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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 language | English |
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Pages (from-to) | 4548-4564 |
Number of pages | 17 |
Journal | Monthly Notices of the Royal Astronomical Society |
Volume | 522 |
Issue number | 3 |
Early online date | 29 Apr 2023 |
DOIs | |
Publication status | Published - 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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HIZRAD: How The Monsters Were Made: The Formation Of The Most Massive Black Holes In The Universe
1/09/20 → 31/08/22
Project: Research