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The Outburst of V1647 Ori Revealed by Spitzer
J. Muzerolle, S. T. Megeath, K. M. Flaherty +4
We present Spitzer Space Telescope observations of V1647 Ori, the outbursting source lighting McNeil's nebula, taken near the optical peak of the outburst in early March 2004. The…
No cold dust within the supernova remnant Cassiopeia A
O. Krause, S. M. Birkmann, G. H. Rieke +4
A large amount (about three solar masses) of cold (18 K) dust in the prototypical type II supernova remnant Cassiopeia A was recently reported. It was concluded that dust productio…
Small PAHs in the Red Rectangle
Uma P. Vijh, Adolf N. Witt, Karl D. Gordon
Following our initial discovery of blue luminescence in the spectrum of the Red Rectangle (RR) and its identification as fluorescence by small three- to four-ringed polycyclic arom…
Dust Attenuation in Late-Type Galaxies. I. Effects on Bulge and Disk Components
D. Pierini, K. D. Gordon, A. N. Witt +1
We present results of new Monte Carlo calculations made with the DIRTY code of radiative transfer of stellar and scattered radiation for a dusty giant late-type galaxy like the Mil…
Ultraviolet Extinction Properties in the Milky Way
Lynne A. Valencic, Geoffrey C. Clayton, Karl D. Gordon
We have assembled a homogeneous database of 417 ultraviolet (UV) extinction curves for reddened sightlines having International Ultraviolet Explorer (IUE) spectra. We have combined…
New Infrared Emission Features and Spectral Variations in NGC 7023
M. W. Werner, K. I. Uchida, K. Sellgren +5
We have observed the reflection nebula NGC 7023, with the Short-High module and long-slit Short-Low and Long-Low modules of the Infrared Spectrograph on the Spitzer Space Telescope…
The Formation and Evolution of Planetary Systems: First Results from a Spitzer Legacy Science Program
M. R. Meyer, L. A. Hillenbrand, D. E. Backman +34
We present 3-160 micron photometry obtained with the IRAC and MIPS instruments for the first five targets from the Spitzer Legacy Science Program "Formation and Evolution of Planet…
Far Infrared Imaging of NGC 55
C. W. Engelbracht, K. D. Gordon, G. J. Bendo +22
We present images of the galaxy NGC 55 at 24, 70, and 160 micron obtained with the Multiband Imaging Photometer for Spitzer (MIPS) instrument aboard the Spitzer Space Telescope. Th…
The nature of luminous X-ray sources with mid-infrared counterparts
A. Alonso-Herrero, P. G. Perez-Gonzalez, J. Rigby +28
We investigate the luminous X-ray sources in the Lockman Hole (LH) and the Extended Groth Strip (EGS) detected at 24microns using MIPS and also with IRAC on board Spitzer. We assem…
Identification of luminous infrared galaxies at 1<z<2.5
E. Le Floc'h, P. G. Perez-Gonzalez, G. H. Rieke +24
We present preliminary results on 24micron detections of luminous infrared galaxies at z>1 with the Multiband Imaging Photometer for Spitzer (MIPS). Observations were performed in…
The 24-Micron View of Embedded Star Formation in NGC 7129
J. Muzerolle, S. T. Megeath, R. A. Gutermuth +15
We present observations of the star formation region NGC 7129 taken with the Multiband Imaging Photometer for Spitzer (MIPS). A significant population of sources, likely pre-main s…
IRAC Imaging of Lockman Hole
J. -S. Huang, P. Barmby, G. G. Fazio +17
IRAC imaging of a 4'7x4'7 area in the Lockman Hole detected over 400 galaxies in the IRAC 3.6 micron and 4.5 micron bands, 120 in the 5.8 micron, and 80 in the 8 micron bandin 30 m…
New debris disk candidates: 24 micron stellar excesses at 100 Myr
Nadya Gorlova, Deborah L. Padgett, George H. Rieke +12
Sixty three members of the 100 Myr old open cluster M47 (NGC 2422) have been detected at 24 micron with Spitzer. The Be star V 378 Pup shows an excess both in the near-infrared and…
The 24 Micron Source Counts in Deep Spitzer Surveys
Casey Papovich, H. Dole, E. Egami +20
Galaxy source counts in the infrared provide strong constraints on the evolution of the bolometric energy output from distant galaxy populations. We present the results from deep 2…
Sub-millimeter detections of Spitzer Space Telescope galaxy populations
S. Serjeant, A. M. J. Mortier, R. J. Ivison +23
We present sub-millimeter statistical detections of galaxies discovered in the 5'x5' Spitzer Early Release Observations (to 4-15 microJy 5 sigma at 3.6-8 microns, 170 microJy at 24…
Extremely Red Objects in The Lockman Hole
G. Wilson, J. -S. Huang, P. G. Perez-Gonzalez +21
We investigate Extremely Red Objects (EROs) using near- and mid-infrared observations in five passbands (3.6 to 24 micron) obtained from the Spitzer Space Telescope, and deep groun…
Discovery of Blue Luminescence in the Red Rectangle: Possible Fluorescence from Neutral Polycyclic Aromatic Hydrocarbon Molecules?
Uma P. Vijh, Adolf N. Witt, Karl D. Gordon
Here we report our discovery of a band of blue luminescence (BL) in the Red Rectangle (RR) nebula. This enigmatic proto-planetary nebula is also one of the brightest known sources…
Interstellar Polarization in M31
Geoffrey C. Clayton, Michael J. Wolff, Karl D. Gordon +3
The wavelength dependence of interstellar polarization due to dust in M31 has been observed along four sightlines. Only one sightline had been measured previously.The globular clus…