2004MNRAS.347L...7B


C.D.S. - SIMBAD4 rel 1.7 - 2020.01.29CET21:57:27

2004MNRAS.347L...7B - Mon. Not. R. Astron. Soc., 347, L7-L12 (2004/January-1)

The properties of Lyman break galaxies at z ∼ 5.

BREMER M.N., LEHNERT M.D., WADDINGTON I., HARDCASTLE M.J., BOYCE P.J. and PHILLIPPS S.

Abstract (from CDS):

In a recent paper, Lehnert & Bremer have photometrically selected a sample of Lyman break galaxies at z > 4.8 from a single VLT/FORS2 pointing and spectroscopically confirmed half of them to be at 4.8 < z < 5.8. To study the properties of such galaxies further, we have photometrically selected a similar sample (VAB> 28, iAB< 26.3, iAB-zAB> 0) from the Hubble Space Telescope Advanced Camera for Surveys (HST ACS) images of the Chandra Deep Field -South. This selection results in a sample of 44 sources from ∼150 arcmin2. We find that such galaxies are often barely resolved in the ACS images, having half-light radii of 0.1-0.3 arcsec (<2 kpc). They show no difference in spatial clustering from sources selected by iAB< 26.3, iAB-zAB> 0, which are generally galaxies of lower redshift. However, their distribution over the field is not uniform and their surface density varies considerably over areas comparable to a single 8-m or HST pointing. A reliable determination of the surface and volume densities of such galaxies requires a sky area considerably larger than the current ACS imaging of this field. No individual Lyman break candidate was detected to a 3σ limit of 6x10–17 erg/s/cm at 0.5-5 keV by Chandra (a limiting luminosity of below 2x1043 erg/s at z ∼ 5.3). By summing over all positions, we find that the mean source must be undetected at a level at least a factor of 4 times fainter than this. This rules out anything other than a weak active galactic nucleus (AGN) contribution to the emission from these objects; we conclude that luminous AGNs made little contribution to the final stages of re-ionization of the Universe.

Abstract Copyright: 2004 RAS

Journal keyword(s): galaxies: distances and redshifts - galaxies: evolution - galaxies: formation - cosmology: observations - early Universe

Nomenclature: Table 1: [BLW2004] NN (Nos 1-44).

