The Astrophysical Journal (Jan 2023)
JWST's TEMPLATES for Star Formation: The First Resolved Gas-phase Metallicity Maps of Dust-obscured Star-forming Galaxies at z ∼ 4
- Jack E. Birkin,
- Taylor A. Hutchison,
- Brian Welch,
- Justin S. Spilker,
- Manuel Aravena,
- Matthew B. Bayliss,
- Jared Cathey,
- Scott C. Chapman,
- Anthony H. Gonzalez,
- Gayathri Gururajan,
- Christopher C. Hayward,
- Gourav Khullar,
- Keunho J. Kim,
- Guillaume Mahler,
- Matthew A. Malkan,
- Desika Narayanan,
- Grace M. Olivier,
- Kedar A. Phadke,
- Cassie Reuter,
- Jane R. Rigby,
- J. D. T. Smith,
- Manuel Solimano,
- Nikolaus Sulzenauer,
- Joaquin D. Vieira,
- David Vizgan,
- Axel Weiss
Affiliations
- Jack E. Birkin
- ORCiD
- Department of Physics and Astronomy and George P. and Cynthia Woods Mitchell Institute for Fundamental Physics and Astronomy, Texas A&M University , 4242 TAMU, College Station, TX 77843-4242, USA ;
- Taylor A. Hutchison
- ORCiD
- Observational Cosmology Lab, Code 665, NASA Goddard Space Flight Center , 8800 Greenbelt Road, Greenbelt, MD 20771, USA
- Brian Welch
- ORCiD
- Observational Cosmology Lab, Code 665, NASA Goddard Space Flight Center , 8800 Greenbelt Road, Greenbelt, MD 20771, USA; Department of Astronomy, University of Maryland , College Park, MD 20742, USA; Center for Research and Exploration in Space Science and Technology , NASA/GSFC, Greenbelt, MD 20771, USA
- Justin S. Spilker
- ORCiD
- Department of Physics and Astronomy and George P. and Cynthia Woods Mitchell Institute for Fundamental Physics and Astronomy, Texas A&M University , 4242 TAMU, College Station, TX 77843-4242, USA ;
- Manuel Aravena
- ORCiD
- Instituto de Estudios Astrofísicos, Facultad de Ingeniería y Ciencias, Universidad Diego Portales , Av Ejército 441, Santiago, Chile
- Matthew B. Bayliss
- ORCiD
- Department of Physics, University of Cincinnati , Cincinnati, OH 45221, USA
- Jared Cathey
- ORCiD
- Department of Astronomy, University of Florida , 211 Bryant Space Sciences Center, Gainesville, FL 32611 USA
- Scott C. Chapman
- Department of Physics and Astronomy, University of British Columbia , 6225 Agricultural Road, Vancouver V6T 1Z1, Canada; National Research Council , Herzberg Astronomy and Astrophysics, 5071 West Saanich Road, Victoria V9E 2E7, Canada; Department of Physics and Atmospheric Science, Dalhousie Univ ersity, 6310 Coburg Road, B3H 4R2 Halifax, Canada
- Anthony H. Gonzalez
- ORCiD
- Department of Astronomy, University of Florida , 211 Bryant Space Sciences Center, Gainesville, FL 32611 USA
- Gayathri Gururajan
- ORCiD
- Department of Physics and Astronomy “Augusto Righi” (DIFA), University of Bologna , Via Gobetti 93/2, I-40129 Bologna, Italy; INAF—Osservatorio di Astrofisica e Scienza dello Spazio , Via Gobetti 93/3, I-40129 Bologna, Italy
- Christopher C. Hayward
- ORCiD
- Center for Computational Astrophysics , 162 Fifth Avenue, New York, NY 10010, USA
- Gourav Khullar
- ORCiD
- Department of Physics and Astronomy and PITT PACC, University of Pittsburgh , Pittsburgh, PA 15260, USA
- Keunho J. Kim
- ORCiD
- Department of Physics, University of Cincinnati , Cincinnati, OH 45221, USA
- Guillaume Mahler
- ORCiD
- Centre for Extragalactic Astronomy, Durham University , South Road, Durham DH1 3LE, UK; Institute for Computational Cosmology, Durham University , South Road, Durham DH1 3LE, UK
- Matthew A. Malkan
- ORCiD
- Department of Physics and Astronomy, University of California , Los Angeles, 430 Portola Plaza, Los Angeles, CA 90095, USA
