J/ApJ/960/104 JWST/NIRCam data of CEERS galaxies at 4<z<9.5 (Sun+, 2024)
The structure and morphology of galaxies during the epoch of reionization
revealed by JWST.
Sun W., Ho L.C., Zhuang M.-Y., Ma C., Chen C., Li R.
<Astrophys. J., 960, 104 (2024)>
=2024ApJ...960..104S 2024ApJ...960..104S
ADC_Keywords: Galaxies, IR; Photometry, infrared; Redshifts; Galaxies, radius;
Morphology
Keywords: Early universe ; Galaxy formation ; Galaxy evolution ;
High-redshift galaxies
Abstract:
We analyze 347 galaxies at redshift 4<z<9.5 using JWST observations
from the Cosmic Evolution Early Release Science (CEERS) program by
simultaneously fitting a two-dimensional parametric model to the
seven-filter Near Infrared Camera images to measure the overall
structural parameters and quantify the global properties of the
galaxies in the rest-frame optical band. Particular attention is
devoted to deriving robust uncertainties that include, among other
factors, the influence of cosmological surface brightness dimming and
resolution effects. Using the global Sersic index (n<1.5) and observed
axial ratio (q<0.6) as a guide, we place a conservative lower limit of
∼45% on the incidence of galactic disks. Galaxies follow a relation
between the rest-frame optical luminosity and effective radius in the
redshift range 4<z<9.5, as well as separately over the intervals 4<z<5
and 5≤z<9.5, with a very similar slope but a marginally lower
zero-point in the higher-redshift bin (Re=0.69±0.05kpc) compared
to the lower-redshift bin (Re=0.91±0.04kpc). Within the
limitations of the current sample size, we find no significant
redshift evolution of n or Re at these early epochs.
Description:
We analyze the first 4 of the 10 Cosmic Evolution Early Release
Science (CEERS) program JWST NIRCam pointings (CEERS1, CEERS2, CEERS3,
and CEERS6) obtained on 2022 June 21, which cover 34.5arcmin2 of the
Extended Groth Strip (EGS). Each pointing uses the filters F115W,
F150W, and F200W in the short-wavelength (SW) channel and the filters
F277W, F356W, F410M, and F444W in the long-wavelength (LW) channel.
The total exposure time per filter is typically 2835s for pixels
observed in all three dithers.
We assume the latest Planck flat ΛCDM cosmology with
H0=67.36km/s/Mpc, Ωm=0.3153, and ΩΛ=0.6847.
All magnitudes are in the absolute bolometric (AB) system.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 190 347 Measurements of magnitudes and structural
parameters
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See also:
I/337 : Gaia DR1 (Gaia Collaboration, 2016)
J/ApJ/453/48 : VI photometry of HST faint field galaxies (Driver+ 1995)
J/ApJS/107/1 : Morphologies of distant galaxies II (Abraham+ 1996)
J/ApJS/147/1 : Classification of nearby galaxies (Conselice+, 2003)
J/AJ/127/131 : NICMOS early-type galaxies (Stanford+, 2004)
J/ApJS/172/615 : GALFIT result for GEMS galaxies (Haussler+, 2007)
J/ApJ/659/162 : CAS parameters of 199 nearby galaxies (Taylor-Mager+, 2007)
J/MNRAS/382/109 : Massive galaxies in Extended Groth Strip (Trujillo+, 2007)
J/ApJS/197/21 : The Carnegie-Irvine Galaxy Survey (CGS). I. (Ho+, 2011)
J/ApJS/197/22 : The Carnegie-Irvine Galaxy Survey (GGS). II. (Li+, 2011)
J/MNRAS/428/1460 : Massive early-type galaxies (Buitrago+, 2013)
