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 | |
| State | Published - Jun 1 2017 |
| Externally published | Yes |
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Keywords
- black hole physics
- galaxies: active
- galaxies: nuclei
- quasars: general
ASJC Scopus subject areas
- Astronomy and Astrophysics
- Space and Planetary Science
Cite this
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
}
TY - JOUR
T1 - Type 2 AGN Host Galaxies in the Chandra-COSMOS Legacy Survey
T2 - No Evidence of AGN-driven Quenching
AU - Suh, Hyewon
AU - Civano, Francesca
AU - Hasinger, Günther
AU - Lusso, Elisabeta
AU - Lanzuisi, Giorgio
AU - Marchesi, Stefano
AU - Trakhtenbrot, Benny
AU - Allevato, Viola
AU - Cappelluti, Nico
AU - Capak, Peter L.
AU - Elvis, Martin
AU - Griffiths, Richard E.
AU - Laigle, Clotilde
AU - Lira, Paulina
AU - Riguccini, Laurie
AU - Rosario, David J.
AU - Salvato, Mara
AU - Schawinski, Kevin
AU - Vignali, Cristian
PY - 2017/6/1
Y1 - 2017/6/1
N2 - 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.
AB - 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.
KW - black hole physics
KW - galaxies: active
KW - galaxies: nuclei
KW - quasars: general
UR - http://www.scopus.com/inward/record.url?scp=85020877622&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85020877622&partnerID=8YFLogxK
U2 - 10.3847/1538-4357/aa725c
DO - 10.3847/1538-4357/aa725c
M3 - Article
AN - SCOPUS:85020877622
VL - 841
JO - Astrophysical Journal
JF - Astrophysical Journal
SN - 0004-637X
IS - 2
M1 - 102
ER -