Investigating the AGN-Merger Connection at z~2 with CANDELS - PowerPoint PPT Presentation

Investigating the AGN-Merger Connection at z~2 with CANDELS

Background

Evolution of AGN Fueling Modes -2 z = 0.1 z = 0.2 z = 0.5 -4 -6 log 10 [ φ (M B )] [Mpc -3 mag -1 ] -8 -2 z = 0.8 z = 1.0 z = 2.0 -4 -6 -8 -16 -20 -24 -28 -16 -20 -24 -28 -16 -20 -24 -28 M B Hopkins ¡& ¡Hernquist ¡(2006) ¡

Wide Field Camera 3 Rest-Frame UV Rest-Frame Optical V z Y J H z=1.55

X-ray AGN in GOODS-S ERS II CANDELS Deep CANDELS Wide Soft Source Hard Source

X-ray Luminosity Distribution

Host Morphologies Spheroids Disks Mergers / Interactions F160W (H) F775W (i) Rest-Frame UV Rest-Frame Optical V z Y J H z=1.55

Visual Classifications

Mass-Matched Control Sample

Classification Results

AGN Still Favor Spheroids All Disks All Spheroids Control AGN Pure Disks Disk + Spheroid Pure Spheroids (Disk with Bulge)

Standard Caveats Spheroids Disks Mergers / Interactions F160W (H) F775W (i)

Morphologies of Compton Thick AGN

Constraints on Time Delay Caveat Spheroids Disks Mergers / Interactions F160W (H) F775W (i)

Implications for AGN Fueling Models 10 -3 -2 log 10 [ φ (M B )] [Mpc -3 mag -1 ] z = 2.0 1.5 < z < 2.0 10 -4 d Φ /d(log L X ) -4 10 -5 -6 10 -6 10 -7 50% 50% -8 Disks Disks 10 -8 41 42 43 44 45 46 -16 -20 -24 -28 log(L X / erg s -1 ) M B

Alternatives to Mergers BLACK HOLE GROWTH AND AGN OBSCURATION BY INSTABILITY-DRIVEN INFLOWS IN HIGH-REDSHIFT DISK GALAXIES FED BY COLD STREAMS Fr´ ed´ eric Bournaud CEA, IRFU, SAp, 91191 Gif-sur-Yvette, France; frederic.bournaud@cea.fr Avishai Dekel Racah Institute of Physics, The Hebrew University, Jerusalem 91904, Israel; dekel@phys.huji.ac.il

Clumpy Disks Among AGN Hosts 4000A (rest) 4000A (rest) 4000A (rest) 4000A (rest) z = 0.5 - 0.8 F775W z = 0.5 - 0.8 F775W z = 0.5 - 0.8 F775W z = 0.5 - 0.8 F775W z = 0.8 - 1.2 F850LP z = 0.8 - 1.2 F850LP z = 0.8 - 1.2 F850LP z = 1.2 - 1.9 F125W z = 1.2 - 1.9 F125W z = 1.9 - 2.5 F160W

Clumpy Disks Among AGN Hosts

Clumpy Disks Among AGN Hosts

Clumpy Disks Among AGN Hosts

Clumpy Disks Among AGN Hosts

Alternatives to Mergers Spheroids Disks Mergers / Interactions F160W (H) F775W (i)

Conclusions Spheroids Disks Mergers / Interactions F160W (H) F775W (i)