Welcome to the new version of CaltechAUTHORS. Login is currently restricted to library staff. If you notice any issues, please email coda@library.caltech.edu
Published November 1, 2012 | Published
Journal Article Open

Spectral Energy Distributions of Type 1 Active Galactic Nuclei in the COSMOS Survey. I. The XMM-COSMOS Sample


The "Cosmic Evolution Survey" (COSMOS) enables the study of the spectral energy distributions (SEDs) of active galactic nuclei (AGNs) because of the deep coverage and rich sampling of frequencies from X-ray to radio. Here we present an SED catalog of 413 X-ray (XMM-Newton)-selected type 1 (emission line FWHM > 2000 km s^(–1)) AGNs with Magellan, SDSS, or VLT spectrum. The SEDs are corrected for Galactic extinction, broad emission line contributions, constrained variability, and host galaxy contribution. We present the mean SED and the dispersion SEDs after the above corrections in the rest-frame 1.4 GHz to 40 keV, and show examples of the variety of SEDs encountered. In the near-infrared to optical (rest frame ~8 μm-4000 Å), the photometry is complete for the whole sample and the mean SED is derived from detections only. Reddening and host galaxy contamination could account for a large fraction of the observed SED variety. The SEDs are all available online.

Additional Information

© 2012 American Astronomical Society. Received 2011 December 14; accepted 2012 September 4; published 2012 October 10. M.E. and H.H. thank J. McDowell for useful discussion. This work was supported in part by NASA Chandra grant number GO7-8136A (H.H., F.C., M.E.), NASA contract NAS8-39073 (Chandra X-ray Center), and the Smithsonian Scholarly Studies (F.C.). K.J. acknowledges support from the Emmy Noether Programme of the German Science Foundation (DFG) through grant number JA 1114/3-1. In Italy this work is supported by ASI/INAF contracts I/009/10/0, I/024/05/0, and I/088/06. In Germany this project is supported by the Bundesministerium für Bildung und Forschung/Deutsches Zentrum für Luft und Raumfahrt and the Max Planck Society. M.S. and G.H. acknowledge support bei the Leibniz Prize of the Deutsche Forschungagemeinschaft, DFG (HA 1850/28-1). Y.L. acknowledges partial funding support by the Directional Research Project of the Chinese Academy of Sciences under project No. KJCX2-YW-T03 and by the National Natural Science Foundation of China under grant Nos. 10821061, 10733010, 10725313, and by 973 Program of China under grant 2009CB824800.

Attached Files

Published - 0004-637X_759_1_6.pdf


Files (1.5 MB)
Name Size Download all
1.5 MB Preview Download

Additional details

August 22, 2023
October 20, 2023