JWST's PEARLS: TN J1338-1942 -- I. Extreme jet triggered star-formation in a z=4.11 luminous radio galaxy

Kenneth J. Duncan*, Rogier A. Windhorst, Anton M. Koekemoer, Huub J. A. Röttgering, Seth H. Cohen, Rolf A. Jansen, Jake Summers, Scott Tompkins, Taylor A. Hutchison, Christopher J. Conselice, Simon P. Driver, Haojing Yan, Nathan J. Adams, Cheng Cheng, Dan Coe, Jose M. Diego, Hervé Dole, Brenda Frye, Hansung B. Gim, Norman A. GroginBenne W. Holwerda, Jeremy Lim, Madeline A. Marshall, Mario Nonino, Nor Pirzkal, Aaron Robotham, Russell E. Ryan, Jr., Christopher N. A. Willmer

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

We present the first JWST observations of the z=4.11 luminous radio galaxy TN J1338-1942, obtained as part of the ``Prime Extragalactic Areas for Reionization and Lensing Science'' (``PEARLS'') project. Our NIRCam observations, designed to probe the key rest-frame optical continuum and emission line features at this redshift, enable resolved spectral energy distribution modelling that incorporates both a range of stellar population assumptions and radiative shock models. With an estimated stellar mass of log10(M/M⊙)∼10.9, TN J1338--1942 is confirmed to be one of the most massive galaxies known at this epoch. Our observations also reveal extremely high equivalent-width nebular emission coincident with the luminous AGN jets that is best fit by radiative shocks surrounded by extensive recent star-formation. We estimate the total star-formation rate (SFR) could be as high as ∼1600M⊙yr−1, with the SFR that we attribute to the jet induced burst conservatively ≳500M⊙yr−1. The mass-weighted age of the star-formation, tmass
Original languageEnglish
Pages (from-to)4548-4564
Number of pages17
JournalMonthly Notices of the Royal Astronomical Society
Volume522
Issue number3
Early online date29 Apr 2023
DOIs
Publication statusPublished - 1 Jul 2023

Keywords / Materials (for Non-textual outputs)

  • galaxies :high-redshift
  • galaxies: individual
  • (TN J1338-1942)
  • galaxies: jets
  • radio continum: galaxies

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