Simbad objects: 46

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Number of rows : 46

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 [BLW2004] 1 G 03 32 08.6929 -27 43 14.648           ~ 2 0
2 ZFOURGE CDFS 18966 G 03 32 11.2872 -27 46 30.556           ~ 5 1
3 [BIO2015] GSDV-2154052265 G 03 32 15.40 -27 52 26.5           ~ 3 0
4 [BIO2015] GSDV-2161746415 G 03 32 16.17 -27 46 41.6     28.74     ~ 4 0
5 [BLW2004] 5 G 03 32 16.9105 -27 48 08.317   28.2     25.8 ~ 5 0
6 [MRD2015] 5534 AGN 03 32 17.47200 -27 50 03.2784           ~ 23 1
7 ZFOURGE CDFS 9688 G 03 32 17.8152 -27 50 52.774         26.1 ~ 7 1
8 [BIB2006] CDFS-2181947466 G 03 32 18.1867 -27 47 46.640   29.667 27.995 26.29 25.23 ~ 17 1
9 [BIB2006] CDFS-2192345455 G 03 32 19.2300 -27 45 45.461     27.972   24.79 ~ 12 1
10 [BLW2004] 10 G 03 32 19.7415 -27 41 39.966           ~ 2 0
11 [LBX2017] 376 AGN 03 32 20.95 -27 53 39.2           ~ 6 0
12 [BIO2015] ERSV-2213040511 G 03 32 21.3036 -27 40 51.201     28.07     ~ 10 0
13 [BIB2006] CDFS-2224750474 G 03 32 22.4727 -27 50 47.351   29.795 29.886   26.19 ~ 11 1
14 [BLW2004] 15 G 03 32 23.994 -27 41 07.90   28.45     26.08 ~ 6 0
15 ZFOURGE CDFS 1181 G 03 32 27.5753 -27 56 26.623   27.8     25.9 ~ 5 0
16 NAME Chandra Deep Field-South reg 03 32 28.0 -27 48 30           ~ 1776 1
17 [CCO2011] ERS2916 G 03 32 28.874 -27 41 32.49   27.11 27.18     ~ 2 0
18 ZFOURGE CDFS 26379 G 03 32 30.581 -27 42 43.46     27.29     ~ 8 1
19 [BIO2015] GSDV-2310751178 G 03 32 31.0775 -27 51 17.853     28.91     ~ 6 0
20 [CCO2011] ERS2299 G 03 32 31.094 -27 42 26.69     27.47     ~ 4 1
21 [BLW2004] 21 G 03 32 31.75 -27 54 14.0           ~ 2 0
22 [BIO2015] GSDV-2334750299 G 03 32 33.4743 -27 50 30.003     28.20     ~ 9 0
23 [BLW2004] 14 G 03 32 33.69 -27 51 54.1           ~ 1 0
24 [BIO2015] GSDV-2351051253 G 03 32 35.10 -27 51 25.3           ~ 3 0
25 [BLW2004] 24 G 03 32 36.2393 -27 43 15.355           ~ 2 1
26 [BLW2004] 25 G 03 32 37.1915 -27 51 10.926           ~ 2 0
27 [BIO2015] ERSV-2372542025 G 03 32 37.2560 -27 42 02.573     28.47     ~ 7 0
28 ZFOURGE CDFS 5057 G 03 32 37.9065 -27 53 31.036           ~ 3 1
29 ZFOURGE CDFS 8258 G 03 32 40.400 -27 51 42.34           ~ 7 1
30 ZFOURGE CDFS 25605 G 03 32 41.240 -27 43 09.71   27.5 26.63     ~ 8 1
31 [MRD2015] 557 G 03 32 42.341 -27 42 04.00   28.0 26.05   24.92 ~ 10 0
32 [BLW2004] 32 G 03 32 42.6226 -27 54 28.954   29.9 28.17     ~ 9 0
33 [BLW2004] 31 G 03 32 42.6242 -27 54 28.968           ~ 2 0
34 [BIO2015] GSDV-2426693930 EmG 03 32 42.6588 -27 49 38.995     28.31     ~ 9 1
35 [BIO2015] ERSV-2433043105 G 03 32 43.30800 -27 43 10.6392     28.73     ~ 5 0
36 ZFOURGE CDFS 6159 G 03 32 45.5228 -27 52 50.407           ~ 3 0
37 GOODS J033247.66-275105.0 G 03 32 47.6574 -27 51 05.029         26.5 ~ 4 0
38 [BIO2015] GSDV-2481448176 G 03 32 48.14 -27 48 17.7     27.95     ~ 5 1
39 GOODS J033249.15-275022.5 G 03 32 49.1549 -27 50 22.527     28.24     ~ 5 0
40 [BLW2004] 39 G 03 32 50.67 -27 46 30.3           ~ 2 0
41 [BLW2004] 40 G 03 32 52.78656 -27 51 25.6896   29.2     25.31 ~ 4 1
42 [BLW2004] 41 G 03 32 52.8835 -27 54 55.821         25.5 ~ 4 1
43 [BLW2004] 42 G 03 32 53.95 -27 54 52.3           ~ 1 0
44 [BIO2015] GSWV-2586652436 G 03 32 58.66 -27 52 43.7     28.33     ~ 4 0
45 [BLW2004] 44 G 03 32 59.72 -27 52 02.6     29.20     ~ 2 0
46 NAME Hubble Deep Field reg 12 36 49.5 +62 12 58           ~ 1815 1

    Equat.    Gal    SGal    Ecl

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2020.01.29-21:57:27

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