J/ApJ/775/106 : CANDELS passive & massive early-type gal. (Cassata+, 2013)
J/MNRAS/435/623 : Multiwavelength measurement of galaxy structure (Vika, 2013)
J/ApJS/221/11 : CANDELS visual classif. for GOODS-S (Kartaltepe+, 2015)
J/ApJS/219/15 : Morphologies of z=0-10 gal. with HST data (Shibuya+, 2015)
J/ApJS/229/32 : CANDELS: multiwavelength cat. in the EGS (Stefanon+, 2017)
J/A+A/647/A89 : The OTELO survey as morphological probe (Nadolny+, 2021)
J/ApJ/929/121 : Bulge & disk data from SHARDS & HST (Costantin+, 2022)
J/A+A/664/A92 : GAMA. MegaMorp/GalfitM profile fits (Haeussler+, 2022)
J/MNRAS/517/484 : JWST NIRCam photometry of M 92 stars (Nardiello+, 2022)
J/ApJ/934/130 : PS1 3π analysis of z∼0.3 QSOs host gal. (Zhuang+, 2022)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 4 A4 --- --- [EGS-]
5- 9 I5 --- [SYM2017] Galaxy name from
Stefanon+ (2017, J/ApJS/229/32)
11- 28 F18.14 deg RAdeg [214.7/215.1] Right Ascension (J2000)
30- 46 F17.14 deg DEdeg [52.7/53.1] Declination (J2000)
48- 51 F4.2 --- zphot [4.01/9.63] Photometric redshift from
Stefanon+ (2017, J/ApJS/229/32)
53- 57 F5.2 [Msun] logMs [7.04/11.36] Stellar mass from
Stefanon+ (2017, J/ApJS/229/32)
59- 62 F4.2 [Msun] e_logMs [0.01/1.67] Mean error on logMs
64- 68 F5.2 mag F115Wmag [23.06/32.1] Apparent AB magnitude in
JWST/NIRCam F115W filter
70- 73 F4.2 mag e_F115Wmag [0.01/4.83] Mean error on F115Wmag
75- 79 F5.2 mag F150Wmag [22.6/31.93] Apparent AB magnitude in
JWST/NIRCam F150W filter
81- 84 F4.2 mag e_F150Wmag [0.01/4.93] Mean error on F150Wmag
86- 90 F5.2 mag F200Wmag [22.41/33.4] Apparent AB magnitude in
JWST/NIRCam F200W filter
92- 95 F4.2 mag e_F200Wmag [0.01/4.98] Mean error on F200Wmag
97- 101 F5.2 mag F277Wmag [22.59/31.3] Apparent AB magnitude in
JWST/NIRCam F277W filter
103- 106 F4.2 mag e_F277Wmag [0.01/4.19] Mean error on F277Wmag
108- 112 F5.2 mag F356Wmag [22.1/30.47] Apparent AB magnitude in
JWST/NIRCam F356W filter
114- 117 F4.2 mag e_F356Wmag [0.01/3.09] Mean error on F356Wmag
119- 123 F5.2 mag F410Mmag [21.7/32.45] Apparent AB magnitude in
JWST/NIRCam F410M filter
125- 128 F4.2 mag e_F410Mmag [0.01/5.18] Mean error on F410Mmag
130- 134 F5.2 mag F444Wmag [21.52/31.41] Apparent AB magnitude in
JWST/NIRCam F444W filter
136- 139 F4.2 mag e_F444Wmag [0.01/6.0] Mean error on F444Wmag
141- 145 A5 --- Band The rest-frame optical band
147- 150 F4.2 --- n [0.2/9.0] Sersic index n in the rest-frame
optical band
152- 156 F5.2 --- e_n [0.02/78.39] Mean error on n
158- 161 F4.2 kpc Re [0.03/7.41] Half-light radius Re in the
rest-frame optical band
163- 166 F4.2 kpc e_Re [0.03/2.85] Mean error on Re
168- 171 F4.2 --- q [0.04/0.98] Axis ratios q in the rest-frame
optical band
173- 176 F4.2 --- e_q [0.01/3.06] Mean error on q
178- 182 F5.1 deg PA [0.4/179.8] Position angle PA in the
rest-frame optical band
184- 188 F5.1 deg e_PA [2.2/134.7] Mean error on PA
190 I1 --- Qual [1/2] Quality flag (1)
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Note (1): Quality flag as follows:
1 = chi2ν ≤ 1.9;
2 = chi2ν > 1.9.
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History:
From electronic version of the journal
(End) Prepared by [AAS], Emmanuelle Perret [CDS] 19-Mar-2026