2014A&A...563A..58T


C.D.S. - SIMBAD4 rel 1.7 - 2019.08.24CEST12:46:30

2014A&A...563A..58T - Astronomy and Astrophysics, volume 563A, 58-58 (2014/3-1)

Metallicity evolution, metallicity gradients, and gas fractions at z ∼ 3.4.

TRONCOSO P., MAIOLINO R., SOMMARIVA V., CRESCI G., MANNUCCI F., MARCONI A., MENEGHETTI M., GRAZIAN A., CIMATTI A., FONTANA A., NAGAO T. and PENTERICCI L.

Abstract (from CDS):

We used near-infrared integral field spectroscopic observations from the AMAZE and LSD ESO programs to constrain the metallicity in a sample of 40 star-forming galaxies at 3<z<5 (most of which are at z∼3.4). We measured metallicities by exploiting strong emission-line diagnostics. We found that a significant fraction of star-forming galaxies at z∼3.4 deviate from the fundamental metallicity relation (FMR), with a metallicity of up to a factor of ten lower than expected according to the FMR. This deviation does not correlate with the dynamical properties of the galaxy or with the presence of interactions. To investigate the origin of the metallicity deviation in more detail, we also inferred information on the gas content by inverting the Schmidt-Kennicutt relation, assuming that the latter does not evolve out to z∼3.4. In agreement with recent CO observational data, we found that in contrast with the steeply rising trend at 0<z<2, the gas fraction in massive galaxies remains constant, with an indication of a marginal decline at 2<z<3.5. When combined with the metallicity information, we infer that to explain the low metallicity and gas content in z∼3.4 galaxies, both prominent outflows and massive pristine gas inflows are needed. In ten galaxies we can also spatially resolve the metallicity distribution. We found that the metallicity generally anticorrelates with the distribution of star formation and with the gas surface density. We discuss these findings in terms of pristine gas inflows toward the center, and outflows of metal-rich gas from the center toward the external regions.

Abstract Copyright:

Journal keyword(s): Galaxy: evolution - galaxies: high-redshift - galaxies: abundances - galaxies: star formation - galaxies: ISM - infrared: ISM

Simbad objects: 43

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Number of rows : 43

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 SAS-LBG CDFa-C9 G 00 53 13.71 +12 32 11.1       23.99   ~ 7 0
2 SAS-LBG Q0302-C131 G 03 04 35.04 -00 11 18.3           ~ 7 0
3 SAS-LBG Q0302-C171 G 03 04 44.31 -00 08 23.2           ~ 5 0
4 SAS-LBG Q0302-M80 G 03 04 45.70 -00 13 40.6           ~ 6 0
5 SAS-LBG Q0302-MD287 G 03 04 52.79 -00 09 54.6           ~ 3 0
6 [BIO2015] ERSB-2171342178 G 03 32 17.1337 -27 42 17.809   27.3     25.05 ~ 10 0
7 ZFOURGE CDFS 15992 EmG 03 32 17.20802 -27 47 54.1255   26.01   24.505 24.83 ~ 18 0
8 GOODS-MUSIC 9340 G 03 32 17.24 -27 47 53.4           ~ 6 0
9 [BIO2015] ERSB-2180645186 G 03 32 18.066 -27 45 18.78   28.1   24.797 24.74 ~ 13 0
10 [BIO2015] ERSB-2209343463 G 03 32 20.938 -27 43 46.34   26.7     24.56 ~ 13 0
11 ZFOURGE CDFS 9084 G 03 32 22.5940 -27 51 18.005   27.2 25.71   24.92 ~ 12 0
12 [HOG2016] Bs012141 G 03 32 23.2212 -27 51 57.907   24.29   24.18 25.51 ~ 14 0
13 [LBX2017] 416 AGN 03 32 23.3376 -27 51 56.870   26.1   23.42 23.45 ~ 18 0
14 NAME Chandra Deep Field-South reg 03 32 28.0 -27 48 30           ~ 1736 1
15 ZFOURGE CDFS 11462 EmG 03 32 33.3263 -27 50 07.365   27.3   24.80 24.79 ~ 14 0
16 [BIO2015] ERSB-2359541499 G 03 32 35.956 -27 41 49.97   26.11   24.214 24.15 ~ 17 0
17 VUDS 530051132 G 03 32 36.31718 -27 44 34.5026   25.56   24.430   ~ 11 0
18 GOODS-MUSIC 11991 G 03 32 42.40 -27 45 51.6       24.23   ~ 4 0
19 GOODS-MUSIC 2528 G 03 32 45.50 -27 53 33.3       24.64   ~ 7 0
20 [CBB2010b] A1689 368 LeG 13 11 25.4470 -01 20 51.740           ~ 12 0
21 [CBB2010b] A1689 308 LeG 13 11 26.4410 -01 19 56.940           ~ 9 1
22 ACO 1689 ClG 13 11 29.5 -01 20 28           ~ 996 0
23 [FBB2002] A1689 1 G 13 11 29.9690 -01 19 14.880           ~ 5 0
24 [FHB2012] ELS 10399 EmG 13 11 34.9940 -01 19 51.170           ~ 5 0
25 SAS-LBG Q1422-D88 G 14 24 37.94 +23 00 22.3           ~ 4 0
26 SAS-LBG 3C324-C3 G 15 49 47.10 +21 27 05.4           ~ 9 0
27 LDN 1689 DNe 16 32 22.5 -24 28 29           ~ 103 0
28 NAME Cosmic Eye G 21 35 12.730 -01 01 42.90           ~ 76 0
29 SAS-LBG SSA22a-M38 G 22 17 17.69 +00 19 00.7       24.11   ~ 10 0
30 SAS-LBG SSA22a-C48 G 22 17 18.60 +00 18 16.2       24.57   ~ 6 0
31 SAS-LBG SSA22a-D17 G 22 17 18.87 +00 18 16.8       24.29   ~ 11 0
32 SAS-LBG SSA22a-C30 G 22 17 19.28 +00 15 44.7       23.70   ~ 8 0
33 [SAG99] SSA 22a-G3 G 22 17 30.79 +00 12 50.9         24.65 ~ 2 0
34 SAS-LBG SSA22a-aug96M16 G 22 17 30.90 +00 13 10.7       23.83   ~ 10 0
35 SAS-LBG SSA22a-C16 EmO 22 17 31.96 +00 13 16.1       23.62   ~ 23 0
36 SAS-LBG SSA22a-M4 G 22 17 40.92 +00 11 27.9           ~ 8 0
37 [SAD98] SSA 22a C5 G 22 17 40.93 +00 11 26.0           ~ 19 0
38 SAS-LBG SSA22a-C36 G 22 17 46.10 +00 16 43.1           ~ 7 0
39 SAS-LBG SSA22b-C5 G 22 17 47.06 +00 04 25.7           ~ 4 0
40 SAS-LBG DSF2237b-D28 G 22 39 20.25 +11 55 11.4           ~ 7 0
41 SAS-LBG DSF2237b-MD19 G 22 39 21.08 +11 48 27.7           ~ 5 0
42 SAS-LBG DSF2237b-C21 G 22 39 29.00 +11 50 58.1           ~ 5 0
43 SAS-LBG DSF2237b-D29 G 22 39 32.70 +11 55 51.7           ~ 3 0

    Equat.    Gal    SGal    Ecl

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2019.08.24-12:46:30

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