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Comparison of 3.6 - 8.0 Micron Spitzer/IRAC Galactic Center Survey Point Sources with Chandra X-Ray Point Sources in the Central 40x40 Parsecs
R. G. Arendt, D. Y. Gezari, S. R. Stolovy +8
We have studied the correlation between 2357 Chandra X-ray point sources in a 40 x 40 parsec field and ~20,000 infrared sources we observed in the corresponding subset of our 2 x 1…
The Mid-Infrared Colors of the ISM and Extended Sources at the Galactic Center
R. G. Arendt, S. R. Stolovy, S. V. Ramírez +6
A mid-infrared (3.6-8 um) survey of the Galactic Center has been carried out with the IRAC instrument on the Spitzer Space Telescope. This survey covers the central 2x1.4 degree (~…
Infrared Echoes Reveal the Shock Breakout of the Cas A Supernova
Eli Dwek, Richard G. Arendt
(Condensed form) - The serendipitous discovery of infrared echoes around the supernova remnant of Cas A by the Spitzer satellite has provided astronomers with a unique opportunity…
Infrared and X-Ray Evidence for Circumstellar Grain Destruction by the Blast Wave of Supernova 1987A
E. Dwek, R. G. Arendt, P. Bouchet +10
Multiwavelength observations of supernova remnant (SNR) 1987A show that its morphology and luminosity are rapidly changing at X-ray, optical, infrared, and radio wavelengths as the…
Point Sources from a Spitzer IRAC Survey of the Galactic Center
Solange V. Ramirez, Richard G. Arendt, Kris Sellgren +4
We have obtained Spitzer/IRAC observations of the central 2.0 x 1.4 degrees (~280 x 200 pc) of the Galaxy at 3.6-8.0 microns. A point source catalog of 1,065,565 objects is present…
Demonstrating the negligible contribution of optical ACS/HST galaxies to source-subtracted cosmic infrared background fluctuations in deep IRAC/Spitzer images
A. Kashlinsky, R. G. Arendt, J. Mather +1
We study the possible contribution of optical galaxies detected with the {\it Hubble} ACS instrument to the near-IR cosmic infrared (CIB) fluctuations in deep {\it Spitzer} images.…
Determination of the Far-Infrared Cosmic Background Using COBE/DIRBE and WHAM Data
N. Odegard, R. G. Arendt, E. Dwek +3
Determination of the cosmic infrared background (CIB) at far infrared wavelengths using COBE/DIRBE data is limited by the accuracy to which foreground interplanetary and Galactic d…
Dust-Gas Interaction in SNR 1987A
Eli Dwek, Richard G. Arendt
Multiwavelength observations of SNR 1987A show that its morphology is rapidly changing at X-ray, radio, and optical wavelengths as the blast wave from the explosion expands into th…
Masers as Probes of Massive Star Formation in the Nuclear Disk
F. Yusef-Zadeh, R. G. Arendt, C. O. Heinke +9
OH(1720 MHz) and methanol masers are now recognized to be excellent probes of the interactions of supernova remnants with molecular clouds and tracers of massive star formation, re…
On the nature of the sources of the cosmic infrared background
A. Kashlinsky, R. G. Arendt, J. Mather +1
We discuss interpretation of the cosmic infrared background (CIB) anisotropies detected by us recently in the Spitzer IRAC based measurements. The fluctuations are approximately is…
New measurements of cosmic infrared background fluctuations from early epochs
A. Kashlinsky, R. G. Arendt, J. Mather +1
Cosmic infrared background fluctuations may contain measurable contribution from objects inaccessible to current telescopic studies, such as the first stars and other luminous obje…
SN 1987A After 18 Years: Mid-Infrared GEMINI and SPITZER Observations of the Remnant
Patrice Bouchet, Eli Dwek, I. John Danziger +6
We present high resolution 11.7 and 18.3um mid-IR images of SN 1987A obtained on day 6526 with T-ReCS attached to the Gemini telescope. The 11.7um flux has increased significantly…
Tracing the first stars with cosmic infrared background fluctuations
A. Kashlinsky, R. G. Arendt, J. Mather +1
The deepest space and ground-based observations find metal-enriched galaxies at cosmic times when the Universe was <1 Gyr old. These stellar populations had to be preceded by the m…
The Near Infrared Background: Interplanetary Dust or Primordial Stars?
Eli Dwek, Richard G. Arendt, Frank Krennrich
The intensity of the diffuse ~ 1 - 4 micron sky emission from which solar system and Galactic foregrounds have been subtracted is in excess of that expected from energy released by…
Is There an Imprint of Primordial Stars in the Tev Gamma-Ray Spectrum of Blazars?
Eli Dwek, Frank Krennrich, Richard G. Arendt
The 1 - 5 micron diffuse sky emission from which local foreground emission from the solar system and the Galaxy have been subtracted exceeds the brightness that can be attributed t…
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 IRAC Shallow Survey
P. R. Eisenhardt, D. Stern, M. Brodwin +24
The IRAC shallow survey covers 8.5 square degrees in the NOAO Deep Wide-Field Survey in Bootes with 3 or more 30 second exposures per position. An overview of the survey design, re…
Deep mid-infrared observations of Lyman-break galaxies
P. Barmby, J. -S. Huang, G. G Fazio +15
As part of the In-Orbit Checkout activities for the Spitzer Space Telescope, the IRAC team carried out a deep observation (average integration time ~8 hours) of a field surrounding…
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…
Number Counts At 3 < lambda < 10 um From the Spitzer Space Telescope
G. G. Fazio, M. L. N. Ashby, P. Barmby +12
Infrared source counts at wavelengths 3 < lambda < 10 um cover more than 10 magnitudes in source brightness, four orders of magnitude in surface density, and reach an integrated su…
Detecting Population III stars through observations of near-IR cosmic infrared background anisotropies
A. Kashlinsky, R. Arendt, Jonathan P. Gardner +2
Following the successful mapping of the last scattering surface by WMAP and balloon experiments, the epoch of the first stars, when Population III stars formed, is emerging as the…
New Interstellar Dust Models Consistent with Extinction, Emission, and Abundance Constraints
Viktor Zubko, Eli Dwek, Richard G. Arendt
We present new interstellar dust models which have been derived by simultaneously fitting the far-ultraviolet to near-infrared extinction, the diffuse infrared (IR) emission and, u…
Probing Interstellar Dust Models Through SAXS (Small Angle X-Ray Scattering)
Eli Dwek, Viktor Zubko, Richard G. Arendt +1
A viable interstellar dust model - characterized by the composition, morphology, and size distribution of the dust grains and by the abundance of the different elements locked up i…
An Empirical Decomposition of Near-IR Emission into Galactic and Extragalactic Components
Richard G. Arendt, Eli Dwek
We decompose the COBE/DIRBE observations of the near-IR sky brightness (minus zodiacal light) into Galactic stellar and interstellar medium (ISM) components and an extragalactic ba…