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Spitzer Photometry of Approximately 1 Million Stars in M31 and 15 Other GalaxiesWe present Spitzer IRAC 3.6-8 micrometer and Multiband Imaging Photometer 24 micrometer point-source catalogs for M31 and 15 other mostly large, star-forming galaxies at distances approximately 3.5-14 Mpc, including M51, M83, M101, and NGC 6946. These catalogs contain approximately 1 million sources including approximately 859,000 in M31 and approximately 116,000 in the other galaxies. They were created following the procedures described in Khan et al. through a combination of pointspread function (PSF) fitting and aperture photometry. These data products constitute a resource to improve our understanding of the IR-bright (3.6-24 micrometer) point-source populations in crowded extragalactic stellar fields and to plan observations with the James Webb Space Telescope.
Document ID
20170000992
Acquisition Source
Goddard Space Flight Center
Document Type
Reprint (Version printed in journal)
Authors
Khan, Rubab
(Washington Univ. Seattle, WA, United States)
Date Acquired
January 31, 2017
Publication Date
January 9, 2017
Publication Information
Publication: The Astrophysical Journal Supplement Series
Publisher: The Astrophysical Journal
Volume: 228
Issue: 1
e-ISSN: 1538-4365
Subject Category
Astrophysics
Report/Patent Number
GSFC-E-DAA-TN38969
Distribution Limits
Public
Copyright
Other
Keywords
Photometry
Spitzer
Million

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