J/AJ/168/113 Massive galaxies at z>4 from JWST CEERS (Chworowsky+, 2024)
Evidence for a shallow evolution in the volume densities of massive galaxies at
z=4-8 from CEERS.
Chworowsky K., Finkelstein S.L., Boylan-Kolchin M., McGrath E.J.,
Iyer K.G., Papovich C., Dickinson M., Taylor A.J., Yung L.Y.A.,
Arrabal Haro P., Bagley M.B., Backhaus B.E., Bhatawdekar R., Cheng Y.,
Cleri N.J., Cole J.W., Cooper M.C., Costantin L., Dekel A., Franco M.,
Fujimoto S., Hayward C.C., Holwerda B.W., Huertas-Company M.,
Hirschmann M., Hutchison T.A., Koekemoer A.M., Larson R.L., Li Z.,
Long A.S., Lucas R.A., Pirzkal N., Rodighiero G., Somerville R.S.,
Vanderhoof B.N., de la Vega A., Wilkins S.M., Yang G., Zavala J.A.
<Astron. J., 168, 113 (2024)>
=2024AJ....168..113C 2024AJ....168..113C
ADC_Keywords: Galaxies, IR; Redshifts; Spectra, infrared; Photometry, infrared;
Stars, masses
Keywords: Galaxy evolution ; Galaxy formation ; High-redshift galaxies ;
Galactic and extragalactic astronomy
Abstract:
We analyze the evolution of massive (log10[M*/M☉]>10)
galaxies at z∼1-4 selected from JWST Cosmic Evolution Early Release
Survey (CEERS). We infer the physical properties of all galaxies in
the CEERS NIRCam imaging through spectral energy distribution (SED)
fitting with dense basis to select a sample of high-redshift massive
galaxies. Where available we include constraints from additional CEERS
observing modes, including 18 sources with MIRI photometric coverage,
and 28 sources with spectroscopic confirmations from NIRSpec or NIRCam
WFSS. We sample the recovered posteriors in stellar mass from SED
fitting to infer the volume densities of massive galaxies across
cosmic time, taking into consideration the potential for sample
contamination by active galactic nuclei. We find that the evolving
abundance of massive galaxies tracks expectations based on a constant
baryon conversion efficiency in dark matter halos for z∼1-4. At higher
redshifts, we observe an excess abundance of massive galaxies relative
to this simple model, resulting in a shallower decline of observed
volume densities of massive galaxies. These higher abundances can be
explained by modest changes to star formation physics and/or the
efficiencies with which star formation occurs in massive dark matter
halos, and are not in tension with modern cosmology.
Description:
We perform our analysis on the publicly released JWST Cosmic Evolution
Early Release Surveys (CEERS) NIRCam mosaics (Data Releases 0.5 and
0.6), which include imaging from 1 to 5um in F115W, F150W, F200W,
F277W, F356W, F410M, and F444W and cover 10 pointings in the Extended
Groth Strip. The CEERS observations were completed and reduced over
two epochs. Epoch 1 NIRCam pointings 1, 2, 3, and 6 were obtained in
parallel to the Mid-Infrared Instrument (MIRI) imaging in June 2022.
The epoch 2 observations released with CEERS DR0.6 include NIRCam
imaging over pointings 4, 5, 7, 8, 9, and 10 obtained in 2022 December
in parallel to NIRSpec microshutter assembly observations. Pointings
5, 7, 8, and 9 were also observed with NIRCam Wide Field Slitless
Spectroscopy (WFSS) with MIRI imaging in parallel.
We make use of the photometric catalog from
Finkelstein+ (2024ApJ...969L...2F 2024ApJ...969L...2F), which also includes the available
HST imaging in this field from CEERS HST Data Release 1, including the
Advanced Camera for Surveys F606W and F814W filters and WFC3 F105W,
F125W, F140W, and F160W filters from HST programs including CANDELS.
The CEERS survey includes MIRI imaging conducted over eight pointings,
with four blue pointings (P3, P6, P7, and P9) providing deep imaging
with F560W and F770W and four with contiguous wavelength coverage in
F1000W, F1280W, F1500W, and F1800W (P1, P2, P5, and P8). Two of these
pointings (P1 and P2) also include coverage in F770W and F2100W. These
observations were performed in two epochs, in 2022 Jun and 2022 Dec.
See Section 2.2.
CEERS also includes coverage with NIRSpec with the prism and F356W
WFSS observations. See Section 2.3.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 74 120 Properties of the JWST Cosmic Evolution Early
Release Survey (CEERS) massive galaxy sample
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See also:
J/A+A/523/A64 : UV properties of starbursts (Raiter+, 2010)
J/ApJ/777/18 : Stellar mass functions of galaxies to z=4 (Muzzin+, 2013)
J/MNRAS/462/4336 : GAMA. Stellar mass budget (Moffett+, 2016)
J/ApJS/229/32 : CANDELS: multiwavelength cat. in the EGS (Stefanon+, 2017)
J/ApJ/898/171 : CLEAR. II. SFRs of quiescent gal. (Estrada-Carpenter+, 2020)
J/ApJS/253/4 : SuperBoRG: HST parallel imaging data (Morishita, 2021)
J/ApJS/258/11 : The COSMOS2020 catalog (Weaver+, 2022)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 6 I6 --- CEERS [1179/100748] CEERS identifier
8- 16 F9.5 deg RAdeg [214.7/215.2] Right Ascension (J2000)
18- 25 F8.5 deg DEdeg [52.7/53.1] Declination (J2000)
27- 30 F4.1 mag F277Wmag [22.9/27.4] Apparent JWST F277W band AB
magnitude
32- 36 F5.2 [Msun] logMs [10/11] Log stellar mass
38- 41 F4.2 [Msun] E_logMs [0/0.4] Upper uncertainty in logMs
43- 46 F4.2 [Msun] e_logMs [0.07/1] Lower uncertainty in logMs
48- 51 F4.2 --- zphot [4/7.64] Photometric redshift
53- 56 F4.2 --- E_zphot [0/0.6] Upper uncertainty in zphot
58- 61 F4.2 --- e_zphot [0/0.7] Lower uncertainty in zphot
63- 66 F4.2 --- zspec [4.48/6.75]?=0 Spectroscopic redshift
68 I1 --- MIRI [0/1] Available MIRI detection (1=true)
70 I1 --- ERO [0/1] Classified as an "extremely red
object" (1=true)
72 I1 --- WFSS [0/1] 1=NIRCam WFSS spectroscopic redshift
74 I1 --- PRISM [0/1] 1=NIRSpec spectroscopic redshift
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History:
From electronic version of the journal
(End) Prepared by [AAS], Emmanuelle Perret [CDS] 27-Nov-2024