Far-infrared properties of type 1 quasars

  • D.J. Hanish
  • , H.I. Teplitz
  • , P.L. Capak
  • , V. Desai
  • , L. Armus
  • , C.S. Brinkworth
  • , T.Y. Brooke
  • , J.W. Colbert
  • , D.T. Fadda
  • , D.T. Frayer
  • , Minh Huynh
  • , M. Lacy
  • , E.J. Murphy
  • , A. Noriega-Crespo
  • , R. Paladini
  • , C. Scarlata
  • , S.S. Shenoy

    Research output: Contribution to journalArticlepeer-review

    Abstract

    We use the Spitzer Space Telescope Enhanced Imaging Products and the Spitzer Archival Far-InfraRed Extragalactic Survey to study the spectral energy distributions (SEDs) of spectroscopically confirmed type 1 quasars selected from the Sloan Digital Sky Survey (SDSS). By combining the Spitzer and SDSS data with the Two Micron All Sky Survey, we are able to construct a statistically robust rest-frame 0.1-100 μm type 1 quasar template. We find that the quasar population is well-described by a single power-law SED at wavelengths less than 20 μm, in good agreement with previous work. However, at longer wavelengths, we find a significant excess in infrared luminosity above an extrapolated power-law, along with significant object-to-object dispersion in the SED. The mean excess reaches a maximum of 0.8 dex at rest-frame wavelengths near 100 μm. © 2013. The American Astronomical Society. All rights reserved.
    Original languageEnglish
    Pages (from-to)9pp
    JournalThe Astrophysical Journal
    Volume768
    Issue number1
    DOIs
    Publication statusPublished - 2013

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