2019ApJ...878...12H

Query : 2019ApJ...878...12H

2019ApJ...878...12H - Astrophys. J., 878, 12-12 (2019/June-2)

Constraining the neutral fraction of hydrogen in the IGM at redshift 7.5.

HOAG A., BRADAC M., HUANG K., MASON C., TREU T., SCHMIDT K.B., TRENTI M., STRAIT V., LEMAUX B.C., FINNEY E.Q. and PADDOCK M.

Abstract (from CDS):

We present a large spectroscopic campaign with Keck/Multi-Object Spectrometer for InfraRed Exploration (MOSFIRE) targeting Lyα emission (Lyα) from intrinsically faint Lyman-break galaxies (LBGs) behind 12 efficient galaxy cluster lenses. Gravitational lensing allows us to probe the more abundant faint galaxy population to sensitive Lyα equivalent-width limits. During the campaign, we targeted 70 LBG candidates with the MOSFIRE Y band, selected photometrically to cover Lyα over the range 7 < z < 8.2. We detect signal-to-noise ratio > 5 emission lines in two of these galaxies and find that they are likely Lyα at z = 7.148 ± 0.001 and z = 7.161 ± 0.001. We present new lens models for four of the galaxy clusters, using our previously published lens models for the remaining clusters to determine the magnification factors for the source galaxies. Using a Bayesian framework that employs large-scale reionization simulations of the intergalactic medium (IGM) as well as realistic properties of the interstellar medium and circumgalactic medium, we infer the volume-averaged neutral hydrogen fraction, HI, in the IGM during reionization to be HI=0.88–0.10+0.05 at z = 7.6 ± 0.6. Our result is consistent with a late and rapid reionization scenario inferred by Planck.

Abstract Copyright: © 2019. The American Astronomical Society. All rights reserved.

Journal keyword(s): dark ages, reionization, first stars - galaxies: high-redshift - gravitational lensing: strong

Nomenclature: Table 5: [HBH2019] ANNNN-NNN, [HBH2019] MACSHHMM-NNN, [HBH2019] RXJ1347-NNN, [HBH2019] RCS2327-NNN, N=70.

