Type 2 AGN Host Galaxies in the Chandra-COSMOS Legacy Survey: No Evidence of AGN-driven Quenching

Hyewon Suh; Francesca Civano; Günther Hasinger; Elisabeta Lusso; Giorgio Lanzuisi; Stefano Marchesi; Benny Trakhtenbrot; Viola Allevato; Nico Cappelluti; Peter L. Capak; Martin Elvis; Richard E. Griffiths; Clotilde Laigle; Paulina Lira; Laurie Riguccini; David J. Rosario; Mara Salvato; Kevin Schawinski; Cristian Vignali

doi:10.3847/1538-4357/aa725c

Type 2 AGN Host Galaxies in the Chandra-COSMOS Legacy Survey: No Evidence of AGN-driven Quenching

Hyewon Suh, Francesca Civano, Günther Hasinger, Elisabeta Lusso, Giorgio Lanzuisi, Stefano Marchesi, Benny Trakhtenbrot, Viola Allevato, Nico Cappelluti, Peter L. Capak, Martin Elvis, Richard E. Griffiths, Clotilde Laigle, Paulina Lira, Laurie Riguccini, David J. Rosario, Mara Salvato, Kevin Schawinski, Cristian Vignali

Physics

Research output: Contribution to journal › Article › peer-review

21 Scopus citations

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 1 M M stellar 2 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 Mstellar 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.

Original language	English (US)
Article number	102
Journal	Astrophysical Journal
Volume	841
Issue number	2
DOIs	https://doi.org/10.3847/1538-4357/aa725c
State	Published - Jun 1 2017

Keywords

black hole physics
galaxies: active
galaxies: nuclei
quasars: general

ASJC Scopus subject areas

Astronomy and Astrophysics
Space and Planetary Science

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Suh, H., Civano, F., Hasinger, G., Lusso, E., Lanzuisi, G., Marchesi, S., Trakhtenbrot, B., Allevato, V., Cappelluti, N., Capak, P. L., Elvis, M., Griffiths, R. E., Laigle, C., Lira, P., Riguccini, L., Rosario, D. J., Salvato, M., Schawinski, K., & Vignali, C. (2017). Type 2 AGN Host Galaxies in the Chandra-COSMOS Legacy Survey: No Evidence of AGN-driven Quenching. Astrophysical Journal, 841(2), [102]. https://doi.org/10.3847/1538-4357/aa725c

Type 2 AGN Host Galaxies in the Chandra-COSMOS Legacy Survey : No Evidence of AGN-driven Quenching. / 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.

In: Astrophysical Journal, Vol. 841, No. 2, 102, 01.06.2017.

Research output: Contribution to journal › Article › peer-review

Suh, H, Civano, F, Hasinger, G, Lusso, E, Lanzuisi, G, Marchesi, S, Trakhtenbrot, B, Allevato, V, Cappelluti, N, Capak, PL, Elvis, M, Griffiths, RE, Laigle, C, Lira, P, Riguccini, L, Rosario, DJ, Salvato, M, Schawinski, K & Vignali, C 2017, 'Type 2 AGN Host Galaxies in the Chandra-COSMOS Legacy Survey: No Evidence of AGN-driven Quenching', Astrophysical Journal, vol. 841, no. 2, 102. https://doi.org/10.3847/1538-4357/aa725c

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. / Type 2 AGN Host Galaxies in the Chandra-COSMOS Legacy Survey : No Evidence of AGN-driven Quenching. In: Astrophysical Journal. 2017 ; Vol. 841, No. 2.

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