The mid-infrared spectrum of star-forming galaxies: Global properties of polycyclic aromatic hydrocarbon emission

@article{Smith2007TheMS,
  title={The mid-infrared spectrum of star-forming galaxies: Global properties of polycyclic aromatic hydrocarbon emission},
  author={Jonathan T. Smith and Bruce T. Draine and Daniel A. Dale and John Moustakas and Robert C. Kennicutt and Jr. and George Helou and Lee Armus and H. Roussel and Kartik Sheth and George J Bendo and Brent Alan Buckalew and D. Calzetti C. W. Engelbracht and Karl D. Gordon and David J. Hollenbach and A. Li and Sangeeta Malhotra and Eric J. Murphy and Fabian Walter},
  journal={The Astrophysical Journal},
  year={2007},
  volume={656},
  pages={770-791}
}
We present a sample of low-resolution 5-38 μm Spitzer IRS spectra of the inner few square kiloparsecs of 59 nearby galaxies spanning a large range of star formation properties. A robust method for decomposing mid-infrared galaxy spectra is described and used to explore the behavior of PAH emission and the prevalence of silicate dust extinction. Evidence for silicate extinction is found in ~1/8 of the sample, at strengths that indicate that most normal galaxies undergo A_V ≲ 3 mag averaged over… 
Polycyclic Aromatic Hydrocarbons in Galaxies at z 0.1 : The Effect of Star Formation and AGN
We present the analysis of the Polycyclic Aromatic Hydrocarbon (PAH) spectra of a sample of 92 typical star forming galaxies at 0.03 <z <0.2 observed with the Spitzer IRS. We compare the relative
Mid-infrared Spectral Indicators of Star Formation and Active Galactic Nucleus Activity in Normal Galaxies
We investigate the use of mid-infrared (MIR) polycyclic aromatic hydrocarbon (PAH) bands, the continuum, and emission lines as probes of star formation (SF) and active galactic nucleus (AGN) activity
MID-INFRARED SPECTROSCOPY OF SUBMILLIMETER GALAXIES: EXTENDED STAR FORMATION IN MASSIVE HIGH-REDSHIFT GALAXIES
We used the Spitzer Infrared Spectrograph (IRS) to study the mid-IR properties and investigate the energetics of 24 Submillimeter Galaxies (SMGs). This is the largest sample of SMGs observed with
Polycyclic aromatic hydrocarbon emission in powerful high-redshift radio galaxies
We present the mid-infrared (IR) spectra of seven of the most powerful radio-galaxies known to exist at 1.5 < z < 2.6. The radio emission of these sources is dominated by the AGN with 500 MHz
SPATIALLY RESOLVED POLYCYCLIC AROMATIC HYDROCARBON EMISSION FEATURES IN NEARBY, LOW METALLICITY, STAR-FORMING GALAXIES
Low-resolution, mid-infrared Spitzer/IRS spectral maps are presented for three nearby, low-metallicity dwarf galaxies (NGC 55, NGC 3109, and IC 5152) for the purpose of examining the spatial
MID-INFRARED SPECTRA OF OPTICALLY-SELECTED TYPE 2 QUASARS
Type 2 quasars are luminous active galactic nuclei (AGNs) whose central engines are seen through large amounts of gas and dust. We present Spitzer spectra of 12 type 2 quasars selected on the basis
Characterizing quasars in the mid-infrared: high signal-to-noise ratio spectral templates
Mid-infrared (MIR) quasar spectra exhibit a suite of emission features including high ionization coronal lines from the narrow line region illuminated by the ionizing continuum, broad dust bumps from
Properties of dust and PAHs in various environments of nearby galaxies
In star-forming regions, dust and polycyclic aromatic hydr ocarbons (PAHs) absorb a significant fraction of stellar ultraviolet (UV) photons and re-radiat e them in the infrared (IR). Hence the IR
PROPERTIES OF POLYCYCLIC AROMATIC HYDROCARBONS IN LOCAL ELLIPTICAL GALAXIES REVEALED BY THE INFRARED SPECTROGRAPH ON SPITZER
We performed mid-infrared spectroscopic observations of 18 local dusty elliptical galaxies by using the Infrared Spectrograph (IRS) on board Spitzer. We have significantly detected polycyclic
The Effect of Active Galactic Nuclei on the Mid-infrared Aromatic Features
We present Spitzer measurements of the aromatic (also known as polycyclic aromatic hydrocarbon) features for 35 Seyfert galaxies from the revised Shapley-Ames sample and find that the relative
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The Mid-Infrared Spectra of Normal Galaxies.
TLDR
The spectra reported here typify the integrated emission from the interstellar medium of the majority of star-forming galaxies and could thus be used to obtain redshifts of highly extincted galaxies up to z=3 with SIRTF.
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