Simbad objects: 83

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Number of rows : 83
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 [ARK2015] 2884 G 00 14 16.2647 -30 24 04.604         31.01 ~ 6 0
2 [ZSM2014] YD2 LeG 00 14 17.404 -30 24 47.76           ~ 8 0
3 [ARK2015] 2800 LeG 00 14 19.1625 -30 24 05.735         30.99 ~ 8 0
4 [ARK2014] 1127 LeG 00 14 19.3086 -30 24 18.151         29.55 ~ 15 0
5 ACO 2744 ClG 00 14 20.03 -30 23 17.8           ~ 823 0
6 [ARK2015] 4358 G 00 14 20.6999 -30 23 33.749         30.1141 ~ 5 0
7 [ARK2015] 6504 LeG 00 14 21.3551 -30 22 43.194     29.0681   29.7281 ~ 14 0
8 [ARK2015] 5202 LeG 00 14 23.0624 -30 23 08.992           ~ 19 0
9 [LFL2017] A2744 z6 1391 LeG 00 14 23.2541 -30 23 25.634         31.00 ~ 6 0
10 [ARK2014] 3761 LeG 00 14 23.4802 -30 23 45.456   29.7068     29.64 ~ 16 0
11 [ARK2014] 2070 LeG 00 14 25.0846 -30 22 49.674   29.7772       ~ 21 0
12 [ARK2015] 1184 G 00 14 25.0959 -30 24 33.700         30.0639 ~ 12 0
13 [HBH2019] A370-007 G 02 39 47.579 -01 35 11.51           ~ 1 0
14 [HBH2019] A370-009 G 02 39 47.836 -01 36 19.00           ~ 1 0
15 [LBL2018] A370 cluster 33 G 02 39 49.3169 -01 34 21.363           ~ 2 0
16 ACO 370 ClG 02 39 50.5 -01 35 08           ~ 752 0
17 [DSB2018] A370 11.2.1 LeG 02 39 50.583 -01 34 26.97           ~ 6 0
18 [DSB2018] A370 11.1.1 LeG 02 39 51.313 -01 34 09.70           ~ 7 0
19 [HBH2019] A370-008 G 02 39 51.505 -01 36 49.33           ~ 1 0
20 [IKO2018] HFF6C-5187-5411 G 02 39 51.872 -01 35 41.18           ~ 3 0
21 [HBH2019] A370-003 G 02 39 53.507 -01 34 11.94           ~ 1 0
22 [IKO2018] HFF6C-5420-5141 G 02 39 54.210 -01 35 14.14           ~ 3 0
23 [IKO2018] HFF6C-5578-4519 G 02 39 55.782 -01 34 51.95           ~ 3 0
24 [MAC2016] M0416cl 218 G 04 16 06.581 -24 05 23.92   27.5364 27.2506   29.9415 ~ 4 0
25 [HBH2019] MACS0416-028 G 04 16 07.430 -24 03 34.86     28.9358   29.8246 ~ 5 0
26 MCS J0416.1-2403 ClG 04 16 08.380 -24 04 20.80           ~ 341 0
27 [MAC2016] M0416cl 2385 G 04 16 10.350 -24 03 28.47           ~ 6 0
28 [IKO2018] HFF2C-1105-5392 G 04 16 11.054 -24 05 39.29           ~ 7 0
29 [MAC2016] M0416cl 158 G 04 16 11.090 -24 05 28.84           ~ 5 0
30 [BCM2019b] 1040 LeG 04 16 11.515 -24 04 53.99           ~ 16 0
31 [MAC2016] M0416cl 1997 LeG 04 16 11.900 -24 03 52.55           ~ 6 0
32 NAME Zheng-4008 G 04 16 14.480 -24 03 53.86         31.47 ~ 12 0
33 [HBH2019] MACS0454-050 G 04 54 08.637 -02 59 51.64           ~ 1 0
34 ClG 0451-03 ClG 04 54 10.9 -03 01 07     20.0     ~ 353 0
35 [HBH2019] MACS0454-049 G 04 54 12.317 -03 00 15.43           ~ 1 0
36 [HBL2016] MACS 0454-1817 G 04 54 12.433 -03 00 03.66           ~ 2 0
37 ClG J0717+3745 ClG 07 17 36.50 +37 45 23.0           ~ 467 0
38 [HBH2019] MACS0744-062 G 07 44 51.064 +39 28 05.28           ~ 1 0
39 [HBH2019] MACS0744-065 G 07 44 51.441 +39 28 19.40           ~ 1 0
40 ClG J0744+3927 ClG 07 44 52.5 +39 27 30           ~ 181 0
41 CLASH MACSJ0744.9+3927 225 LeG 07 44 53.0066 +39 28 25.189           ~ 2 0
