2024A&A...683A.238J

Query : 2024A&A...683A.238J

2024A&A...683A.238J - Astronomy and Astrophysics, volume 683A238 (2024/3-1)

JADES: The emergence and evolution of Lyα emission and constraints on the intergalactic medium neutral fraction.

JONES G.C., BUNKER A.J., SAXENA A., WITSTOK J., STARK D.P., ARRIBAS S., BAKER W.M., BHATAWDEKAR R., BOWLER R., BOYETT K., CAMERON A.J., CARNIANI S., CHARLOT S., CHEVALLARD J., CURTI M., CURTIS-LAKE E., EISENSTEIN D.J., HAINLINE K., HAUSEN R., JI Z., JOHNSON B.D., KUMARI N., LOOSER T.J., MAIOLINO R., MASEDA M.V., PARLANTI E., RIX H.-W., ROBERTSON B.E., SANDLES L., SCHOLTZ J., SMIT R., TACCHELLA S., UBLER H., WILLIAMS C.C. and WILLOTT C.

Abstract (from CDS):

The rest-frame UV recombination emission line Lyα can be powered by ionising photons from young massive stars in star-forming galaxies, but the fact that it can be resonantly scattered by neutral gas complicates its interpretation. For reionisation-era galaxies, a neutral intergalactic medium will scatter Lyα from the line of sight, making Lyα a useful probe of the neutral fraction evolution. Here, we explore Lyα in JWST/NIRSpec spectra from the ongoing JADES programme, which targets hundreds of galaxies in the well-studied GOODS-S and GOODS-N fields. These sources are UV-faint (-20.4 < MUV < -16.4) and thus represent a poorly explored class of galaxy. We fitted the low spectral resolution spectra (R ∼ 100) of a subset of 84 galaxies in GOODS-S with zspec > 5.6 (as derived with optical lines) with line and continuum models to search for significant line emission. Through exploration of the R100 data, we find evidence for Lyα in 17 sources. This sample allowed us to place observational constraints on the fraction of galaxies with Lyα emission in the redshift range 5.6 < z < 7.5, with a decrease from z = 6 to z = 7. We also find a positive correlation between the Lyα equivalent width and MUV, as seen in other samples. We used these results to estimate the neutral gas fraction at z ∼ 7, and our estimates are in agreement with previous results (XHI ∼ 0.5 - 0.9).

Abstract Copyright: © The Authors 2024

Journal keyword(s): galaxies: high-redshift - intergalactic medium - dark ages - reionization - first stars

VizieR on-line data: <Available at CDS (J/A+A/683/A238): ancdata.dat>

Status at CDS : All or part of tables of objects could be ingested in SIMBAD with priority 2.

