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

https://doi.org/10.3847/1538-4357/ad5d59

ISSN

0004637X

Creative Commons License

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

Version

Version of Record

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