FAR-INFRARED PROPERTIES OF TYPE 1 QUASARS

Journal Article · Wed May 01 00:00:00 EDT 2013 · Astrophysical Journal

DOI:https://doi.org/10.1088/0004-637X/768/1/13· OSTI ID:22126861

Hanish, D. J.; Teplitz, H. I.; Capak, P.; Desai, V.; Armus, L.; Brinkworth, C.; Brooke, T.; Colbert, J.; Fadda, D.; Noriega-Crespo, A.; Paladini, R. ^[1]; Frayer, D. ^[2]; Huynh, M. ^[3]; Lacy, M. ^[4]; Murphy, E. ^[5]; Scarlata, C. ^[6]

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1. Spitzer Science Center, California Institute of Technology, MC 220-6, 1200 E California Blvd., Pasadena, CA 91125 (United States)
2. National Radio Astronomy Observatory, P.O. Box 2, Green Bank, WV 24944 (United States)
3. International Centre for Radio Astronomy Research, M468, University of Western Australia, Crawley, WA 6009 (Australia)
4. National Radio Astronomy Observatory, 520 Edgemont Road, Charlottesville, VA 22903 (United States)
5. The Observatories of the Carnegie Institution for Science, Pasadena, CA 91101 (United States)
6. Minnesota Institute for Astrophysics, School of Physics and Astronomy, University of Minnesota, Minneapolis, MN 55455 (United States)

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 {mu}m type 1 quasar template. We find that the quasar population is well-described by a single power-law SED at wavelengths less than 20 {mu}m, 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 {mu}m.

• OSTI ID: 22126861
• Journal Information: Astrophysical Journal, Vol. 768, Issue 1; Other Information: Country of input: International Atomic Energy Agency (IAEA); ISSN 0004-637X
• Country of Publication: United States
• Language: English

Related Subjects

79 ASTROPHYSICS
COSMOLOGY AND ASTRONOMY
DISPERSIONS
ENERGY SPECTRA
GALAXIES
LUMINOSITY
QUASARS
SPACE
WAVELENGTHS