Jared Cathey
TEMPLATES: Characterization of a Merger in the Dusty Lensing SPT0418–47 System
Cathey, Jared; Gonzalez, Anthony H.; Lower, Sidney; Phadke, Kedar A.; Spilker, Justin; Aravena, Manuel; Bayliss, Matthew; Birkin, Jack E.; Birrer, Simon; Chapman, Scott; Dahle, Håkon; Hayward, Christopher C.; Hezaveh, Yashar; Hill, Ryley; Hutchison, Taylor A.; Kim, Keunho J.; Mahler, Guillaume; Marrone, Daniel P.; Narayanan, Desika; Navarre, Alexander; Reuter, Cassie; Rigby, Jane R.; Sharon, Keren; Solimano, Manuel; Sulzenauer, Nikolaus; Vieira, Joaquin; Vizgan, David
Authors
Anthony H. Gonzalez
Sidney Lower
Kedar A. Phadke
Justin Spilker
Manuel Aravena
Matthew Bayliss
Jack E. Birkin
Simon Birrer
Scott Chapman
Håkon Dahle
Christopher C. Hayward
Yashar Hezaveh
Ryley Hill
Taylor A. Hutchison
Keunho J. Kim
Dr Guillaume Mahler guillaume.mahler@durham.ac.uk
Academic Visitor
Daniel P. Marrone
Desika Narayanan
Alexander Navarre
Cassie Reuter
Jane R. Rigby
Keren Sharon
Manuel Solimano
Nikolaus Sulzenauer
Joaquin Vieira
David Vizgan
Abstract
We present JWST and Atacama Large Millimeter/submillimeter Array (ALMA) imaging for the lensing system SPT0418−47, which includes a strongly lensed, dusty, star-forming galaxy at redshift z = 4.225 and an associated multiply imaged companion. The JWST NIRCam and MIRI imaging observations presented in this paper were acquired as part of the Early Release Science program Targeting Extremely Magnified Panchromatic Lensed Arcs and Their Extended Star formation (TEMPLATES). This data set provides robust mutiwavelength detections of stellar light in both the main (SPT0418A) and companion (SPT0418B) galaxies, while the ALMA detection of [C ii] emission confirms that SPT0418B lies at the same redshift as SPT0418A. We infer that the projected physical separation of the two galaxies is 4.42 ± 0.05 kpc. We derive total magnifications of μ = 29 ± 1 and μ = 4.1 ± 0.7 for SPT0418A and SPT0418B, respectively. We use both prospector and cigale to derive stellar masses. We find that SPT0418A has a stellar mass of M*=3.4−0.6+1.1×1010M⊙ from prospector or M * = 1.5 ± 0.3 × 1010 M ⊙ from cigale. The stellar mass ratio of SPT0418A and SPT0418B is roughly between 4 and 7 ( 4.2−1.6+1.9 for prospector and 7.5 ± 3.7 for cigale). We see evidence of extended structure associated with SPT0418A that is suggestive of a tidal feature. These features, along with the close projected proximity, imply that the system is interacting. Interestingly, the star formation rates and stellar masses of both galaxies are consistent with the main sequence of star-forming galaxies at this epoch, indicating that this ongoing interaction has not noticeably elevated the star formation levels.
Citation
Cathey, J., Gonzalez, A. H., Lower, S., Phadke, K. A., Spilker, J., Aravena, M., …Vizgan, D. (2024). TEMPLATES: Characterization of a Merger in the Dusty Lensing SPT0418–47 System. Astrophysical Journal, 967(1), Article 11. https://doi.org/10.3847/1538-4357/ad33c9
Journal Article Type | Article |
---|---|
Acceptance Date | Feb 16, 2024 |
Online Publication Date | May 13, 2024 |
Publication Date | May 1, 2024 |
Deposit Date | May 21, 2024 |
Publicly Available Date | May 21, 2024 |
Journal | Astrophysical Journal |
Print ISSN | 0004-637X |
Publisher | American Astronomical Society |
Peer Reviewed | Peer Reviewed |
Volume | 967 |
Issue | 1 |
Article Number | 11 |
DOI | https://doi.org/10.3847/1538-4357/ad33c9 |
Keywords | Galaxy mergers, Einstein rings, Strong gravitational lensing, High-redshift galaxies |
Public URL | https://durham-repository.worktribe.com/output/2453406 |
Files
Published Journal Article
(1.6 Mb)
PDF
Publisher Licence URL
http://creativecommons.org/licenses/by/4.0/
You might also like
The COSMOS-Web ring: In-depth characterization of an Einstein ring lensing system at z ∼ 2
(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