- Desika Narayanan
- ORCiD
- Department of Astronomy, University of Florida , 211 Bryant Space Sciences Center, Gainesville, FL 32611 USA; Cosmic Dawn Center at the Niels Bohr Institute, University of Copenhagen and DTU-Space , Technical University of Denmark, Denmark
- Grace M. Olivier
- ORCiD
- Department of Physics and Astronomy and George P. and Cynthia Woods Mitchell Institute for Fundamental Physics and Astronomy, Texas A&M University , 4242 TAMU, College Station, TX 77843-4242, USA ;
- Kedar A. Phadke
- ORCiD
- Department of Astronomy, University of Illinois , 1002 West Green Street, Urbana, IL 61801, USA; Center for AstroPhysical Surveys, National Center for Supercomputing Applications , 1205 West Clark Street, Urbana, IL 61801, USA
- Cassie Reuter
- ORCiD
- Department of Astronomy, University of Illinois , 1002 West Green Street, Urbana, IL 61801, USA
- Jane R. Rigby
- ORCiD
- Observational Cosmology Lab, Code 665, NASA Goddard Space Flight Center , 8800 Greenbelt Road, Greenbelt, MD 20771, USA
- J. D. T. Smith
- ORCiD
- University of Toledo Department of Physics and Astronomy , Ritter Astrophysical Research Center, Toledo, OH 43606, USA
- Manuel Solimano
- ORCiD
- Instituto de Estudios Astrofísicos, Facultad de Ingeniería y Ciencias, Universidad Diego Portales , Avenida Ejército Libertador 441, Santiago 8370191, Chile
- Nikolaus Sulzenauer
- ORCiD
- Max-Planck-Institut für Radioastronomie , Auf dem Hügel 69, D-53121 Bonn, Germany
- Joaquin D. Vieira
- ORCiD
- Department of Astronomy, University of Illinois , 1002 West Green Street, Urbana, IL 61801, USA; Center for AstroPhysical Surveys, National Center for Supercomputing Applications , 1205 West Clark Street, Urbana, IL 61801, USA; Department of Physics, University of Illinois , 1110 West Green Street, Urbana, IL 61801, USA
- David Vizgan
- ORCiD
- Department of Astronomy, University of Illinois , 1002 West Green Street, Urbana, IL 61801, USA
- Axel Weiss
- ORCiD
- Max-Planck-Institut für Radioastronomie , Auf dem Hügel 69, D-53121 Bonn, Germany
- DOI
- https://doi.org/10.3847/1538-4357/acf712
- Journal volume & issue
-
Vol. 958,
no. 1
p. 64
Abstract
We present the first spatially resolved maps of gas-phase metallicity for two dust-obscured star-forming galaxies at z ∼ 4, from the JWST TEMPLATES Early Release Science program, derived from NIRSpec integral field unit spectroscopy of the H α and [N ii ] emission lines. Empirical optical line calibrations are used to determine that the sources are globally enriched to near-solar levels. While one source shows elevated [N ii ]/H α ratios and broad H α emission consistent with the presence of an active galactic nucleus in a ≳1 kpc region, we argue that both systems have already undergone significant metal enrichment as a result of their extremely high star formation rates. Utilizing Atacama Large Millimeter/submillimeter Array rest-frame 380 μ m continuum and [C i ]( ^3 P _2 – ^3 P _1 ) line maps we compare the spatial variation of the metallicity and gas-to-dust ratio in the two galaxies, finding the two properties to be anticorrelated on highly resolved spatial scales, consistent with various literature studies of z ∼ 0 galaxies. The data are indicative of the enormous potential of JWST to probe the enrichment of the interstellar medium on ∼kpc scales in extremely dust-obscured systems at z ∼ 4 and beyond.
Keywords
- Galaxy evolution
- High-redshift galaxies
- Galaxy formation
- Starburst galaxies
- Strong gravitational lensing
