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Spitzer and HHT observations of starless cores: masses and environments
Amelia M. Stutz, George H. Rieke, John H. Bieging +6
We present Spitzer observations of a sample of 12 starless cores selected to have prominent 24 micron shadows. The Spitzer images show 8 and 24 micron shadows and in some cases 70…
The Origin of the Silicate Emission Features in the Seyfert 2 Galaxy, NGC 2110
R. E. Mason, N. A. Levenson, Y. Shi +5
The unified model of active galactic nuclei (AGN) predicts silicate emission features at 10 and 18 microns in type 1 AGN, and such features have now been observed in objects rangin…
Physical Conditions in the Ionized Gas of 30 Doradus
R. Indebetouw, G. E. de Messières, S. Madden +13
We present a mid-infrared spectroscopic data cube of the central part of 30 Doradus, observed with Spitzer's IRS and MIPS/SED mode. Aromatic dust emission features and emission lin…