MIGHTEE: A first look at MIGHTEE quasars
Sarah V. White, Ivan Delvecchio, Nathan Adams, Ian Heywood, Imogen H. Whittam, Catherine L. Hale, Neo Namane, Rebecca A. A. Bowler, and Jordan D. Collier

TL;DR
This study analyzes a complete sample of 104 quasars from the MIGHTEE survey, examining their radio emission origins and how they relate to star formation and AGN activity across different redshifts.
Contribution
It provides the first detailed analysis of radio-loudness and emission sources in MIGHTEE quasars, highlighting the impact of SFR estimates and redshift on classification.
Findings
Radio-loudness fraction is about 5%.
The dominant source of radio emission varies with SFR estimates.
The starburst fraction increases with redshift.
Abstract
In this work we study a robust, -band complete, spectroscopically-confirmed sample of 104 unobscured (Type-1) quasars within the COSMOS and XMM-LSS fields of the MeerKAT International GHz Tiered Extragalactic Exploration (MIGHTEE) Survey, at 0.60 < < 3.41. The quasars are selected via colour-space and, with 1.3-GHz flux-densities reaching rms ~ 3.0Jy beam, we find a radio-loudness fraction of 5 per cent. Thanks to the deep, multiwavelength datasets that are available over these fields, the properties of radio-loud and radio-quiet quasars can be studied in a statistically-robust way, with the emphasis of this work being on the active-galactic-nuclei (AGN)-related and star-formation-related contributions to the total radio emission. We employ multiple star-formation-rate estimates for the analysis so that our results can be compared more-easily with others in…
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