The Astrophysical Journal (Jan 2024)
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
- Patrick S. Kamieneski,
- Brenda L. Frye,
- Rogier A. Windhorst,
- Kevin C. Harrington,
- Min S. Yun,
- Allison Noble,
- Massimo Pascale,
- Nicholas Foo,
- Seth H. Cohen,
- Rolf A. Jansen,
- Timothy Carleton,
- Anton M. Koekemoer,
- Christopher N. A. Willmer,
- Jake S. Summers,
- Nikhil Garuda,
- Reagen Leimbach,
- Benne W. Holwerda,
- Justin D. R. Pierel,
- Eric F. Jiménez-Andrade,
- S. P. Willner,
- Belén Alcalde Pampliega,
- Amit Vishwas,
- William C. Keel,
- Q. Daniel Wang,
- Cheng Cheng,
- Dan Coe,
- Christopher J. Conselice,
- Jordan C. J. D’Silva,
- Simon P. Driver,
- Norman A. Grogin,
- Tyler Hinrichs,
- James D. Lowenthal,
- Madeline A. Marshall,
- Mario Nonino,
- Rafael Ortiz III,
- Alex Pigarelli,
- Nor Pirzkal,
- Maria del Carmen Polletta,
- Aaron S. G. Robotham,
- Russell E. Ryan Jr.,
- Haojing Yan
Affiliations
- Patrick S. Kamieneski
- ORCiD
- School of Earth and Space Exploration, Arizona State University , PO Box 876004, Tempe, AZ 85287-6004, USA ; [email protected]
- Brenda L. Frye
- ORCiD
- Department of Astronomy/Steward Observatory, University of Arizona , 933 N Cherry Ave., Tucson, AZ 85721-0009, USA
- Rogier A. Windhorst
- ORCiD
- School of Earth and Space Exploration, Arizona State University , PO Box 876004, Tempe, AZ 85287-6004, USA ; [email protected]
- Kevin C. Harrington
- ORCiD
- European Southern Observatory , Alonso de Córdova 3107, Vitacura, Casilla 19001, Santiago de Chile, Chile; Universidad Diego Portales Núcleo de Astronomía, Facultad de Ingeniería y Ciencias, Universidad Diego Portales , Av. Ejército 441, Santiago, Chile
- Min S. Yun
- ORCiD
- Department of Astronomy, University of Massachusetts , Amherst, MA 01003, USA
- Allison Noble
- ORCiD
- School of Earth and Space Exploration, Arizona State University , PO Box 876004, Tempe, AZ 85287-6004, USA ; [email protected]
- Massimo Pascale
- ORCiD
- Department of Astronomy, University of California , 501 Campbell Hall #3411, Berkeley, CA 94720, USA
- Nicholas Foo
- ORCiD
- School of Earth and Space Exploration, Arizona State University , PO Box 876004, Tempe, AZ 85287-6004, USA ; [email protected]
- Seth H. Cohen
- ORCiD
- School of Earth and Space Exploration, Arizona State University , PO Box 876004, Tempe, AZ 85287-6004, USA ; [email protected]
- Rolf A. Jansen
- ORCiD
- School of Earth and Space Exploration, Arizona State University , PO Box 876004, Tempe, AZ 85287-6004, USA ; [email protected]
- Timothy Carleton
- ORCiD
- School of Earth and Space Exploration, Arizona State University , PO Box 876004, Tempe, AZ 85287-6004, USA ; [email protected]
- Anton M. Koekemoer
- ORCiD
- Space Telescope Science Institute , 3700 San Martin Dr., Baltimore, MD 21218, USA
- Christopher N. A. Willmer
- ORCiD
- Department of Astronomy/Steward Observatory, University of Arizona , 933 N Cherry Ave., Tucson, AZ 85721-0009, USA
- Jake S. Summers
- ORCiD
- School of Earth and Space Exploration, Arizona State University , PO Box 876004, Tempe, AZ 85287-6004, USA ; [email protected]
- Nikhil Garuda
- ORCiD
- Department of Astronomy/Steward Observatory, University of Arizona , 933 N Cherry Ave., Tucson, AZ 85721-0009, USA
- Reagen Leimbach
- ORCiD
- Department of Astronomy/Steward Observatory, University of Arizona , 933 N Cherry Ave., Tucson, AZ 85721-0009, USA
- Benne W. Holwerda
- ORCiD
- Department of Physics and Astronomy, University of Louisville , Louisville, KY 40292, USA
- Justin D. R. Pierel
- ORCiD
- Space Telescope Science Institute , 3700 San Martin Dr., Baltimore, MD 21218, USA
- Eric F. Jiménez-Andrade
- ORCiD
- Instituto de Radioastronomía y Astrofísica, Universidad Nacional Autónoma de México , Antigua Carretera a Pátzcuaro # 8701, Ex-Hda. San José de la Huerta, Morelia, Michoacán, C.P. 58089, Mexico
- S. P. Willner
- ORCiD
- Center for Astrophysics ∣ Harvard & Smithsonian , 60 Garden St., Cambridge, MA 02138, USA