Simbad objects: 95

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Number of rows : 95
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 ACO 2744 ClG 00 14 20.03 -30 23 17.8           ~ 1077 0
2 JADES-GS+053.08311-27.78635 EmG 03 32 19.936 -27 47 10.59           ~ 11 0
3 JADES-GS+053.08604-27.74760 EmG 03 32 20.64 -27 44 51.0           ~ 8 0
4 JADES-GS+053.08722-27.77706 EmG 03 32 20.92 -27 46 37.1           ~ 7 0
5 JADES-GS+053.09517-27.76061 EmG 03 32 22.82 -27 45 37.9           ~ 11 0
6 JADES-GS+053.10538-27.72347 EmG 03 32 25.28 -27 43 24.2           ~ 10 0
7 JADES-GS+053.10547-27.76115 EmG 03 32 25.305 -27 45 39.84           ~ 3 0
8 JADES-GS+053.11041-27.80892 EmG 03 32 26.49 -27 48 31.8           ~ 11 0
9 JADES-GS+053.11243-27.77461 EmG 03 32 26.97 -27 46 28.3           ~ 44 0
10 JADES-GS+053.11264-27.77262 EmG 03 32 27.03 -27 46 21.4           ~ 1 0
11 JADES-GS+053.11351-27.77284 EmG 03 32 27.23 -27 46 21.9           ~ 13 0
12 JADES-GS+053.11537-27.81477 EmG 03 32 27.68 -27 48 52.9           ~ 12 0
13 JADES-GS+053.11634-27.76194 EmG 03 32 27.91 -27 45 42.7           ~ 11 0
14 NAME GOODS Southern Field reg 03 32 28.0 -27 48 30           ~ 1623 1
15 JADES-GS+053.11730-27.76408 EmG 03 32 28.14 -27 45 50.4           ~ 15 0
16 JADES-GS+053.11775-27.81653 EmG 03 32 28.26 -27 48 59.5           ~ 2 0
17 JADES-GS+053.11817-27.79302 EmG 03 32 28.35 -27 47 34.6           ~ 5 0
18 JADES-GS+053.11833-27.76901 EmG 03 32 28.398 -27 46 08.44           ~ 12 0
19 JADES-GS+053.11911-27.76080 EmG 03 32 28.57 -27 45 38.6           ~ 12 0
20 JADES-GS+053.12176-27.79763 EmG 03 32 29.21 -27 47 51.2   29.613 29.883     ~ 41 0
21 JADES-GS+053.12259-27.76057 EmG 03 32 29.4096 -27 45 37.800           ~ 16 0
22 JADES-GS+053.12554-27.75505 EmG 03 32 30.12 -27 45 17.9           ~ 5 0
23 JADES-GS+053.12556-27.78676 EmG 03 32 30.136 -27 47 12.04 28.4463 28.5420 29.226     ~ 12 0
24 JADES-GS+053.12654-27.81809 AGN 03 32 30.37 -27 49 05.1           ~ 24 0
25 JADES-GS+053.12731-27.78805 EmG 03 32 30.550 -27 47 16.69           ~ 8 0
26 JADES-GS+053.13044-27.80236 EmG 03 32 31.304 -27 48 08.28   30.0154 30.79     ~ 12 0
27 NAME JADES-GS NS HSTd 6384 EmG 03 32 31.34 -27 48 27.8           ~ 5 0
28 HRG14 J033232.03-274537.1 EmG 03 32 32.03 -27 45 37.1     29.1     ~ 19 0
29 JADES-GS+053.13385-27.77858 EmG 03 32 32.12 -27 46 42.9           ~ 2 0
30 JADES-GS+053.13423-27.76891 EmG 03 32 32.215 -27 46 08.09           ~ 11 0
31 JADES-GS+053.13492-27.77271 EmG 03 32 32.37 -27 46 21.4           ~ 17 0
32 JADES-GS+053.13743-27.76519 EmG 03 32 32.97 -27 45 54.4           ~ 7 0
33 JADES-GS+053.13806-27.78186 EmG 03 32 33.128 -27 46 54.41           ~ 16 0
34 JADES-GS+053.14197-27.75523 EmG 03 32 34.06 -27 45 18.5           ~ 8 0
35 JADES-GS NS 3968 EmG 03 32 34.81 -27 48 59.1           ~ 4 0
36 JADES-GS+053.14771-27.71537 EmG 03 32 35.44 -27 42 55.0           ~ 10 0
37 JADES-GS+053.14902-27.78070 EmG 03 32 35.759 -27 46 50.29   30.8150       ~ 5 0
38 JADES-GS+053.14987-27.75283 EmG 03 32 35.96 -27 45 09.9           ~ 5 0
39 JADES-GS+053.15138-27.81917 EmG 03 32 36.331 -27 49 08.99           ~ 15 0
40 JADES-GS+053.15160-27.78791 EmG 03 32 36.378 -27 47 16.23         29.18 ~ 19 0
41 JADES-GS+053.15218-27.77840 EmG 03 32 36.519 -27 46 41.98         29.37 ~ 7 0
42 JADES-GS NC 110895 EmG 03 32 36.676 -27 48 06.75   31.3762       ~ 12 0
43 JADES-GS+053.15407-27.76607 EmG 03 32 36.972 -27 45 57.60           ~ 27 0
44 JADES-GS+053.15516-27.76072 EmG 03 32 37.230 -27 45 38.37           ~ 14 0
45 JADES-GS+053.15579-27.81520 EmG 03 32 37.389 -27 48 54.73           ~ 11 0
46 JADES-GS+053.15613-27.77584 EmG 03 32 37.464 -27 46 32.79   30.4935 29.65   27.72 ~ 19 0
