What does this research mean for the field?

Low-excitation radio galaxies (LERGs) in quiescent and massive galaxies are fueled by hot gas across cosmic time, while LERGs in lower-mass star-forming galaxies are likely fueled by cold gas, and high-excitation radio galaxies (HERGs) are associated with ongoing star formation and higher accretion rates. Novelty: ClaimNovelty.INCREMENTAL. Consensus alignment: ConsensusAlignment.NEUTRAL.

What question did this study set out to answer?

This research aims to understand how radio-loud active galactic nuclei (AGN) relate to their host galaxies based on various factors such as stellar mass and star formation rate.

November 15, 2024Monthly Notices of the Royal Astronomical SocietyOpen Access

Radio-AGN activity across the galaxy population: dependence on stellar mass, star formation rate, and redshift

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Authors

RKR. KondapallyDurham University PBP. N. BestRoyal Observatory KDK. J. DuncanRoyal Observatory

Discussion

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Implication

Randomized trial characterizes radio-loud AGN activity in galaxies, indicating significant fueling mechanisms across cosmic time.

Key Points

This research aims to understand how radio-loud active galactic nuclei (AGN) relate to their host galaxies based on various factors such as stellar mass and star formation rate.
Used deep LOFAR radio observations combined with large galaxy samples to study radio-loud AGN incidences.
Classified AGN into low-excitation radio galaxies (LERGs) and high-excitation radio galaxies (HERGs).
Analyzed the dependence of LERG activity on stellar mass and SFR across cosmic time up to redshift z ~ 1.5.
LERG activity is prevalent over a wide range of star formation rates, while HERGs are typically found in star-forming galaxies.
In quiescent galaxies, LERG activity shows a steep dependence on stellar mass, consistent across the past ~10 Gyr.
LERG incidence is constant in massive galaxies, suggesting hot gas fuels them regardless of star formation activity.

Cite This Study

Kondapally et al. (2024) studied this question.

synapsesocial.com/papers/6a1fed860a77fb36002e4e9a https://doi.org/10.1093/mnras/stae2567

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Radio-AGN activity across the galaxy population: dependence on stellar mass, star formation rate, and redshift

Discussion

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Implication

Key Points

Cite This Study

Radio-AGN activity across the galaxy population: dependence on stellar mass, star formation rate, and redshift

Discussion

Member takes

Implication

Key Points

Cite This Study

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