- Belén Alcalde Pampliega
- ORCiD
- European Southern Observatory , Alonso de Córdova 3107, Vitacura, Casilla 19001, Santiago de Chile, Chile
- Amit Vishwas
- ORCiD
- Cornell Center for Astrophysics and Planetary Science, Cornell University , Space Sciences Building, Ithaca, NY 14853, USA
- William C. Keel
- ORCiD
- Department of Physics and Astronomy, University of Alabama , Box 870324, Tuscaloosa, AL 35404, USA
- Q. Daniel Wang
- ORCiD
- Department of Astronomy, University of Massachusetts , Amherst, MA 01003, USA
- Cheng Cheng
- ORCiD
- Chinese Academy of Sciences South America Center for Astronomy , National Astronomical Observatories, CAS, Beijing, 100101, People's Republic of China
- Dan Coe
- ORCiD
- Space Telescope Science Institute , 3700 San Martin Dr., Baltimore, MD 21218, USA; Association of Universities for Research in Astronomy (AURA) for the European Space Agency (ESA) , STScI, Baltimore, MD 21218, USA; Center for Astrophysical Sciences, Department of Physics and Astronomy, The Johns Hopkins University , 3400 N Charles St. Baltimore, MD 21218, USA
- Christopher J. Conselice
- ORCiD
- Jodrell Bank Centre for Astrophysics, Alan Turing Building, University of Manchester , Oxford Rd., Manchester M13 9PL, UK
- Jordan C. J. D’Silva
- ORCiD
- International Centre for Radio Astronomy Research (ICRAR) and the International Space Centre (ISC), The University of Western Australia , M468, 35 Stirling Hwy., Crawley, WA 6009, Australia; ARC Centre of Excellence for All Sky Astrophysics in 3 Dimensions (ASTRO 3D) , Australia
- Simon P. Driver
- ORCiD
- International Centre for Radio Astronomy Research (ICRAR) and the International Space Centre (ISC), The University of Western Australia , M468, 35 Stirling Hwy., Crawley, WA 6009, Australia
- Norman A. Grogin
- ORCiD
- Space Telescope Science Institute , 3700 San Martin Dr., Baltimore, MD 21218, USA
- Tyler Hinrichs
- ORCiD
- School of Earth and Space Exploration, Arizona State University , PO Box 876004, Tempe, AZ 85287-6004, USA ; [email protected]
- James D. Lowenthal
- ORCiD
- Smith College , Northampton, MA 01063, USA
- Madeline A. Marshall
- ORCiD
- ARC Centre of Excellence for All Sky Astrophysics in 3 Dimensions (ASTRO 3D) , Australia; National Research Council of Canada, Herzberg Astronomy & Astrophysics Research Centre , 5071 West Saanich Rd., Victoria, BC V9E 2E7, Canada
- Mario Nonino
- ORCiD
- INAF-Osservatorio Astronomico di Trieste , Via Bazzoni 2, I-34124 Trieste, Italy
- Rafael Ortiz III
- ORCiD
- School of Earth and Space Exploration, Arizona State University , PO Box 876004, Tempe, AZ 85287-6004, USA ; [email protected]
- Alex Pigarelli
- ORCiD
- School of Earth and Space Exploration, Arizona State University , PO Box 876004, Tempe, AZ 85287-6004, USA ; [email protected]
- Nor Pirzkal
- ORCiD
- Space Telescope Science Institute , 3700 San Martin Dr., Baltimore, MD 21218, USA
- Maria del Carmen Polletta
- ORCiD
- INAF-Istituto di Astrofisica Spaziale e Fisica cosmica (IASF) Milano , Via A. Corti 12, 20133 Milan, Italy
- Aaron S. G. Robotham
- ORCiD
- International Centre for Radio Astronomy Research (ICRAR) and the International Space Centre (ISC), The University of Western Australia , M468, 35 Stirling Hwy., Crawley, WA 6009, Australia
- Russell E. Ryan Jr.
- ORCiD
- Space Telescope Science Institute , 3700 San Martin Dr., Baltimore, MD 21218, USA
- Haojing Yan
- ORCiD
- Department of Physics and Astronomy, University of Missouri , Columbia, MO 65211, USA
- DOI
- https://doi.org/10.3847/1538-4357/ad5d59
- Journal volume & issue
-
Vol. 973,
no. 1
p. 25
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 Δ V ≲ 600 km s ^−1 in the source plane, and thus are likely undergoing a major merger. Boasting intrinsic star formation rates SFR _IR = 320 ± 70 and 400 ± 80 M _⊙ yr ^−1 , stellar masses of $\mathrm{log}[{M}_{\star }/{M}_{\odot }]=10.2\pm 0.1$ 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.
Keywords
