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AGN and Star Formation in HerMES-IRS sources

Published online by Cambridge University Press:  25 July 2014

Anna Feltre
Affiliation:
Dipartimento di Fisica e Astronomia, Università di Padova, vicolo Osservatorio, 3, 35122 Padova, Italy ESO, Karl-Schwarzschild-Str. 2, 85748 Garching bei München, Germany
Evanthia Hatziminaoglou
Affiliation:
ESO, Karl-Schwarzschild-Str. 2, 85748 Garching bei München, Germany
Antonio Hernán-Caballero
Affiliation:
Instituto de Fisica de Cantabria, CSIC-UC, Avenida de los Castros s/n, 39005, Santander, Spain
Jacopo Fritz
Affiliation:
Sterrenkundig Observatorium, Vakgroep Fysica en Sterrenkunde Universeit, Gent, Krijgslaan 281, S9 9000 Gent
Alberto Franceschini
Affiliation:
Dipartimento di Fisica e Astronomia, Università di Padova, vicolo Osservatorio, 3, 35122 Padova, Italy
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Abstract

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One of the remaining open issues in the context of the analysis of Active Galactic Nuclei (AGN) is the evidence that nuclear gravitational accretion is often accompanied by a concurrent starburst activity. We developed a spectral energy distribution (SED) fitting technique to derive simultaneously the physical properties of active galaxies and coexisting starbursts making the best use of Spitzer and Herschel IR observations. We apply the SED fitting procedure to a large sample of extragalactic sources representing the HerMES (Herschel/Multi-tiered Extragalactic Survey) population with IRS spectra with a plethora of multi-wavelength data in order to study the impact of a possible presence of an AGN on the host galaxy's properties. We analyze the star formation rate (SFR) in conncetion to the presence of an AGN and compared the properties of the hot (AGN) and cold (starburst) dust component. Our findings are consistent with no evidence for the presence of an AGN affecting the star formation processes of the host galaxies.

Type
Contributed Papers
Copyright
Copyright © International Astronomical Union 2014 

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