Yu-Yen Chang Infrared Selection of Obscured AGNs in the COSMOS Field 5 Dec 2017 EAAGN ㈖槉磣 with Emeric Le Floc’h (CEA), Stephanie Juneau (CEA), Elisabete da Cunha (ANU), Mara Salvato (MPE), Francesca Civano (CfA), Stefano Marchesi (UClemson), Olivier Ilbert (LAM), Yoshiki Toba (ASIAA), Chen-Fatt Lim (ASIAA/NTU), Ji-Jia Tang (ASIAA/NTU), Wei-Hao Wang (ASIAA), Nicholas Ferraro (ASIAA/UVa), Megan C. Urry (Yale), Richard E. Griffiths (UHawaii), Jeyhan S. Kartaltepe (URochester), and the COSMOS team
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Infrared Selection of Obscured AGNs in the COSMOS Fieldtakuji/eaagn2017/proc/YY_C… · (Richard+2006+Prieto+2010) 4. type-1 Seyfert (Polletta+2007) da Cunha+2008 MAGPHYS +high-z
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Yu-Yen Chang
Infrared Selection of Obscured AGNs in the COSMOS Field
5 Dec 2017 EAAGN㈖槉磣
with Emeric Le Floc’h (CEA), Stephanie Juneau (CEA), Elisabete da Cunha (ANU), Mara Salvato (MPE), Francesca Civano (CfA), Stefano Marchesi (UClemson), Olivier Ilbert (LAM), Yoshiki Toba (ASIAA), Chen-Fatt Lim (ASIAA/NTU), Ji-Jia Tang (ASIAA/NTU), Wei-Hao Wang (ASIAA), Nicholas Ferraro (ASIAA/UVa),
Megan C. Urry (Yale), Richard E. Griffiths (UHawaii), Jeyhan S. Kartaltepe (URochester), and the COSMOS team
Yu-Yen Chang IR Selection of Obscured AGNs in the COSMOS Field 2Alexander & Hickox 2012
Credit: NASA, ESA, the Hubble Heritage Team (STScI/AURA)-ESA/Hubble Collaboration and A. Evans (University of Virginia, Charlottesville/NRAO/Stony Brook University), K. Noll (STScI), and J. Westphal (Caltech)
AGN vs. star formation vs. morphology?
Yu-Yen Chang IR Selection of Obscured AGNs in the COSMOS Field 3
• Tend to show a high fraction of disturbed morphologies (Hickox+2014, Kocevski+2015, Lanzuisi+2015b)
Compton-thick (obscured) AGNs
Are AGNs triggered by major merger or internal mechanisms (secular process, disk instabilities, compaction…) ?
Yu-Yen Chang IR Selection of Obscured AGNs in the COSMOS Field 4