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20 April 2024 |
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Spectral energy distributions of quasars selected in the mid-infrared | | Mark Lacy
; Anna Sajina
; Susan E. Ridgway
; Danielle M. Nielsen
; Tanya Urrutia
; Duncan Farrah
; Elinor L. Gates
; | | Date: |
20 Mar 2012 | | Abstract: | We present preliminary results on fitting of SEDs to 142 z>1 quasars selected
in the mid-infrared. Our quasar selection finds objects ranging in extinction
from highly obscured, type-2 quasars, through more lightly reddened type-1
quasars and normal type-1s. We find a weak tendency for the objects with the
highest far-infrared emission to be obscured quasars, but no bulk systematic
offset between the far-infrared properties of dusty and normal quasars as might
be expected in the most naive evolutionary schemes. The hosts of the type-2
quasars have stellar masses comparable to those of radio galaxies at similar
redshifts. Many of the type-1s, and possibly one of the type-2s require a very
hot dust component in addition to the normal torus emission. | | Source: | arXiv, 1203.4521 | | Services: | Forum | Review | PDF | Favorites | |
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