47 JADES-GS+053.15682-27.76716 EmG 03 32 37.633 -27 46 01.51           ~ 39 0
48 JADES-GS NC 131067 EmG 03 32 38.12 -27 46 24.3           ~ 26 0
49 JADES-GS+053.15953-27.77152 EmG 03 32 38.282 -27 46 17.22   29.3328 30.49     ~ 28 0
50 JADES-GS+053.16062-27.77161 EmG 03 32 38.546 -27 46 17.53           ~ 29 0
51 FIGS GS1 2077 EmG 03 32 38.805 -27 47 07.15     31.6     ~ 40 0
52 JADES-GS+053.16238-27.80332 EmG 03 32 38.964 -27 48 11.66           ~ 9 0
53 GOODS J033239.06-274538.7 EmG 03 32 39.066 -27 45 38.75   30.7705 38.76     ~ 29 0
54 JADES-GS+053.16288-27.76928 EmG 03 32 39.087 -27 46 09.16           ~ 11 0
55 JADES-GS+053.16446-27.80218 EmG 03 32 39.471 -27 48 07.85           ~ 11 0
56 JADES-GS NC 130158 EmG 03 32 39.54 -27 46 28.5           ~ 43 0
57 JADES-GS+053.16483-27.78826 EmG 03 32 39.555 -27 47 17.49   30.3455       ~ 23 0
58 JADES-GS+053.16556-27.77266 EmG 03 32 39.728 -27 46 21.33   31.1568       ~ 18 0
59 GLARE 1004 AGN 03 32 39.864 -27 46 19.08   29.9603 32.55     ~ 26 0
60 JADES-GS+053.16660-27.77240 EmG 03 32 39.980 -27 46 20.38   30.1578       ~ 8 0
61 JADES-GS+053.16713-27.79424 EmG 03 32 40.102 -27 47 39.00           ~ 8 0
62 JADES-GS+053.16730-27.80287 EmG 03 32 40.148 -27 48 10.08           ~ 9 0
63 JADES-GS NC 107324 EmG 03 32 40.16 -27 48 27.0           ~ 6 0
64 JADES-GS+053.16746-27.77201 EmG 03 32 40.19 -27 46 19.0           ~ 25 0
65 JADES-GS+053.16900-27.80079 EmG 03 32 40.555 -27 48 02.59     32.72     ~ 14 0
66 JADES-GS+053.16904-27.77884 EmG 03 32 40.566 -27 46 43.55   31.0031     29.57 ~ 36 0
67 JADES-GS+053.16951-27.75331 EmG 03 32 40.6750 -27 45 11.624           ~ 10 0
68 GLARE 1001 EmG 03 32 41.430 -27 46 01.24   30.5230 31.84     ~ 11 0
69 JADES-GS+053.17324-27.79567 EmG 03 32 41.571 -27 47 44.21     30.43     ~ 15 0
70 JADES-GS+053.17350-27.82507 EmG 03 32 41.6333 -27 49 30.058           ~ 6 0
71 JADES-GS+053.17582-27.77446 EmG 03 32 42.191 -27 46 27.82         28.77 ~ 22 0
72 JADES-GS+053.17655-27.77111 EmG 03 32 42.367 -27 46 15.73           ~ 22 0
73 JADES-GS+053.17688-27.78156 EmG 03 32 42.45 -27 46 53.4           ~ 6 0
74 GLARE 1045 EmG 03 32 42.595 -27 48 08.82           ~ 14 0
75 JADES-GS+053.17834-27.80097 EmG 03 32 42.797 -27 48 03.25           ~ 18 0
76 GLARE 3002 EmG 03 32 43.34 -27 49 20.3           ~ 11 0
77 JADES-GS+053.18302-27.78946 EmG 03 32 43.92 -27 47 22.1           ~ 2 0
78 JADES-GS+053.18343-27.79097 EmG 03 32 44.02 -27 47 27.5           ~ 6 0
79 JADES-GS+053.18374-27.79390 EmG 03 32 44.10 -27 47 38.0           ~ 3 0
80 JADES-GS+053.18714-27.80129 EmG 03 32 44.91 -27 48 04.6           ~ 2 0
81 JADES-GS+053.19105-27.79731 EmG 03 32 45.849 -27 47 50.10           ~ 3 0
82 JADES-GS+053.19588-27.76843 EmG 03 32 47.01 -27 46 06.3           ~ 2 0
83 JADES-GS+053.19660-27.81345 EmG 03 32 47.18 -27 48 48.4           ~ 2 0
84 JADES-GS+053.19938-27.79627 EmG 03 32 47.849 -27 47 46.36   30.7075       ~ 10 0
85 JADES-GS+053.20800-27.79005 EmG 03 32 49.918 -27 47 23.92           ~ 9 0
86 JADES-GS+053.21160-27.79639 EmG 03 32 50.78 -27 47 46.7           ~ 8 0
87 [OBV2016] GN-z11 EmG 12 36 25.46 +62 14 31.4           ~ 247 0
88 NAME GOODS-N Field reg 12 36 55.0 +62 14 15           ~ 1364 1
89 IOK 1 G 13 23 59.766 +27 24 55.75           ~ 55 0
90 NAME Subaru Deep Field NGP reg 13 24 21.3 +27 29 23           ~ 330 1
91 NAME Extended Groth Strip reg 14 19 +52.8           ~ 1023 0
92 NAME EGSY8p7 EmG 14 20 08.50 +52 53 26.6           ~ 101 0
93 NAME EGS-zs8-2 EmG 14 20 12.08 +53 00 26.9           ~ 29 0
94 NAME EGS-zs8-1 G 14 20 34.893 +53 00 15.33           ~ 42 0
95 CANDELS EGS F160W J142052.5+530411.5 EmG 14 20 52.51 +53 04 11.7           ~ 25 0

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