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Galaxy Clusters in the IRAC Dark Field I: Growth of the red sequence
J. E. Krick, J. A. Surace, D. Thompson +4
Using three newly identified galaxy clusters at z~1 (photometric redshift) we measure the evolution of the galaxies within clusters from high redshift to the present day by studyin…
The Observatory for Multi-Epoch Gravitational Lens Astrophysics (OMEGA)
Leonidas A Moustakas, Adam J Bolton, Jeffrey T Booth +15
(abridged) The Observatory for Multi-Epoch Gravitational Lens Astrophysics (OMEGA) is a mission concept for a 1.5-m near-UV through near-IR space observatory that will be dedicated…
The Mid-Infrared Properties of X-ray Sources
V. Gorjian, M. Brodwin, C. S. Kochanek +16
We combine the results of the Spitzer IRAC Shallow Survey and the Chandra XBootes Survey of the 8.5 square degrees Bootes field of the NOAO Deep Wide- Field Survey to produce the l…
Spitzer SAGE survey of the Large Magellanic Cloud II: Evolved Stars and Infrared Color Magnitude Diagrams
R. D. Blum, J. R. Mould, K. A. Olsen +47
Color-magnitude diagrams (CMDs) are presented for the Spitzer SAGE (Surveying the Agents of a Galaxy's Evolution) survey of the Large Magellanic Cloud (LMC). IRAC and MIPS 24 um ep…
9.7 um Silicate Features in AGNs: New Insights into Unification Models
Y. Shi, G. H. Rieke, D. C. Hines +6
We describe observations of 9.7 um silicate features in 97 AGNs, exhibiting a wide range of AGN types and of X-ray extinction toward the central nuclei. We find that the strength o…
Spitzer Survey of the Large Magellanic Cloud, Surveying the Agents of a Galaxy's Evolution (SAGE) I: Overview and Initial Results
Margaret Meixner, Karl D. Gordon, Remy Indebetouw +46
We are performing a uniform and unbiased, ~7x7 degrees imaging survey of the Large Magellanic Cloud (LMC), using the IRAC and MIPS instruments on board the Spitzer Space Telescope…
The AGN Contribution to the Mid-IR Emission of Luminous Infrared Galaxies
K. Brand, A. Dey, D. Weedman +11
We determine the contribution of AGN to the mid-IR emission of luminous infrared galaxies (LIRGs) at z>0.6 by measuring the mid-IR dust continuum slope of 20,039 mid-IR sources. Th…
In-flight performance and calibration of the Infrared Array Camera (IRAC) for the Spitzer Space Telescope
J. L. Hora, the IRAC team
The Infrared Array Camera (IRAC) is one of three focal plane instruments on board the Spitzer Space Telescope. IRAC is a four-channel camera that obtains simultaneous broad-band im…
The Infrared Array Camera (IRAC) for the Spitzer Space Telescope
G. G. Fazio, the IRAC team
The Infrared Array Camera (IRAC) is one of three focal plane instruments in the Spitzer Space Telescope. IRAC is a four-channel camera that obtains simultaneous broad-band images a…
Radio-Infrared Supernebulae in II Zw 40
S. C. Beck, J. L. Turner, L. E. Langland-Shula +3
We report subarcsecond-resolution VLA and Keck mid-infrared imaging of the dwarf starburst galaxy II Zw 40. II Zw 40 contains a bright, compact thermal radio and infrared source wi…
Meausurement of Sky Suface Brightness Fluctuations at lambda = 4 micron
J. Xu, J. J. Bock, K. M. Ganga +6
We present a Monte-Carlo technique to probe the cosmic Infrared background radiation (CIB) with faint source confusion in deep, wide-field 4 micron images. We report a detection of…
Infrared Emission from Clusters in the Starforming Disk of He2-10
S. C. Beck, J. L. Turner, V. Gorjian
We have made subarcsecond-resolution images of the central 10" of the Wolf-Rayet dwarf galaxy He 2-10 at 11.7 microns, using the Long Wavelength Spectrometer on the Keck Telescope.…
Infrared Emission from the Radio Supernebula in NGC 5253: A Proto-Globular Cluster?
Varoujan Gorjian, Jean L. Turner, Sara C. Beck
Hidden from optical view in the starburst region of the dwarf galaxy NGC 5253 lies an intense radio source with an unusual spectrum which could be interpreted variously as nebular…
High Resolution Mid-IR Images of the Nucleus of M81
B. Grossan, V. Gorjian, M. Werner +1
We observed two nearby galaxies with potential or weak indications of nuclear activity, M32 and M81, with the MIRLIN mid-IR camera at N band (10.79 microns). M32 is not detected, b…
The Radio Afterglow and the Host Galaxy of the X-Ray Rich GRB 981226
D. A. Frail, S. R. Kulkarni, J. S. Bloom +9
We report the discovery of a radio transient VLA 232937.2-235553, coincident with the proposed X-ray afterglow for the gamma-ray burst GRB 981226. This GRB has the highest ratio of…
Tentative Detection of the Cosmic Infrared Background at 2.2 and 3.5 microns Using Ground Based and Space Based Observations
V. Gorjian, E. L. Wright, R. R. Chary
The Cosmic InfraRed Background (CIRB) is the sum total of the redshifted and reprocessed short wavelength radiation from the era of galaxy formation, and hence contains vital infor…
A Hubble Space Telescope Imaging Survey of Nearby Active Glactic Nuclei
M. A. Malkan, V. Gorjian, R. Tam
We obtained 500-second F606W WFPC2 images of 256 of the nearest (z<0.035) Seyfert 1,Seyfert 2, and starburst galaxies. Less than 10% show tidal features or multiple nuclei. The inc…