Hakim Atek
Revealing galaxy candidates out to z ∼ 16 with JWST observations of the lensing cluster SMACS0723
Atek, Hakim; Shuntov, Marko; Furtak, Lukas J; Richard, Johan; Kneib, Jean-Paul; Mahler, Guillaume; Zitrin, Adi; McCracken, HJ; Charlot, Stéphane; Chevallard, Jacopo; Chemerynska, Iryna
Authors
Marko Shuntov
Lukas J Furtak
Johan Richard
Jean-Paul Kneib
Dr Guillaume Mahler guillaume.mahler@durham.ac.uk
Academic Visitor
Adi Zitrin
HJ McCracken
Stéphane Charlot
Jacopo Chevallard
Iryna Chemerynska
Abstract
One of the main goals of the JWST is to study the first galaxies in the Universe. We present a systematic photometric analysis of very distant galaxies in the first JWST deep field towards the massive lensing cluster SMACS0723. As a result, we report the discovery of two galaxy candidates at z ∼ 16, only 250 million years after the big bang. We also identify two candidates at z ∼ 12 and six candidates at z ∼ 9−11. Our search extended out to z 21 by combining colour information across seven near-infrared camera and near-infrared imager and slitless spectrograph filters. By modelling the Spectral Energy Distributions (SEDs) with EAZY and BEAGLE, we test the robustness of the photometric redshift estimates. While their intrinsic (unlensed) luminosity is typical of the characteristic luminosity L∗ at z > 10, our high-redshift galaxies typically show small sizes and their morphologies are consistent with disks in some cases. The highest-redshift candidates have extremely blue ultraviolet-continuum slopes −3 < β < −2.4, young ages ∼10−100 Myr, and stellar masses around log (M/M) = 8.8 inferred from their spectral energy distribution modelling, which indicate a rapid build-up of their stellar mass. Our search clearly demonstrates the capabilities of JWST to uncover robust photometric candidates up to very high redshifts and peer into the formation epoch of the first galaxies.
Citation
Atek, H., Shuntov, M., Furtak, L. J., Richard, J., Kneib, J., Mahler, G., …Chemerynska, I. (2023). Revealing galaxy candidates out to z ∼ 16 with JWST observations of the lensing cluster SMACS0723. Monthly Notices of the Royal Astronomical Society, 519(1), 1201 - 1220. https://doi.org/10.1093/mnras/stac3144
Journal Article Type | Article |
---|---|
Acceptance Date | Oct 28, 2022 |
Online Publication Date | Dec 23, 2022 |
Publication Date | 2023-02 |
Deposit Date | May 10, 2023 |
Publicly Available Date | May 11, 2023 |
Journal | Monthly Notices of the Royal Astronomical Society |
Print ISSN | 0035-8711 |
Electronic ISSN | 1365-2966 |
Publisher | Royal Astronomical Society |
Peer Reviewed | Peer Reviewed |
Volume | 519 |
Issue | 1 |
Pages | 1201 - 1220 |
DOI | https://doi.org/10.1093/mnras/stac3144 |
Public URL | https://durham-repository.worktribe.com/output/1174753 |
Files
Published Journal Article
(4.7 Mb)
PDF
You might also like
The COSMOS-Web ring: In-depth characterization of an Einstein ring lensing system at z ∼ 2
(2024)
Journal Article
TEMPLATES: Characterization of a Merger in the Dusty Lensing SPT0418–47 System
(2024)
Journal Article
Downloadable Citations
About Durham Research Online (DRO)
Administrator e-mail: dro.admin@durham.ac.uk
This application uses the following open-source libraries:
SheetJS Community Edition
Apache License Version 2.0 (http://www.apache.org/licenses/)
PDF.js
Apache License Version 2.0 (http://www.apache.org/licenses/)
Font Awesome
SIL OFL 1.1 (http://scripts.sil.org/OFL)
MIT License (http://opensource.org/licenses/mit-license.html)
CC BY 3.0 ( http://creativecommons.org/licenses/by/3.0/)
Powered by Worktribe © 2024
Advanced Search