2018A&A...619A.147P

Query : 2018A&A...619A.147P

2018A&A...619A.147P - Astronomy and Astrophysics, volume 619A, 147-147 (2018/11-1)

CANDELSz7: a large spectroscopic survey of CANDELS galaxies in the reionization epoch.

PENTERICCI L., VANZELLA E., CASTELLANO M., FONTANA A., DE BARROS S., GRAZIAN A., MARCHI F., BRADAC M., CONSELICE C.J., CRISTIANI S., DICKINSON M., FINKELSTEIN S.L., GIALLONGO E., GUAITA L., KOEKEMOER A.M., MAIOLINO R., SANTINI P. and TILVI V.

Abstract (from CDS):

We present the results of CANDELSz7, a European Southern Observatory (ESO) Large Program aimed at spectroscopically confirming a homogeneous sample of z~=6 and z~=7 star forming galaxies. The candidates were selected in the GOODS-South, UDS, and COSMOS fields using the official CANDELS catalogs based on H160-band detections. Standard color criteria, which were tailored depending on the ancillary multi-wavelength data available for each field, were applied to select more than 160 candidate galaxies at z~=6 and z~=7. Deep, medium-resolution FORS2 spectroscopic observations were then conducted with integration times ranging from 12 to 20 h to reach a Lyα flux limit of approximately 1-3x10–18erg/s/cm2 at 3σ. We could determine a spectroscopic redshift for about 40% of the galaxies, mainly through the detection of a single emission line that we interpret as Lyα emission, or for some of the brightest objects (H160≤25.5) from the presence of faint continuum and a sharp drop that we interpret as a Lyα break. In this paper we present the redshifts and main properties of 65 newly confirmed high-redshift galaxies. Adding previous proprietary and archival data we assemble a sample of ~=260 galaxies that we use to explore the evolution of the Lyα fraction in Lyman break galaxies and the change in the shape of the emission line between z∼6 and z∼7. We also discuss the accuracy of the CANDELS photometric redshifts in this redshift range.

Abstract Copyright: © ESO 2018

Journal keyword(s): galaxies: high-redshift - galaxies: distances and redshifts - dark ages - reionization - first stars

