2005A&A...440..881I


C.D.S. - SIMBAD4 rel 1.7 - 2019.07.15CEST21:03:06

2005A&A...440..881I - Astronomy and Astrophysics, volume 440, 881-892 (2005/9-4)

Spectroscopy and stellar populations of star-forming galaxies at z ∼ 3 in the Hubble Deep Field - South.

IWATA I., INOUE A.K. and BURGARELLA D.

Abstract (from CDS):

We present results of VLT/FORS2 spectroscopy of galaxies at z∼3 in the Hubble Deep Field - South (HDF-S). A sample of galaxies was drawn from the photometric redshift catalogue based on the HST/WFPC2 optical images and the deep near-infrared images obtained with VLT/ISAAC as a part of the Faint Infrared Extragalactic Survey (FIRES) project. We selected galaxies with photometric redshift between 2.5 and 4. Most of the selected galaxies are bright in rest-frame UV wavelengths and satisfy color selection criteria of Lyman break galaxies (LBGs) at z∼3. The number of target galaxies with IAB≤25.0 was 15. We identified new 5 firm and 2 probable redshifts in addition to confirmation of 6 previously known galaxies at z∼3. We found that 6 among these 13 galaxies lie in a quite narrow redshift range at z=2.80±0.01. Their spatial distribution is fairly concentrated and is at the edge of the HDF-S field, suggesting the possible existence of larger galaxy clustering. We examined stellar populations of the galaxies with spectroscopic redshifts through comparisons of their optical and near-infrared photometry data with template spectra generated by a population synthesis code. The ages from the onset of star formation for these star-forming galaxies with I≤25.0 are typically 50-200Myr, and their stellar masses are between (0.5-5)x1010M, consistent with previous studies. We also compared these SED fitting results with those for ``distant red galaxies'' (DRGs) at z>2 discovered by FIRES. DRGs have larger stellar masses, higer dust attenuation than our UV-luminous LBG sample, and their star formation rates are often comparable to LBGs. These trends suggest that majority of the DRGs are indeed the most massive systems at that redshift and are still in the active star-forming phase. Unless the number density of DRGs is much smaller than LBGs, estimates based on a UV selected sample could miss substantial part of stellar mass density at z∼3.

Abstract Copyright:

Journal keyword(s): cosmology: observations - galaxies: high-redshift - galaxies: distances and redshifts - galaxies: evolution - galaxies: stellar content

Simbad objects: 30

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Number of rows : 30

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2019
#notes
1 CD-28 595 PM* 01 54 50.2704861570 -27 28 35.740415025   12.06 11.51     ~ 114 0
2 LP 916-15 PM* 15 38 59.6477173130 -28 35 36.970418054   12.19 11.62     A 102 0
3 [CDD2000] HDFS J223245.41-603320.3 G 22 32 45.41 -60 33 20.3   26.150 24.856   24.382 ~ 4 0
4 [CDD2000] HDFS J223246.91-603146.9 G 22 32 46.91 -60 31 46.9 27.274 25.234 24.563   24.402 ~ 5 0
5 [CDD2000] HDFS J223248.37-603237.9 G 22 32 48.3469 -60 32 37.923 27.298 26.227 25.145   24.819 ~ 8 0
6 [CDD2000] HDFS J223248.86-603154.3 G 22 32 48.84 -60 31 54.1           ~ 4 0
7 [EAD2001] HDFS J223249.18-603226.0 G 22 32 49.1360 -60 32 25.957 28.318 24.307 23.800   23.633 ~ 11 0
8 [CDD2000] HDFS J223249.26-603145.0 G 22 32 49.1379 -60 31 44.811 29.220 25.998 25.083   24.832 ~ 8 0
9 [EAD2001] HDFS J223249.40-603226.3 G 22 32 49.3395 -60 32 26.209 27.231 23.826 23.356   23.176 ~ 11 0
10 [CDD2000] HDFS J223249.47-603202.1 G 22 32 49.468 -60 32 02.10 29.522 26.683 26.469   26.313 ~ 5 0
11 [CDD2000] HDFS J223250.04-603356.8 G 22 32 50.1035 -60 33 56.812 28.365 25.191 24.658   24.551 ~ 7 0
12 [CDD2000] HDFS J223250.11-603206.6 G 22 32 50.112 -60 32 06.56 28.624 26.414 26.234   26.054 ~ 5 0
13 [CDD2000] HDFS J223251.44-603314.9 G 22 32 51.4639 -60 33 14.823   25.803 25.434   25.350 ~ 7 0
14 [CDD2000] HDFS J223252.02-603224.1 G 22 32 51.9789 -60 32 24.253   26.636 25.426   25.116 ~ 9 0
15 [LFR2003] 228 G 22 32 52.0917 -60 33 42.399   25.974 25.045   24.62 ~ 12 0
16 [CDD2000] HDFS J223252.22-603237.2 G 22 32 52.1839 -60 32 37.215 27.978 25.775 25.423   25.274 ~ 7 0
17 SB-WF 2565-1907 G 22 32 53.1284 -60 33 20.059     25.43   24.94 ~ 7 0
18 [CDD2000] HDFS J223253.43-603312.2 G 22 32 53.4376 -60 33 12.084 27.526 25.686 24.908   24.627 ~ 8 0
19 [CDD2000] HDFS J223254.13-603230.0 G 22 32 54.133 -60 32 30.05 28.849 26.504 25.925   25.755 ~ 6 0
20 [LFR2003] 92 G 22 32 54.2530 -60 34 08.962 27.732 25.712 25.283   24.57 ~ 9 0
21 [LFR2003] 192 G 22 32 54.2812 -60 33 50.326 28.035 26.186 25.228   24.50 ~ 7 0
22 [LFR2003] 265 G 22 32 55.7460 -60 33 33.618 26.002 25.424 24.889   23.42 ~ 13 0
23 NAME HDF-S reg 22 32 56 -60 33.0           ~ 534 0
24 [EAD2001] HDFS J223256.38-603144.3 IG 22 32 56.3471 -60 31 44.310   26.017 24.951   24.680 ~ 5 0
25 [CDD2000] HDFS J223303.01-603353.7 G 22 33 03.0987 -60 33 53.607   25.99       ~ 6 0
26 [CDD2000] HDFS J223303.59-603426.5 G 22 33 03.59 -60 34 26.5   26.886 26.396   26.107 ~ 4 0
27 [CDD2000] HDFS J223304.90-603330.7 G 22 33 04.900 -60 33 30.68 33.730 24.666 24.424   24.327 ~ 8 0
28 [LFR2003] 6 G 22 33 04.9399 -60 34 28.029 26.028 25.866 23.759   22.826 ~ 4 0
29 [CDD2000] HDFS J223305.43-603342.7 G 22 33 05.43 -60 33 42.7 28.975 26.889 26.105   26.023 ~ 3 0
30 Feige 110 HS* 23 19 58.3995050606 -05 09 56.170282845 10.360 11.45 11.50 11.970 12.145 sdO8VIIIHe5 527 1

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2019.07.15-21:03:06

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