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Heavily Obscured Quasar Host Galaxies at z~2 are Disks, Not Major Mergers

HST WFC3/IR imaging of 28 Dust Obscured Galaxies (DOGs)

We find that only a small fraction (4%, at most11-25%) of the quasar host galaxies are major mergers. 

Finally, we suggest that the co-incidence of mergers and AGNactivity is luminosity dependent, with only the most luminous quasars beingtriggered mostly by major mergers.