Simbad objects: 73

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Number of rows : 73
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2024 		#notes
1 CANDELS UDS F160W J021654.80-050850.7 EmG 02 16 54.8038 -05 08 50.757           ~ 5 0
2 CANDELS UDS F160W J021655.57-051123.2 EmG 02 16 55.57 -05 11 23.2           ~ 6 0
3 CANDELS UDS F160W J021655.99-050811.3 G 02 16 56.0028 -05 08 11.233           ~ 3 0
4 CANDELS UDS F160W J021700.89-051224.4 EmG 02 17 00.8926 -05 12 24.490           ~ 8 0
5 CANDELS UDS F160W J021706.72-051017.0 G 02 17 06.72 -05 10 17.0           ~ 6 0
6 CANDELS UDS F160W J021714.50-050844.2 EmG 02 17 14.50 -05 08 44.2       28.243   ~ 6 0
7 CANDELS UDS F160W J021723.78-050958.3 EmG 02 17 23.7838 -05 09 58.386           ~ 3 0
8 CANDELS UDS F160W J021725.11-051134.9 EmG 02 17 25.1220 -05 11 34.947           ~ 5 0
9 CANDELS UDS F160W J021725.46-051529.6 EmG 02 17 25.45 -05 15 29.6           ~ 5 0
10 CANDELS UDS F160W J021725.47-051108.2 EmG 02 17 25.4743 -05 11 08.255           ~ 15 0
11 CANDELS UDS F160W J021735.33-051032.4 EmG 02 17 35.337 -05 10 32.50           ~ 13 0
12 CANDELS UDS F160W J021748.30-051031.7 G 02 17 48.30 -05 10 31.7           ~ 6 0
13 CANDELS UDS F160W J021752.10-051140.0 EmG 02 17 52.0999 -05 11 40.062           ~ 6 0
14 CANDELS UDS F160W J021752.18-051229.1 EmG 02 17 52.1897 -05 12 29.180   26.129 26.129 26.212   ~ 2 0
15 CANDELS UDS F160W J021754.17-051454.5 EmG 02 17 54.1754 -05 14 54.596           ~ 12 0
16 CANDELS UDS F160W J021755.68-051453.4 EmG 02 17 55.6870 -05 14 53.412           ~ 6 0
17 CANDELS UDS F160W J021755.88-051143.1 EmG 02 17 55.8811 -05 11 43.098           ~ 7 0
18 CANDELS UDS F160W J021757.30-051556.5 EmG 02 17 57.3029 -05 15 56.499           ~ 6 0
19 NAME SXDSF reg 02 18 00 -05 00.0           ~ 224 1
20 CANDELS UDS F160W J021800.90-051137.8 EmG 02 18 00.899 -05 11 37.69           ~ 10 0
21 CANDELS UDS F160W J021804.48-051010.0 EmG 02 18 04.4867 -05 10 10.054           ~ 2 0
22 CANDELS UDS F160W J021806.09-051428.3 EmG 02 18 06.0935 -05 14 28.368           ~ 2 0
23 [BIO2015] GSDZ-2081246408 EmG 03 32 08.130 -27 46 40.83           ~ 6 0
24 [VBH2012] CANDELS GOODS-S 34061 EmG 03 32 11.0706 -27 42 29.865           ~ 1 0
25 GOODS-MUSIC 10793 EmG 03 32 13.41 -27 46 46.3           ~ 6 0
26 [BIO2011] ERSz-2153943286 EmG 03 32 15.40 -27 43 28.6         27.52 ~ 6 0
27 [BIO2015] ERSI-2160043014 EmG 03 32 16.00 -27 43 01.4         27.68 ~ 11 0
28 [BIB2006] CDFS-2166547398 EmG 03 32 16.65 -27 47 39.8           ~ 5 0
29 ZFOURGE CDFS 27166 EmG 03 32 16.98 -27 42 23.8           ~ 5 0
30 VANDELS CDFS 016024 G 03 32 17.55 -27 46 25.1           ~ 5 0
31 ZFOURGE CDFS 17677 EmG 03 32 19.936 -27 47 10.59           ~ 9 0
32 [BIB2006] CDFS-2228345379 EmG 03 32 22.82 -27 45 37.9           ~ 6 0
33 [BIF2008] CDFS-3225-4627 EmG 03 32 25.2126 -27 46 26.648           ~ 14 0
34 GOODS-MUSIC 15047 EmG 03 32 27.88 -27 43 15.6           ~ 10 0
35 NAME GOODS Southern Field reg 03 32 28.0 -27 48 30           ~ 1340 1
36 GOODS J033228.19-274818.7 EmG 03 32 28.1925 -27 48 18.673           ~ 11 0
37 MUSE-WIDE 135049239 EmG 03 32 29.973 -27 47 02.80           ~ 11 0
38 UDF 6231 EmG 03 32 30.136 -27 47 12.04 28.4463 28.5420 29.226     ~ 8 0
39 [BIB2006] CDFS-2323746215 G 03 32 32.37 -27 46 21.4           ~ 5 0
40 [BIB2006] CDFS-2340645186 EmG 03 32 34.06 -27 45 18.5           ~ 6 0
41 UDF 33268 EmG 03 32 34.526 -27 47 34.86           ~ 6 0
42 [FPG2010] 1566 EmG 03 32 34.928 -27 47 01.40           ~ 5 0
43 [GFG2013b] 13184 EmG 03 32 36.4638 -27 47 32.468           ~ 2 0
44 GOODS-MUSIC 10898 EmG 03 32 36.470 -27 46 41.44   29.56 31.02   26.54 ~ 23 0
45 GOODS-MUSIC 16461 G 03 32 37.953 -27 42 07.60           ~ 11 0
46 UDF 7730 EmG 03 32 38.282 -27 46 17.22   29.3328 30.49     ~ 24 0
47 NAME Hubble Ultra Deep Field reg 03 32 39.0 -27 47 29           ~ 1666 0
48 GOODS J033239.06-274538.7 EmG 03 32 39.066 -27 45 38.75   30.7705 38.76     ~ 20 0
49 [BIO2011] UDFz-41826112 EmG 03 32 41.823 -27 46 11.24         29.79 ~ 14 0
50 [VBH2012] CANDELS GOODS-S 33418 EmG 03 32 46.6791 -27 43 34.856           ~ 1 0
51 ZFOURGE CDFS 13932 EmG 03 32 48.48 -27 48 58.8           ~ 8 0
52 VANDELS CDFS 020698 EmG 03 32 48.7546 -27 44 01.264           ~ 4 0
53 ClG 0657-56 ClG 06 58 29.6 -55 56 39           ~ 963 1
54 CANDELS COSMOS F160W J100021.39+021610.1 EmG 10 00 21.40 +02 16 10.2           ~ 4 0
55 NAME COS-zs7-1 EmG 10 00 23.77 +02 20 37.0           ~ 31 0
56 CANDELS COSMOS F160W J100025.58+021652.6 G 10 00 25.5908 +02 16 52.719           ~ 4 0
57 CANDELS COSMOS F160W J100025.86+021618.9 EmG 10 00 25.86 +02 16 18.8           ~ 5 0
58 COSMOS2015 758638 EmG 10 00 28.34 +02 27 06.1           ~ 4 0
59 CANDELS COSMOS F160W J100028.38+021826.1 EmG 10 00 28.38 +02 18 26.2           ~ 4 0
60 NAME COSMOS Field reg 10 00 28.60 +02 12 21.0           ~ 2972 0
61 COSMOS2015 726034 G 10 00 30.38 +02 24 05.2           ~ 5 0
62 CANDELS COSMOS F160W J100030.59+021935.1 EmG 10 00 30.58 +02 19 35.1           ~ 7 0
63 CANDELS COSMOS F160W J100033.50+022537.1 EmG 10 00 33.50 +02 25 37.1           ~ 8 0
64 CANDELS COSMOS F160W J100037.18+021637.8 EmG 10 00 37.1960 +02 16 37.831           ~ 4 0
65 CANDELS COSMOS F160W J100038.67+023040.0 G 10 00 38.675 +02 30 40.08           ~ 2 0
66 [NHM2017] 30549 EmG 10 00 39.008 +02 14 03.68           ~ 2 0
67 [NHM2017] 21151 EmG 10 00 39.839 +02 26 08.85           ~ 2 0
68 CANDELS COSMOS F160W J100042.52+021542.6 EmG 10 00 42.5281 +02 15 42.549           ~ 4 0
69 CANDELS COSMOS F160W J100043.92+022621.1 EmG 10 00 43.92 +02 26 21.1           ~ 6 0
70 CANDELS COSMOS F160W J100045.92+022932.3 G 10 00 45.922 +02 29 32.38           ~ 2 0
71 CANDELS COSMOS F160W J100047.22+022717.3 G 10 00 47.224 +02 27 17.37           ~ 2 0
72 CANDELS COSMOS F160W J100047.33+022843.1 EmG 10 00 47.333 +02 28 43.14           ~ 3 0
73 ACO 1703 ClG 13 15 05.2 +51 49 02           ~ 145 0

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