42 [HBH2019] MACS0744-067 G 07 44 53.701 +39 27 01.56           ~ 1 0
43 [HBH2019] MACS0744-066 G 07 44 55.234 +39 28 33.90           ~ 1 0
44 [HBH2019] MACS0744-063 G 07 44 56.222 +39 28 21.34           ~ 1 0
45 CLASH MACSJ0744.9+3927 1026 LeG 07 44 59.1560 +39 27 37.494           ~ 3 0
46 [HBL2016] MACS 0744-2088 LeG 07 45 00.097 +39 27 10.84           ~ 3 0
47 [HBH2019] MACS1149-011 G 11 49 34.254 +22 23 04.97           ~ 1 0
48 [ZZI2017] 4267 LeG 11 49 34.69 +22 22 56.3           ~ 2 0
49 MCS J1149.5+2223 ClG 11 49 35.8 +22 23 55           ~ 464 0
50 [IKO2018] HFF4C-3705-4446 G 11 49 37.058 +22 24 44.63           ~ 5 0
51 [HBH2019] MACS1149-012 LeG 11 49 38.899 +22 23 20.61           ~ 7 0
52 [IKO2018] HFF4C-4025-5027 LeG 11 49 40.26 +22 25 02.8           ~ 6 0
53 QSO J1342+0928 QSO 13 42 08.100 +09 28 38.36           ~ 116 0
54 [HBH2019] RXJ1347-015 G 13 47 28.129 -11 45 23.95           ~ 1 0
55 ClG J1347-1145 ClG 13 47 30.5 -11 45 07           ~ 549 0
56 [STB2016] GLASS RXJ1347 01708 LeG 13 47 31.755950 -11 44 31.85775           ~ 2 0
57 CLASH RXJ1347-1145 471 LeG 13 47 32.9081 -11 44 42.048         27.6 ~ 3 0
58 [BBZ2014] J134733.89-114509.3 G 13 47 33.897 -11 45 09.34           ~ 5 0
59 [STB2016] GLASS RXJ1347 00627 LeG 13 47 34.338192 -11 45 36.85432           ~ 2 0
60 [FLB2020] MACS1423.13 EmG 14 23 42.914688 +24 05 02.06047           ~ 4 0
61 [HBH2019] MACS1423-043 G 14 23 44.011 +24 04 15.52           ~ 1 0
62 [HBH2019] MACS1423-041 G 14 23 44.143 +24 04 47.82           ~ 1 0
63 [HBH2019] MACS1423-044 G 14 23 44.333 +24 03 48.94           ~ 1 0
64 [FLB2020] MACS1423.26 EmG 14 23 44.609 +24 04 42.29           ~ 5 0
65 [HBL2016] MACS 1423-1384 G 14 23 46.108 +24 04 45.84           ~ 3 0
66 [HBT2017] MACS1423-z7p64 G 14 23 46.177 +24 04 10.76           ~ 4 0
67 [HBL2016] MACS 1423-2097 G 14 23 46.928 +24 04 20.76           ~ 4 0
68 [STB2016] GLASS MACS1423 01412 LeG 14 23 47.498021 +24 04 56.82333           ~ 2 0
69 ClG J1423+2404 ClG 14 23 47.7 +24 04 40           ~ 210 0
70 [HBH2019] MACS1423-038 G 14 23 49.951 +24 04 37.26           ~ 1 0
71 [HBH2019] MACS2129-023 G 21 29 22.860 -07 40 17.08           ~ 1 0
72 CLASH MACSJ2129.4-0741 464 G 21 29 23.6192 -07 40 48.825         29.0 ~ 2 0
73 [STB2016] GLASS MACS2129 01792 LeG 21 29 24.203753 -07 40 30.87959           ~ 2 0
74 [FLB2020] MACS2129.31 EmG 21 29 24.778 -07 41 51.03           ~ 8 0
75 ClG J2129-0741 ClG 21 29 26.0 -07 41 28           ~ 173 0
76 [FLB2020] MACS2129.5 EmG 21 29 27.406 -07 42 06.98           ~ 3 0
77 [HBH2019] MACS2214-036 G 22 14 52.060 -14 00 08.80           ~ 1 0
78 ACT-CL J2214.9-1359 ClG 22 14 57.3 -14 00 12           ~ 89 0
79 [HBH2019] MACS2214-037 G 22 14 57.436 -14 01 36.87           ~ 1 0
80 [HBH2019] RCS2327-020 G 23 27 24.542 -02 03 45.70           ~ 1 0
81 [HBH2019] RCS2327-021 G 23 27 25.462 -02 05 35.62           ~ 1 0
82 ACT-CL J2327.4-0204 ClG 23 27 27.60 -02 04 37.4           ~ 39 0
83 [HBH2015] RCS2327-1282 G 23 27 31.343 -02 04 34.65           ~ 3 0

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