Birds of a Feather: Resolving Stellar Mass Assembly With Jwst/Nircam in a Pair of Kindred Z ∼ 2 Dusty Star-Forming Galaxies Lensed by the Plck G165.7+67.0 Cluster

Authors

Patrick S. Kamieneski, School of Earth and Space Exploration
Brenda L. Frye, The University of Arizona
Rogier A. Windhorst, School of Earth and Space Exploration
Kevin C. Harrington, European Southern Observatory Santiago
Min S. Yun, University of Massachusetts Amherst
Allison Noble, School of Earth and Space Exploration
Massimo Pascale, University of California, Berkeley
Nicholas Foo, School of Earth and Space Exploration
Seth H. Cohen, School of Earth and Space Exploration
Rolf A. Jansen, School of Earth and Space Exploration
Timothy Carleton, School of Earth and Space Exploration
Anton M. Koekemoer, Space Telescope Science Institute
Christopher N.A. Willmer, The University of Arizona
Jake S. Summers, School of Earth and Space Exploration
Nikhil Garuda, The University of Arizona
Reagen Leimbach, The University of Arizona
Benne W. Holwerda, University of Louisville
Justin D.R. Pierel, Space Telescope Science Institute
Eric F. Jiménez-Andrade, Instituto de Radioastronomía y Astrofísica
S. P. Willner, Harvard-Smithsonian Center for Astrophysics
Belén Alcalde Pampliega, European Southern Observatory Santiago
Amit Vishwas, Cornell Center for Astrophysics and Planetary Science
William C. Keel, The University of Alabama
Q. Daniel Wang, University of Massachusetts Amherst
Cheng Cheng, Chinese Academy of Sciences South America Center for Astronomy
Dan Coe, Space Telescope Science Institute
Christopher J. Conselice, The University of Manchester
Jordan C.J. D’Silva, The University of Western Australia
Simon P. Driver, The University of Western Australia
Norman A. Grogin, Space Telescope Science Institute
Tyler Hinrichs, School of Earth and Space Exploration
James D. Lowenthal, Smith CollegeFollow

Author ORCID Identifier

Patrick S. Kamieneski: 0000-0001-9394-6732

Brenda L. Frye: 0000-0003-1625-8009

Rogier A. Windhorst: 0000-0001-8156-6281

Kevin C. Harrington: 0000-0001-5429-5762

Min S. Yun: 0000-0001-7095-7543

Allison Noble: 0000-0003-1832-4137

Massimo Pascale: 0000-0002-2282-8795

Nicholas Foo: 0000-0002-7460-8460

Seth H. Cohen: 0000-0003-3329-1337

Rolf A. Jansen: 0000-0003-1268-5230

Timothy Carleton: 0000-0001-6650-2853

Anton M. Koekemoer: 0000-0002-6610-2048

Christopher N.A. Willmer: 0000-0001-9262-9997

Jake S. Summers: 0000-0002-7265-7920

Nikhil Garuda: 0000-0003-3418-2482

Reagen Leimbach: 0009-0001-7446-2350

Benne W. Holwerda: 0000-0002-4884-6756

Justin D.R. Pierel: 0000-0002-2361-7201

Eric F. Jiménez-Andrade: 0000-0002-2640-5917

Belén Alcalde Pampliega: 0000-0002-4140-0428

Amit Vishwas: 0000-0002-4444-8929

William C. Keel: 0000-0002-6131-9539

Q. Daniel Wang: 0000-0002-9279-4041

Cheng Cheng: 0000-0003-0202-0534

Dan Coe: 0000-0001-7410-7669

Christopher J. Conselice: 0000-0003-1949-7638

Simon P. Driver: 0000-0001-9491-7327

Norman A. Grogin: 0000-0001-9440-8872

Tyler Hinrichs: 0009-0008-0376-3771

James D. Lowenthal: 0000-0001-9969-3115

Document Type

Article

Publication Date

9-1-2024

Publication Title

Astrophysical Journal

Abstract

We present a new parametric lens model for the G165.7+67.0 galaxy cluster, which was discovered with Planck through its bright submillimeter flux, originating from a pair of extraordinary dusty star-forming galaxies (DSFGs) at z ≈ 2.2. Using JWST and interferometric mm/radio observations, we characterize the intrinsic physical properties of the DSFGs, which are separated by only ∼1″ (8 kpc) and a velocity difference ΔV ≲ 600 km s−1 in the source plane, and thus are likely undergoing a major merger. Boasting intrinsic star formation rates SFRIR = 320 ± 70 and 400 ± 80 M ⊙ yr−1, stellar masses of log [ M ⋆ / M ⊙ ] = 10.2 ± 0.1 and 10.3 ± 0.1, and dust attenuations of A V = 1.5 ± 0.3 and 1.2 ± 0.3, they are remarkably similar objects. We perform spatially resolved pixel-by-pixel spectral energy distribution (SED) fitting using rest-frame near-UV to near-IR imaging from JWST/NIRCam for both galaxies, resolving some stellar structures down to 100 pc scales. Based on their resolved specific star formation rates (SFRs) and UVJ colors, both DSFGs are experiencing significant galaxy-scale star formation events. If they are indeed interacting gravitationally, this strong starburst could be the hallmark of gas that has been disrupted by an initial close passage. In contrast, the host galaxy of SN H0pe has a much lower SFR than the DSFGs, and we present evidence for the onset of inside-out quenching and large column densities of dust even in regions of low specific SFR. Based on the intrinsic SFRs of the DSFGs inferred from UV through far-infrared SED modeling, this pair of objects alone is predicted to yield an observable 1.1 ± 0.2 core-collapse supernovae per year, making this cluster field ripe for continued monitoring.

Volume

973

Issue

1

DOI

10.3847/1538-4357/ad5d59

ISSN

0004637X

Creative Commons License

This work is licensed under a Creative Commons Attribution 4.0 International License.

Comments

Archived as published.

Recommended Citation

Kamieneski, Patrick S.; Frye, Brenda L.; Windhorst, Rogier A.; Harrington, Kevin C.; Yun, Min S.; Noble, Allison; Pascale, Massimo; Foo, Nicholas; Cohen, Seth H.; Jansen, Rolf A.; Carleton, Timothy; Koekemoer, Anton M.; Willmer, Christopher N.A.; Summers, Jake S.; Garuda, Nikhil; Leimbach, Reagen; Holwerda, Benne W.; Pierel, Justin D.R.; Jiménez-Andrade, Eric F.; Willner, S. P.; Alcalde Pampliega, Belén; Vishwas, Amit; Keel, William C.; Wang, Q. Daniel; Cheng, Cheng; Coe, Dan; Conselice, Christopher J.; D’Silva, Jordan C.J.; Driver, Simon P.; Grogin, Norman A.; Hinrichs, Tyler; and Lowenthal, James D., "Birds of a Feather: Resolving Stellar Mass Assembly With Jwst/Nircam in a Pair of Kindred Z ∼ 2 Dusty Star-Forming Galaxies Lensed by the Plck G165.7+67.0 Cluster" (2024). Astronomy: Faculty Publications, Smith College, Northampton, MA.
https://scholarworks.smith.edu/ast_facpubs/132