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Towards the first radio galaxies

Published online by Cambridge University Press:  04 June 2020

Israel Matute Open the ORCID record for Israel Matute [Opens in a new window] ,
Jose Afonso ,
Luca Bizzocchi ,
Cirino Pappalardo Open the ORCID record for Cirino Pappalardo [Opens in a new window] ,
Hugo Messias  and
Stergios Amarantidis
Israel Matute
Affiliation:
Institute of Astrophysics and Space Sciences, Lisbon, PT email: [email protected] Faculty of Sciences, Univ. of Lisbon, Lisbon, PT
Jose Afonso
Affiliation:
Institute of Astrophysics and Space Sciences, Lisbon, PT email: [email protected] Faculty of Sciences, Univ. of Lisbon, Lisbon, PT
Luca Bizzocchi
Affiliation:
Max Planck Institute for Extraterrestrial Physics (MPE), Garching, DE
Cirino Pappalardo
Affiliation:
Institute of Astrophysics and Space Sciences, Lisbon, PT email: [email protected] Faculty of Sciences, Univ. of Lisbon, Lisbon, PT
Hugo Messias
Affiliation:
Joint ALMA Observatory, Santiago de Chile, CHL
Stergios Amarantidis
Affiliation:
Institute of Astrophysics and Space Sciences, Lisbon, PT email: [email protected] Faculty of Sciences, Univ. of Lisbon, Lisbon, PT
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Abstract

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Powerful AGN have been detected up to very high redshifts (z ∼ 6–8), well within the Epoch of Reionization (EoR), but the lack of powerful radio-galaxies among such sources strongly disagrees with the expectations based on the known radio population up to z ∼ 5. Our group has been pursuing a detailed analysis of the faintest population of radio sources detected in the deepest fields searching for clues of these first radio galaxies. This paper describes our strategy and presents a highly confident candidate. The results, once follow-up of all candidates is completed, will have significant implications for the upcoming generation of all-sky deep radio surveys such as ASKAP-EMU, Westerbork-WODAN, and SKA itself.

Keywords

galaxies: activegalaxies: high-redshiftgalaxies: distances and redshiftsgalaxies: evolutionradio continuum: galaxiessubmillimeter
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 15 , Symposium S352: Uncovering Early Galaxy Evolution in the ALMA and JWST Era , June 2019 , pp. 353 - 355
Copyright
© International Astronomical Union 2020

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