaxy. The density of emitters at the redshift of the radio galaxy is estimated to be a factor 1.5-6.2 higher than in the field, and comparable to the density of Lyα emitters in radio galaxy protoclusters at z=4.1, 3.1 and 2.2. The Lyα emitters near TN J0924-2201 could therefore be part of a structure that will evolve into a massive cluster. These observations confirm that substantial clustering of Lyα emitters occurs at z>5 and support the idea that radio galaxies pinpoint high density regions in the early Universe.

Abstract Copyright:

Journal keyword(s): galaxies: active - galaxies: clusters: general - galaxies: evolution - cosmology: observations - cosmology: early Universe

Nomenclature: Table 1: [VRO2004] NNNN N=8 among (Nos 259-2881).

Simbad objects: 9

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Number of rows : 9

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 [VRO2004] 259 EmG 09 24 07.07 -22 02 09.2           ~ 1 0
2 [VRO2004] 463 EmG 09 24 08.48 -22 00 04.0           ~ 1 0
3 [VRO2004] 524 EmG 09 24 09.41 -22 02 00.5           ~ 1 0
4 [VRO2004] 559 EmG 09 24 09.51 -22 00 18.3           ~ 1 0
5 [OMB2006] 1844 EmG 09 24 16.68 -22 01 16.9           ~ 3 0
6 [DVR2000] TN J0924-2201 rG 09 24 19.94 -22 01 42.2       25.850   ~ 77 0
7 [OMB2006] 449 EmG 09 24 23.88 -22 03 44.8           ~ 3 0
8 [VRO2004] 2849 EmG 09 24 24.30 -22 02 30.9           ~ 2 0
9 [VRO2004] 2688 EmG 09 24 25.67 -22 03 01.1           ~ 2 0

    Equat.    Gal    SGal    Ecl

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2020.02.20-02:50:16

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