GOODS-HERSCHEL: IMPACT OF ACTIVE GALACTIC NUCLEI AND STAR FORMATION ACTIVITY ON INFRARED SPECTRAL ENERGY DISTRIBUTIONS AT HIGH REDSHIFT

We explore the effects of active galactic nuclei (AGNs) and star formation activity on the infrared (0.3-1000 mu m) spectral energy distributions (SEDs) of luminous infrared galaxies from z = 0.5 to 4.0. A significant portion (~25%) of our sample is dominated by an AGN (>50% of the mid-IR luminos...

Full description

Saved in:
Bibliographic Details
Published in:The Astrophysical journal 2012-11, Vol.759 (2), p.1-23
Main Authors: KIRKPATRICK, Allison, POPE, Alexandra, MULLANEY, James, PANNELLA, Maurilio, SCOTT, Douglas, ALTIERI, Bruno, AUSSEL, Herve, BOURNAUD, Frédéric, BUAT, Veronique, COIA, Daniela, DANNERBAUER, Helmet, DASYRA, Kalliopi, ALEXANDER, David M, KARTALTEPE, Jeyhan, LEITON, Roger, LINI, Lihwai, MAGDIS, Georgios, MAGNELLI, Benjamin, MORRISON, Glenn, POPESSO, Paola, VALTCHANOV, Ivan, CHARMANDARIS, Vassilis, DADDI, Emmanuele, DICKINSON, Mark, ELBAZ, David, GABOR, Jarred, HO SEONG HWANG, IVISON, Rob
Format: Article
Language:English
Subjects:
ABSORPTION
ABSORPTION SPECTROSCOPY
Active galactic nuclei
ASTRONOMY
ASTROPHYSICS
ASTROPHYSICS, COSMOLOGY AND ASTRONOMY
COMPARATIVE EVALUATIONS
COSMIC DUST
COSMOLOGY
Dust
Earth, ocean, space
ENERGY SPECTRA
Exact sciences and technology
GALACTIC EVOLUTION
GALAXIES
GALAXY NUCLEI
Infrared
INFRARED SPECTRA
LUMINOSITY
PHOTOMETRY
RED SHIFT
Sciences of the Universe
SILICATES
Spectra
Spectral energy distribution
Star formation
STARS
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:We explore the effects of active galactic nuclei (AGNs) and star formation activity on the infrared (0.3-1000 mu m) spectral energy distributions (SEDs) of luminous infrared galaxies from z = 0.5 to 4.0. A significant portion (~25%) of our sample is dominated by an AGN (>50% of the mid-IR luminosity) in the mid-IR. Based on the mid-IR classification, we divide our full sample into four sub-samples: z ~ 1 star-forming (SF) sources, z ~ 2 SF sources, AGNs with clear 9.7 mu m silicate absorption, and AGNs with featureless mid-IR spectra. We compare our composite SEDs to local templates and find that local templates do not accurately reproduce the mid-IR features and dust temperatures of our high-redshift systems. High-redshift IR luminous galaxies contain significantly more cool dust than their local counterparts. We find that a full suite of photometry spanning the IR peak is necessary to accurately account for the dominant dust temperature components in high-redshift IR luminous galaxies.
ISSN:0004-637X
1538-4357
DOI:10.1088/0004-637x/759/2/139