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The Spitzer Infrared Nearby Galaxies Survey: A High-Resolution Spectroscopy Anthology
D. A. Dale, J. D. T. Smith, E. A. Schlawin +18
High resolution mid-infrared spectra are presented for 155 nuclear and extranuclear regions from the Spitzer Infrared Nearby Galaxies Survey (SINGS). The fluxes for nine atomic for…
Spitzer Spectral Mapping of Supernova Remnant Cassiopeia A
J. D. T. Smith, Lawrence Rudnick, Tracey Delaney +5
We present the global distribution of fine structure infrared line emission in the Cassiopeia A supernova remnant using data from the Spitzer Space Telescope's Infrared Spectrograp…
New Young Brown Dwarfs in the Orion Molecular Cloud 2/3 Region
Dawn E. Peterson, S. T. Megeath, K. L. Luhman +7
Forty new low mass members with spectral types ranging from M4-M9 have been confirmed in the Orion Molecular Cloud 2/3 region. Through deep, I, z', J, H, K photometry of a 20' x 20…
Spatially Resolved Spitzer-IRS Spectroscopy of the Central Region of M82
P. Beirão, B. R. Brandl, P. N. Appleton +6
We present high spatial resolution (~ 35 parsec) 5-38 um spectra of the central region of M82, taken with the Spitzer Infrared Spectrograph. From these spectra we determined the fl…
Spitzer IRS mapping of the central kpc of Centaurus A
Alice C. Quillen, Joss Bland-Hawthorn, Joel Green +6
We report on the results of infrared spectroscopic mapping observations carried out in the nuclear region of Centaurus A (NGC5128). The 500 pc bipolar dust shell discovered by Quil…
Freshly Formed Dust in the Cassiopeia A Supernova Remnant as Revealed by the Spitzer Space Telescope
J. Rho, T. Kozasa, W. T. Reach +6
We performed Spitzer Infrared Spectrograph mapping observations covering nearly the entire extent of the Cassiopeia A supernova remnant (SNR), producing mid-infrared (5.5-35 micron…
Spectral Mapping Reconstruction of Extended Sources
J. D. T. Smith, L. Armus, D. A. Dale +6
Three dimensional spectroscopy of extended sources is typically performed with dedicated integral field spectrographs. We describe a method of reconstructing full spectral cubes, w…
Star Formation in NGC 5194 (M51a). II. The Spatially-Resolved Star Formation Law
Robert C. Kennicutt, Daniela Calzetti, Fabian Walter +20
We have studied the relationship between the star formation rate (SFR) surface density and gas surface density in the spiral galaxy M51a (NGC 5194), using multi-wavelength data obt…
Gaps in the cloud cover? Comparing extinction measures in spiral disks
B. W. Holwerda, M. Meyer, M. Regan +11
Dust in galaxies can be mapped by either the FIR/sub-mm emission, the optical or infrared reddening of starlight, or the extinction of a known background source. We compare two dus…
Warm molecular hydrogen in the Spitzer SINGS galaxy sample
H. Roussel, G. Helou, D. J. Hollenbach +12
(simplified) Results on the properties of warm H2 in 57 normal galaxies are derived from H2 rotational transitions, obtained as part of SINGS. This study extends previous extragala…
Aromatic emission from the ionised mane of the Horsehead nebula
M. Compiegne, A. Abergel, L. Verstraete +5
We study the evolution of the Aromatic Infrared Bands (AIBs) emitters across the illuminated edge of the Horsehead nebula and especially their survival and properties in the HII re…
The Calibration of Mid-Infrared Star Formation Rate Indicators
D. Calzetti, R. C. Kennicutt, C. W. Engelbracht +25
With the goal of investigating the degree to which the mid-infrared emission traces the star formation rate (SFR), we analyze Spitzer 8 um and 24 um data of star-forming regions in…
Dust Masses, PAH Abundances, and Starlight Intensities in the SINGS Galaxy Sample
B. T. Draine, D. A. Dale, G. Bendo +17
Physical dust models are presented for 65 galaxies in the SINGS survey that are strongly detected in the four IRAC bands and three MIPS bands. For each galaxy we estimate (1) the t…
Analysis of the emission of very small dust particles from Spitzer spectro-imagery data using blind signal separation methods
O. Berne, C. Joblin, Y. Deville +6
This work was conducted as part of the SPECPDR program, dedicated to the study of very small particles and astrochemistry, in Photo-Dissociation Regions (PDRs). We present the anal…
Searching for hidden Wolf-Rayet stars in the Galactic Plane - 15 new Wolf-Rayet stars
L. J. Hadfield, S. D. Van Dyk, P. W. Morris +3
We report the discovery of fifteen previously unknown Wolf-Rayet (WR) stars found as part of an infrared broad-band study of candidate WR stars in the Galaxy. We have derived an em…
Characterizing Young Brown Dwarfs using Low Resolution Near-IR Spectra
K. N. Allers, D. T. Jaffe, K. L. Luhman +7
We present near-infrared (1.0-2.4 micron) spectra confirming the youth and cool effective temperatures of 6 brown dwarfs and low mass stars with circumstellar disks toward the Cham…
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…
Spitzer IRAC Images and Sample Spectra of Cassiopeia A's Explosion
J. A. Ennis, L. Rudnick, W. T. Reach +5
We present Spitzer IRAC images, along with representative 5.27 to 38.5 micron IRS spectra of the Cassiopeia A supernova remnant. We find that various IRAC channels are each most se…
An Ultraviolet-to-Radio Broadband Spectral Atlas of Nearby Galaxies
D. A. Dale, A. Gil de Paz, K. D. Gordon +28
The ultraviolet-to-radio continuum spectral energy distributions are presented for all 75 galaxies in the Spitzer Infrared Nearby Galaxies Survey (SINGS). A principal component ana…
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…
Far-infrared characterization of an ultra-luminous starburst associated with a massively-accreting black hole at z=1.15
E. Le Floc'h, C. N. A. Willmer, K. Noeske +25
As part of the "All Wavelength Extended Groth Strip International Survey" (AEGIS), we describe the panchromatic characterization of an X-ray luminous active galactic nucleus (AGN)…
Discovery of a Young Substellar Companion in Chamaeleon
K. L. Luhman, J. C. Wilson, W. Brandner +6
During an imaging survey of the Chamaeleon I star-forming region with the ACS aboard HST, we have discovered a candidate substellar companion to the young low-mass star CHXR 73 (~2…
Spatially Resolved Spitzer Spectroscopy of the Starburst Nucleus in NGC 5253
P. Beirao, B. R. Brandl, D. Devost +3
We present new Spitzer Space Telescope data on the nearby, low-metallicity starburst galaxy NGC 5253, from the Infrared Array Camera IRAC and the Infrared Spectrograph IRS. The mid…
The opaque nascent starburst in NGC 1377: Spitzer SINGS observations
H. Roussel, G. Helou, J. D. Smith +16
We analyze extensive data on NGC1377 from the Spitzer Infrared Nearby Galaxies Survey (SINGS). Within the category of nascent starbursts, that we previously selected by their infra…