Astronomy and Astrophysics – Astronomy
Scientific paper
May 2007
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007sptz.prop40106m&link_type=abstract
Spitzer Proposal ID #40106
Astronomy and Astrophysics
Astronomy
Scientific paper
During the past year, the Principal Investigator has worked closely with Spitzer's Infrared Array Camera (IRAC) Instrument Team to demonstrate that his NASA- funded MATPHOT algorithm for precision stellar photometry and astrometry can yield an improvement in the precision of stellar photometry obtained from IRAC Ch1 observations of bright stars of more than 100% over the best results obtained with aperture photometry using the calibration procedures recommended in the IRAC Data Handbook. We propose to analyze archival observations of bright stars obtained with IRAC Ch1 and Ch2 with the goal of developing new calibration procedures that have the potential of significantly improving the precision of point-source photometry. This timely research effort is intended to enhance the science return not only of existing IRAC Ch1 and Ch2 observations in the Spitzer data archive but also those that will be made during Spitzer's warm mission which will start around April 2009 after all of the cryogen is depleted. One or more articles describing the new calibration procedures will be submitted for publication in the refereed literature no later than 1 October 2008; the results of this archival research effort will also be presented to the space science community at scientific conferences and posted on a web site dedicated to this project on the web servers of the National Optical Astronomy Observatory.
Glaccum William
Hoffmann William
Mighell Kenneth
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