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Significant Suppression of Star Formation in Radio-Quiet AGN Host Galaxies with Kiloparsec-Scale Radio Structures
- Publication Year :
- 2020
- Publisher :
- arXiv, 2020.
-
Abstract
- We conducted 22~GHz 1" JVLA imaging of 100 radio-quiet X-ray selected AGN from the Swift-BAT survey. We find AGN-driven kiloparsec-scale radio structures inconsistent with pure star formation in 11 AGN. The host galaxies of these AGN lie significantly below the star-forming main sequence, indicating suppressed star formation. While these radio structures tend to be physically small compared to the host galaxy, the global star formation rate of the host is affected. We evaluate the energetics of the radio structures interpreted first as immature radio jets, and then as consequences of an AGN-driven radiative outflow, and compare them to two criteria for successful feedback: the ability to remove the CO-derived molecular gas mass from the galaxy gravitational potential and the kinetic energy transfer to molecular clouds leading to $v_\mathrm{cloud} > \sigma_*$. In most cases, the jet interpretation is insufficient to provide the energy necessary to cause the star formation suppression. Conversely, the wind interpretation provides ample energy in all but one case. We conclude that it is more likely that the observed suppression of star formation in the global host galaxy is due to ISM interactions of a radiative outflow, rather than a small-scale radio jet.<br />Comment: 15 pages, 3 figures, 2 tables. Accepted for publication in the Astrophysical Journal
- Subjects :
- Active galactic nucleus
010504 meteorology & atmospheric sciences
Astrophysics::High Energy Astrophysical Phenomena
Galaxy wind
FOS: Physical sciences
Galactic wind
Astrophysics
Astrophysics::Cosmology and Extragalactic Astrophysics
Radio jets (1347)
01 natural sciences
Galaxy winds (626)
0103 physical sciences
Radiative transfer
Radio jets
010303 astronomy & astrophysics
Stellar evolution
Astrophysics::Galaxy Astrophysics
0105 earth and related environmental sciences
Physics
Active galactic nuclei
Star formation
Molecular cloud
Astronomy and Astrophysics
Galactic winds (572)
Astrophysics - Astrophysics of Galaxies
Galaxy
Stars
Space and Planetary Science
Astrophysics of Galaxies (astro-ph.GA)
Active galactic nuclei (16)
Star formation (1569)
Main sequence
Subjects
Details
- Database :
- OpenAIRE
- Accession number :
- edsair.doi.dedup.....8ad99a852affce8d4a0af920ab6739c5
- Full Text :
- https://doi.org/10.48550/arxiv.2010.13806