The Infrared Array Camera (IRAC) for the Spitzer Space Telescope
The Infrared Array Camera (IRAC) is one of three focal plane instruments on the Spitzer Space Telescope. IRAC is a four-channel camera that obtains simultaneous broadband images at 3.6, 4.5, 5.8, and…
Absolute Calibration of the Infrared Array Camera on the Spitzer Space Telescope
- W. Reach, S. Megeath, G. Fazio
- Physics
- 6 July 2005
The Infrared Array Camera (IRAC) on the Spitzer Space Telescope is absolutely calibrated by comparing photometry of a set of A stars near the north ecliptic pole to predictions based on ground‐based…
A SPITZER SURVEY OF YOUNG STELLAR CLUSTERS WITHIN ONE KILOPARSEC OF THE SUN: CLUSTER CORE EXTRACTION AND BASIC STRUCTURAL ANALYSIS
- R. Gutermuth, S. Megeath, P. Myers, L. Allen, J. Pipher, G. Fazio
- Physics, Geology
- 1 June 2009
It is demonstrated that near-uniform source spacingsmore » in cluster cores are common, suggesting that simple Jeans fragmentation of parsec-scale cloud clumps may be the dominant process governing star formation in nearby clusters and groups.
Spectral Irradiance Calibration in the Infrared. XIV. The Absolute Calibration of 2MASS
- M. Cohen, W. Wheaton, S. Megeath
- Physics
- 18 April 2003
Element by element, we have combined the optical components in the three cameras of the Two Micron All Sky Survey (2MASS), and incorporated detector quantum efficiency curves and site-specific…
Infrared Array Camera (IRAC) Colors of Young Stellar Objects
We compare the infrared colors predicted by theoretical models of protostellar envelopes and protoplanetary disks with initial observations of young stellar objects made with the Infrared Array…
Infrared Extinction toward Nearby Star-forming Regions
- K. Flaherty, J. Pipher, G. Fazio
- Physics
- 29 March 2007
We present an independent estimate of the interstellar extinction law for the Spitzer IRAC bands, as well as a first attempt at extending the law to the 24 μm MIPS band. The source data for these…
A map of the day–night contrast of the extrasolar planet HD 189733b
- H. Knutson, D. Charbonneau, S. Megeath
- Physics, GeologyNature
- 7 May 2007
Observations of HD 189733, the closest of these eclipsing planetary systems, over half an orbital period are reported, from which a ‘map’ of the distribution of temperatures is constructed, indicating that energy from the irradiated dayside is efficiently redistributed throughout the atmosphere.
Detection of Thermal Emission from an Extrasolar Planet
- D. Charbonneau, L. Allen, A. Sozzetti
- Physics, Geology
- 21 March 2005
We present Spitzer Space Telescope infrared photometric time series of the transiting extrasolar planet system TrES-1. The data span a predicted time of secondary eclipse, corresponding to the…
IRAC Observations of Taurus Pre-Main-Sequence Stars
- L. Hartmann, S. Megeath, G. Fazio
- Physics, Geology
- 16 May 2005
We present infrared photometry obtained with the IRAC camera on the Spitzer Space Telescope of a sample of 82 pre-main-sequence stars and brown dwarfs in the Taurus star-forming region. We find a…
THE SPITZER SPACE TELESCOPE SURVEY OF THE ORION A AND B MOLECULAR CLOUDS. I. A CENSUS OF DUSTY YOUNG STELLAR OBJECTS AND A STUDY OF THEIR MID-INFRARED VARIABILITY
- S. Megeath, R. Gutermuth, G. Fazio
- Physics
- 18 September 2012
We present a survey of the Orion A and B molecular clouds undertaken with the IRAC and MIPS instruments on board Spitzer. In total, five distinct fields were mapped, covering 9 deg2 in five mid-IR…
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