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X-Ray Scattering by Nonspherical Grains. I. Oblate Spheroids
B. T. Draine, Khosrow Allaf-Akbari
We calculate the scattering of X-rays by interstellar dust, for a dust model that reproduces the observed wavelength-dependent extinction and polarization of starlight. On interste…
The Spectral Energy Distribution of Dust Emission in the Edge-on Spiral Galaxy NGC 4631 as seen with Spitzer and JCMT
George J. Bendo, Daniel A. Dale, Bruce T. Draine +10
We explore the nature of variations in dust emission within an individual galaxy using 3.6 - 160 micron Spitzer Space Telescope observations and 450 and 850 micron James Clerk Maxw…
Ultraviolet Through Far-Infrared Spatially Resolved Analysis of the Recent Star Formation in M81 (NGC3031)
Pablo G. Perez-Gonzalez, Robert C. Kennicutt, Karl D. Gordon +14
The recent star formation (SF) in the early-type spiral galaxy M81 is characterized using imaging observations from the far-ultraviolet (UV) to the far-infrared (IR). We compare th…
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…
Mid-Infrared Spectral Diagnostics of Nuclear and Extra-Nuclear Regions in Nearby Galaxies
D. A. Dale, J. D. T. Smith, L. Armus +19
Mid-infrared diagnostics are presented for a large portion of the Spitzer Infrared Nearby Galaxies Survey (SINGS) sample plus archival data from the Infrared Space Observatory and…
Extended Mid-Infrared Aromatic Feature Emission in M 82
C. W. Engelbracht, P. Kundurthy, K. D. Gordon +19
We present new images (groundbased optical and mid-infrared (MIR) from the Spitzer Space Telescope) and spectra (from Spitzer) of the archetypal starburst galaxy M 82. The Spitzer…