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Session: Extragalactic Astronomy and Astrophysics

Name: Ms. Mado Kourakou (National & Kapodistrian Univ. of Athens)
Coauthors: Audibert Anelise (Instituto de Astrofísica de Canarias)
Dasyra Kalliopi (National & Kapodistrian Univ. of Athens)
Papachristou Michalis (National & Kapodistrian Univ. of Athens)
Fernández-Ontiveros Juan Antonio (Centro de Estudios de Física del Cosmos de Aragón)
Ruffa Ilaria (Cardiff Hub for Astrophysics Research & Technology, Cardiff University)
Bisigello Laura ( Università di Padova)
Combes Françoise (Observatoire de Paris)
Salomé Philippe (Observatoire de Paris)
Gruppioni Carlotta (INAF - Osservatorio di Astrofisica e Scienza dello Spazio di Bologna)
Polkas Markos (Donostia International Physics Center)
Type: Oral
Title: Stellar mass function of ARC radiogalaxies
Abstract:

The stellar or gaseous mass function of galaxies is an important tool of galactic evolution and of cosmological simulations of galaxy formation. A gas mass function of radio galaxies from the local universe up to z=2.5, was recently presented by Audibert et al. (2022), showing an increase in the mass of molecular gas of the CO-detected radiogalaxies with redshift, highlighting that star formation is more common in high-z radio galaxies than previously thought. The catalog used in that work was the ALMA Radiosource Catalogue (ARC) - a survey of 120 radiogalaxies used as ALMA (Atacama Large Millimeter/submillimeter Array) calibrators or calibrators, which is representative of the NVSS 1.4GHz survey at flux threshold of 0.4Jy. To better understand the evolutionary stage of those galaxies, their relation to the main sequence of star formation needs to be found. The estimation of the stellar mass of these radiogalaxies in the last ~11 billion years is needed for this purpose. We use an own code of bayesian probabilistic Spectral Energy Distribution (SED) fitting to infer the stellar mass. First results will be presented in that direction.