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Environmental Effects in Clusters: Modified Far-Infrared--Radio Relations within Virgo Cluster Galaxies
E. J. Murphy, J. D. P. Kenney, G. Helou +2
(abridged) We present a study on the effects of the intracluster medium (ICM) on the interstellar medium (ISM) of 10 Virgo cluster spiral galaxies using {\it Spitzer} far-infrared…
The Mid-Infrared Spectrum of Star-Forming Galaxies: Global Properties of PAH Emission
J. D. T. Smith, B. T. Draine, D. A. Dale +15
We present a sample of low-resolution 5-38um Spitzer IRS spectra of the inner few square kiloparsecs of 59 nearby galaxies spanning a large range of star formation properties. A ro…
The Effect of Star Formation on the Far-Infrared--Radio Correlation within Galaxies
E. J. Murphy, G. Helou, R. Braun +13
Using data obtained for twelve galaxies as part of the {\it Spitzer} Infrared Nearby Galaxies Survey (SINGS) and the Westerbork Synthesis Radio Telescope (WSRT)-SINGS radio continu…
Mid-Infrared IRS Spectroscopy of NGC 7331: A First Look at the SINGS Legacy
J. D. T. Smith, D. A. Dale, L. Armus +22
The nearby spiral galaxy NGC 7331 was spectrally mapped from 5-38um using all modules of Spitzer's IRS spectrograph. A strong new dust emission feature, presumed due to PAHs, was d…
Spatially Resolved Ultraviolet, H-alpha, Infrared, and Radio Star Formation in M81
K. D. Gordon, P. G. Perez-Gonzalez, K. A. Misselt +26
We present Multiband Imaging Photometer for Spitzer (MIPS) observations of M81 at 24, 70, and 160 micron. The grand design nature of M81 is clearly seen, showing two well resolved…
SINGS: The SIRTF Nearby Galaxies Survey
R. C. Kennicutt, L. Armus, G. Bendo +20
The SIRTF Nearby Galaxy Survey is a comprehensive infrared imaging and spectroscopic survey of 75 nearby galaxies. Its primary goal is to characterize the infrared emission of gala…
Optically faint counterparts to the ISO-FIRBACK 170 micron population: the discovery of cold, luminous galaxies at high redshift
S. C. Chapman, I. Smail, R. J. Ivison +3
We present Keck spectroscopy and UKIRT near-IR imaging observations of two 170micron-selected sources from the ISO-FIRBACK survey which have faint counterparts in the optical, and…