5 papers · 1 filter
Spitzer Observations of Supernova Remnant IC 443
A. Noriega-Crespo, D. C. Hines, K. Gordon +4
We present Spitzer observations of IC 443 obtained with MIPS and IRS as part of our GTO program on the astrophysics of ejecta from evolved stars. We find that the overall morpholog…
High-resolution radio continuum survey of M33 II. Thermal and nonthermal emission
F. S. Tabatabaei, R. Beck, E. Krügel +4
We determine the variation in the nonthermal radio spectral index in the nearby spiral galaxy M33 at a linear resolution of 360 pc. We separate the thermal and nonthermal component…
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…
Reduction Algorithms for the Multiband Imaging Photometer for Spitzer: 6 Months of Flight Data
K. D. Gordon, G. H. Rieke, C. W. Engelbracht +27
The first six months of flight data from the Multiband Imaging Photometer for Spitzer (MIPS) were used to test MIPS reduction algorithms based on extensive preflight laboratory dat…
HST Ultraviolet and Ground-based Optical Spectropolarimetry of IRAS QSOs: Dusty Scattering in Luminous AGN
D. C. Hines, G. D. Schmidt, K. D. Gordon +4
We present UV and optical spectropolarimetry of two highly polarized IRAS-selected QSOs, IRAS 13349+2438 and the BALQSO IRAS 14026+4341. The polarization in both objects rises rapi…