THE NEXT GENERATION ATLAS OF QUASAR SPECTRAL ENERGY DISTRIBUTIONS FROM RADIO TO X-RAYS

Journal Article · Thu Sep 01 00:00:00 EDT 2011 · Astrophysical Journal, Supplement Series

DOI:https://doi.org/10.1088/0067-0049/196/1/2· OSTI ID:21560338

Zhaohui, Shang; Jun, Li; Yanxia, Xie ^[1]; Brotherton, Michael S; Cales, Sabrina L; Dale, Daniel A; Runnoe, Jessie C; Kelly, Benjamin J ^[2]; Wills, Beverley J; Wills, D ^[3]; Green, Richard F ^[4]; Nemmen, Rodrigo S ^[5]; Gallagher, Sarah C ^[6]; Ganguly, Rajib ^[7]; Hines, Dean C ^[8]; Kriss, Gerard A ^[9]; Tang, Baitian ^[10]

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1. Department of Physics, Tianjin Normal University, Tianjin 300387 (China)
2. Department of Physics and Astronomy, University of Wyoming, Laramie, WY 82071 (United States)
3. Department of Astronomy, University of Texas at Austin, 1 University Station, C1400 Austin, TX 78712 (United States)
4. Large Binocular Telescope Observatory, University of Arizona, 933 North Cherry Avenue, Tucson, AZ 85721 (United States)
5. NASA/Goddard Space Flight Center, Greenbelt, MD 20771 (United States)
6. Department of Physics and Astronomy, University of Western Ontario, London, ON N6A 3K7 (Canada)
7. Department of Computer Science, Engineering, and Physics, University of Michigan-Flint, 213 Murchie Science Building, 303 Kearsley Street, Flint, MI 48502 (United States)
8. Space Science Institute, 4750 Walnut Street, Suite 205, Boulder, CO 80301 (United States)
9. Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218 (United States)
10. Department of Physics, 1245 Webster Hall, Washington State University, Pullman, WA 99164-2814 (United States)

We have produced the next generation of quasar spectral energy distributions (SEDs), essentially updating the work of Elvis et al. by using high-quality data obtained with several space- and ground-based telescopes, including NASA's Great Observatories. We present an atlas of SEDs of 85 optically bright, non-blazar quasars over the electromagnetic spectrum from radio to X-rays. The heterogeneous sample includes 27 radio-quiet and 58 radio-loud quasars. Most objects have quasi-simultaneous ultraviolet-optical spectroscopic data, supplemented with some far-ultraviolet spectra, and more than half also have Spitzer mid-infrared Infrared Spectrograph spectra. The X-ray spectral parameters are collected from the literature where available. The radio, far-infrared, and near-infrared photometric data are also obtained from either the literature or new observations. We construct composite SEDs for radio-loud and radio-quiet objects and compare these to those of Elvis et al., finding that ours have similar overall shapes, but our improved spectral resolution reveals more detailed features, especially in the mid- and near-infrared.

• OSTI ID: 21560338
• Journal Information: Astrophysical Journal, Supplement Series, Vol. 196, Issue 1; Other Information: DOI: 10.1088/0067-0049/196/1/2; ISSN 0067-0049
• Country of Publication: United States
• Language: English

Related Subjects

79 ASTROPHYSICS
COSMOLOGY AND ASTRONOMY
ENERGY SPECTRA
FAR INFRARED RADIATION
FAR ULTRAVIOLET RADIATION
NEAR INFRARED RADIATION
QUASARS
X RADIATION
X-RAY GALAXIES
COSMIC RADIO SOURCES
COSMIC RAY SOURCES
COSMIC X-RAY SOURCES
ELECTROMAGNETIC RADIATION
GALAXIES
INFRARED RADIATION
IONIZING RADIATIONS
RADIATIONS
SPECTRA
ULTRAVIOLET RADIATION