| |
 |
| Paper: |
HST Morphologies of z ~ 2 Dust Obscured Galaxies |
| Volume: |
408, The Starburst−AGN Connection |
| Page: |
461 |
| Authors: |
Bussmann, R.S.; Dey, A. |
| Abstract: |
We present high spatial resolution Cycle 15 HST imaging of 31 z ~ 2 Dust Obscured Galaxies (DOGs) in the Boötes Field of the NOAO Deep Wide-Field Survey. Although this subset of DOGs have mid-IR spectral features typical of AGN, all but one of the galaxies are spatially extended and not dominated by an unresolved component at rest-frame optical wavelengths. Sérsic profile fitting indicates effective radii of 1-5 kpc, roughly intermediate between SMGs and quiescent BzKs and DRGs. DOG morphologies suggest they are more dynamically relaxed than local ULIRGs. HST imaging of a different sample of DOGs in Boötes observed during Cycle 16 shows qualitative evidence for a higher rate of interaction compared to the Cycle 15 sample. If major mergers are the progenitors of DOGs, then our observations suggest that DOGs may represent various stages of a post-merger evolutionary phase. |
|
|
|
|
|
