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The molecular gas content in a protocluster at z = 17: Star formation and AGN feedback

Published online by Cambridge University Press:  04 June 2020

Q. D’Amato Open the ORCID record for Q. D’Amato [Opens in a new window] ,
I. Prandoni ,
R. Gilli ,
M. Massardi ,
E. Liuzzo ,
M. Mignoli ,
C. Vignali ,
A. Peca  and
R. Nanni
Q. D’Amato
Affiliation:
INAF/IRA, Istituto di Radioastronomia, Via Piero Gobetti 101, 40129, Bologna, Italy email: quirino.damato2@unibo.it Dipartimento di Fisica e Astronomia dell’Università degli Studi di Bologna, via P. Gobetti 93/2, 40129 Bologna, Italy
I. Prandoni
Affiliation:
INAF/IRA, Istituto di Radioastronomia, Via Piero Gobetti 101, 40129, Bologna, Italy email: quirino.damato2@unibo.it
R. Gilli
Affiliation:
INAF/OAS, Osservatorio di Astrofisica e Scienza dello Spazio di Bologna, via P. Gobetti 93/3, 40129 Bologna, Italy
M. Massardi
Affiliation:
INAF/IRA, Istituto di Radioastronomia, Via Piero Gobetti 101, 40129, Bologna, Italy email: quirino.damato2@unibo.it
E. Liuzzo
Affiliation:
INAF/IRA, Istituto di Radioastronomia, Via Piero Gobetti 101, 40129, Bologna, Italy email: quirino.damato2@unibo.it
M. Mignoli
Affiliation:
INAF/OAS, Osservatorio di Astrofisica e Scienza dello Spazio di Bologna, via P. Gobetti 93/3, 40129 Bologna, Italy
C. Vignali
Affiliation:
Dipartimento di Fisica e Astronomia dell’Università degli Studi di Bologna, via P. Gobetti 93/2, 40129 Bologna, Italy
A. Peca
Affiliation:
INAF/OAS, Osservatorio di Astrofisica e Scienza dello Spazio di Bologna, via P. Gobetti 93/3, 40129 Bologna, Italy
R. Nanni
Affiliation:
Dipartimento di Fisica e Astronomia dell’Università degli Studi di Bologna, via P. Gobetti 93/2, 40129 Bologna, Italy INAF/OAS, Osservatorio di Astrofisica e Scienza dello Spazio di Bologna, via P. Gobetti 93/3, 40129 Bologna, Italy
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Abstract

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A large-scale structure has been recently discovered at z = 1.7, around a powerful FRII radio galaxy. Eight Star Forming Galaxies (SFGs) have been discovered within Δ z ≍ 0.0095 and at < 1 Mpc from the FRII, indicating that this is a signpost of a protocluster. Furthermore, a significant X-ray diffuse emission overlapping the Eastern lobe of the FRII has been detected. Protoclusters are the ideal targets to investigate the complex assembly processes leading to the formation of local galaxy clusters. We will exploit new ALMA CO(2-1) observations (PI: R. Gilli) of the entire region around the FRII galaxy to trace the molecular gas content, in order to discover new protocluster members. Coupling these measurements with the multi-wavelength data coverage available for this field, we aim at placing constrains on the physical conditions in which star formation occurs, and ultimately infer the role of the radio jets in triggering it.

Keywords

galaxies clustersquasarssupermassive black holesshock waveshigh-redshift
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. 168 - 170
Copyright
© International Astronomical Union 2020