The Cosmos in Its Infancy: JADES Galaxy Candidates at z > 8 in GOODS-S and GOODS-N
The Cosmos in Its Infancy: JADES Galaxy Candidates at z > 8 in GOODS-S and GOODS-N
Mar 18, 2024·,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,
Kevin N. Hainline
Benjamin D. Johnson
Brant Robertson
Sandro Tacchella
Jakob M. Helton
Fengwu Sun
Daniel J. Eisenstein
Charlotte Simmonds
Michael W. Topping
Lily Whitler
Christopher N. A. Willmer
Marcia Rieke
Katherine A. Suess
Raphael E. Hviding
Alex J. Cameron
Stacey Alberts
William M. Baker
Stefi Baum
Rachana Bhatawdekar
Nina Bonaventura
Kristan Boyett
Andrew J. Bunker
Stefano Carniani
Stephane Charlot
Jacopo Chevallard
Zuyi Chen
Mirko Curti
Emma Curtis-Lake
Francesco D'Eugenio
Eiichi Egami
Ryan Endsley
Ryan Hausen
Zhiyuan Ji
Tobias J. Looser
Jianwei Lyu
Roberto Maiolino
Erica Nelson
Dávid Puskás
Tim Rawle
Lester Sandles
Aayush Saxena
Renske Smit
Daniel P. Stark
Christina C. Williams
Chris Willott
Joris Witstok
Abstract
We present a catalog of $717$
candidate galaxies at $z > 8$
selected from $125\ \mathrm{square\ arcmin}$
of NIRCam imaging as part of the JWST Advanced Deep Extragalactic Survey (JADES). We combine the full JADES imaging data set with data from the JWST Extragalactic Medium Survey and First Reionization Epoch Spectroscopic COmplete Survey (FRESCO) along with extremely deep existing observations from Hubble Space Telescope (HST)/Advanced Camera for Surveys (ACS) for a final filter set that includes $15$
JWST/NIRCam filters and five HST/ACS filters. The high-redshift galaxy candidates were selected from their estimated photometric redshifts calculated using a template-fitting approach, followed by visual inspection from seven independent reviewers. We explore these candidates in detail, highlighting interesting resolved or extended sources, sources with very red long-wavelength slopes, and our highest-redshift candidates, which extend to $z_{\mathrm{phot}} \sim 18$
. Over $93\%$
of the sources are newly identified from our deep JADES imaging, including $31$
new galaxy candidates at $z_{\mathrm{phot}} > 12$
. We also investigate potential contamination by stellar objects, and do not find strong evidence from spectral energy distribution fitting that these faint high-redshift galaxy candidates are low-mass stars. Using $42$
sources in our sample with measured spectroscopic redshifts from NIRSpec and FRESCO, we find excellent agreement to our photometric redshift estimates, with no catastrophic outliers and an average difference of $\langle \Delta z \rangle = \langle z_{\mathrm{phot}} - z_{\mathrm{spec}} \rangle = 0.26$
. These sources comprise one of the most robust samples for probing the early buildup of galaxies within the first few hundred million years of the Universe’s history.
Type
Publication
The Astrophysical Journal, Volume 964, Issue 1, id.71, 35 pages
Related
- JEMS: A Deep Medium-band Imaging Survey in the Hubble Ultra Deep Field with JWST NIRCam and NIRISS
- JADES: Resolving the Stellar Component and Filamentary Overdense Environment of Hubble Space Telescope (HST)-dark Submillimeter Galaxy HDF850.1 at z = 5.18
- Morpheus Reveals Distant Disk Galaxy Morphologies with JWST: The First AI/ML Analysis of JWST Images
- Brown Dwarf Candidates in the JADES and CEERS Extragalactic Surveys
- The JWST Advanced Deep Extragalactic Survey: Discovery of an Extreme Galaxy Overdensity at z = 5.4 with JWST/NIRCam in GOODS-S