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  The quasar feedback survey: discovering hidden Radio-AGN and their connection to the host galaxy ionized gas

Jarvis, M. E., Harrison, C. M., Mainieri, V., Alexander, D. M., Arrigoni Battaia, F., Rivera, G. C., et al. (2021). The quasar feedback survey: discovering hidden Radio-AGN and their connection to the host galaxy ionized gas. Monthly Notices of the Royal Astronomical Society, 503(2), 1780-1797. doi:10.1093/mnras/stab549.

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Jarvis, M. E.1, Author              
Harrison, C. M., Author
Mainieri, V., Author
Alexander, D. M., Author
Arrigoni Battaia, F.2, Author              
Rivera, G. Calistro, Author
Circosta, C., Author
Costa, T.3, Author              
Breuck, C. De, Author
Edge, A. C., Author
Girdhar, A., Author
Kakkad, D., Author
Kharb, P., Author
Lansbury, G. B., Author
Molyneux, S. J., Author
Mukherjee, D., Author
Mullaney, J. R., Author
Farina, E. P.4, Author              
S., Silpa, Author
Thomson, A. P., Author
Ward, S. R., Author more..
Affiliations:
1Galaxy Formation, MPI for Astrophysics, Max Planck Society, ou_2205643              
2Galaxy Formation, Cosmology, MPI for Astrophysics, Max Planck Society, ou_159878              
3Physical Cosmology, MPI for Astrophysics, Max Planck Society, ou_2205644              
4Cosmology, MPI for Astrophysics, Max Planck Society, ou_159876              

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 Abstract: We present the first results from the Quasar Feedback Survey, a sample of 42 z < 0.2, [O iii] luminous AGNs ( L[O III] > 1042.1 ergs s−1) with moderate radio luminosities (i.e. L1.4GHz > 1023.4 W Hz−1; median L1.4GHz = 5.9 × 1023 W Hz−1). Using high spatial resolution (∼0.3–1 arcsec), 1.5–6 GHz radio images from the Very Large Array, we find that 67 per cent of the sample have spatially extended radio features on ∼1–60 kpc scales. The radio sizes and morphologies suggest that these may be lower radio luminosity versions of compact, radio-loud AGNs. By combining the radio-to-infrared excess parameter, spectral index, radio morphology, and brightness temperature, we find radio emission in at least 57 per cent of the sample that is associated with AGN-related processes (e.g. jets, quasar-driven winds, or coronal emission). This is despite only 9.5–21 per cent being classified as radio-loud using traditional criteria. The origin of the radio emission in the remainder of the sample is unclear. We find that both the established anticorrelation between radio size and the width of the [O iii] line, and the known trend for the most [O iii] luminous AGNs to be associated with spatially extended radio emission, also hold for our sample of moderate radio luminosity quasars. These observations add to the growing evidence of a connection between the radio emission and ionized gas in quasar host galaxies. This work lays the foundation for deeper investigations into the drivers and impact of feedback in this unique sample.

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 Dates: 2021-03-05
 Publication Status: Published online
 Pages: -
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 Rev. Type: Peer
 Identifiers: DOI: 10.1093/mnras/stab549
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Title: Monthly Notices of the Royal Astronomical Society
  Other : Mon. Not. R. Astron. Soc.
Source Genre: Journal
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Publ. Info: Oxford : Oxford University Press
Pages: - Volume / Issue: 503 (2) Sequence Number: - Start / End Page: 1780 - 1797 Identifier: ISSN: 1365-8711
CoNE: https://pure.mpg.de/cone/journals/resource/1000000000024150