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  3. 1 CONTRIBUTI IN RIVISTE (Journal articles)
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Please use this identifier to cite or link to this item: http://hdl.handle.net/20.500.12386/29096
Title: Type 2 AGN Host Galaxies in the Chandra-COSMOS Legacy Survey: No Evidence of AGN-driven Quenching
Authors: Suh, Hyewon
Civano, Francesca
Hasinger, Günther
LUSSO, ELISABETA
LANZUISI, Giorgio 
MARCHESI, STEFANO 
Trakhtenbrot, Benny
Allevato, Viola
CAPPELLUTI, Nico
Capak, Peter L.
Elvis, Martin
Griffiths, Richard E.
Laigle, Clotilde
Lira, Paulina
Riguccini, Laurie
Rosario, David J.
Salvato, Mara
Schawinski, Kevin
VIGNALI, CRISTIAN
Issue Date: 2017
Journal: THE ASTROPHYSICAL JOURNAL 
Number: 841
Issue: 2
First Page: 102
Abstract: We investigate the star formation properties of a large sample of ∼2300 X-ray-selected Type 2 Active Galactic Nuclei (AGNs) host galaxies out to z∼ 3 in the Chandra COSMOS Legacy Survey in order to understand the connection between the star formation and nuclear activity. Making use of the existing multi-wavelength photometric data available in the COSMOS field, we perform a multi-component modeling from far-infrared to near-ultraviolet using a nuclear dust torus model, a stellar population model and a starburst model of the spectral energy distributions (SEDs). Through detailed analyses of SEDs, we derive the stellar masses and the star formation rates (SFRs) of Type 2 AGN host galaxies. The stellar mass of our sample is in the range of 9< {log} {M}<SUB>{stellar</SUB>}/{M}<SUB>☉ </SUB>< 12 with uncertainties of ∼0.19 dex. We find that Type 2 AGN host galaxies have, on average, similar SFRs compared to the normal star-forming galaxies with similar M <SUB>stellar</SUB> and redshift ranges, suggesting no significant evidence for enhancement or quenching of star formation. This could be interpreted in a scenario, where the relative massive galaxies have already experienced substantial growth at higher redshift (z> 3), and grow slowly through secular fueling processes hosting moderate-luminosity AGNs.
URI: http://hdl.handle.net/20.500.12386/29096
URL: https://iopscience.iop.org/article/10.3847/1538-4357/aa725c
ISSN: 0004-637X
DOI: 10.3847/1538-4357/aa725c
Bibcode ADS: 2017ApJ...841..102S
Fulltext: open
Appears in Collections:1.01 Articoli in rivista

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