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Warm Spitzer IRAC Photometry: dependencies on observing mode and exposure time
Jessica E. Krick, Patrick J. Lowrance, Sean Carey +7
We investigate differences in Spitzer/IRAC 3.6 and 4.5micron photometry that depend on observing strategy. Using archival calibration data we perform an in-depth examination of the…
Testing for Dark Matter in the Outskirts of Globular Clusters
Raymond G. Carlberg, Carl J. Grillmair
The proper motions of stars in the outskirts of globular clusters are used to estimate cluster velocity dispersion profiles as far as possible within their tidal radii. We use indi…
Spitzer IRAC observations of JWST calibration stars
Jessica E. Krick, Patrick Lowrance, Sean Carey +10
We present infrared photometry of all 36 potential JWST calibrators for which there is archival Spitzer IRAC data. This photometry can then be used to inform stellar models necessa…