Spitzer/IRS Observations of the Redshift 3.91 quasar APM 08279+5255

B. T. Soifer, V. Charmandaris, B. R. Brandl +14

The Infrared Spectrograph (IRS) onboard the Spitzer Space Telescope (SST) has been used to obtain low and moderate resolution spectra of the dust and gas-rich quasar APM08279+5255…