A Two-parameter Model for the Infrared/Submillimeter/Radio Spectral Energy Distributions of Galaxies and Active Galactic Nuclei
Abstract
A two-parameter semi-empirical model is presented for the spectral energy distributions of galaxies with contributions to their infrared-submillimeter-radio emission from both star formation and accretion disk-powered activity. This model builds upon a previous one-parameter family of models for star-forming galaxies, and includes an update to the mid-infrared emission using an average template obtained from Spitzer Space Telescope observations of normal galaxies. Star-forming/active galactic nucleus (AGN) diagnostics based on polycyclic aromatic hydrocarbon equivalent widths and broadband infrared colors are presented, and example mid-infrared AGN fractional contributions are estimated from model fits to the Great Observatories All-Sky LIRG Survey sample of nearby U/LIRGS and the Five mJy Unbiased Spitzer Extragalactic Survey sample of 24 μm selected sources at redshifts 0 ≾ z ≾ 4.
Additional Information
© 2014 American Astronomical Society. Received 2013 November 25; accepted 2014 February 6; published 2014 March 6. We appreciate helpful discussions with Adam Myers, Mike Brotherton, Zhaohui Shang, Allison Kirkpatrick, Emeric Le Floc'h, and James Mullaney. Support for this work, part of the Spitzer Space Telescope Legacy Science Program 40539, was provided by NASA and issued by the Jet Propulsion Laboratory, California Institute of Technology under NASA contract 1407. Herschel is an ESA space observatory with science instruments provided by European-led Principal Investigator consortia and with important participation from NASA. This research has made use of the NASA/IPAC Infrared Science Archive, which is operated by the Jet Propulsion Laboratory, California Institute of Technology, under contract with NASA. We gratefully acknowledge NASA's support for the construction, operation, and science analysis for the Galaxy Evolution Explorer (GALEX) mission, developed in cooperation with the Centre National d'Etudes Spatiales of France and the Korean Ministry of Science and Technology. Funding for the Sloan Digital Sky Survey (SDSS) and SDSS-II has been provided by the Alfred P. Sloan Foundation, the Participating Institutions, the NSF, the U.S. Department of Energy, NASA, the Japanese Monbukagakusho, the Max Planck Society, and the Higher Education Funding Council for England. This publication makes use of data products from the Two Micron All Sky Survey, which is a joint project of the University of Massachusetts and the Infrared Processing and Analysis Center/California Institute of Technology, funded by the National Aeronautics and Space Administration and the National Science Foundation.Attached Files
Published - 0004-637X_784_1_83.pdf
Accepted Version - 1402.1495.pdf
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Additional details
- Alternative title
- A Two-Parameter Model for the Infrared/Submillimeter/Radio Spectral Energy Distributions of Galaxies and AGN
- Eprint ID
- 46120
- Resolver ID
- CaltechAUTHORS:20140606-102341805
- 40539
- NASA
- 1407
- NASA/JPL/Caltech
- Alfred P. Sloan Foundation
- Participating Institutions
- NSF
- Department of Energy (DOE)
- Japanese Monbukagakusho
- Max Planck Society
- Higher Education Funding Council for England
- Created
-
2014-06-06Created from EPrint's datestamp field
- Updated
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2021-11-10Created from EPrint's last_modified field
- Caltech groups
- Infrared Processing and Analysis Center (IPAC)