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arXiv · 1504.01744

Spitzer Point Source Catalogs of $\sim300,000$ Stars in Seven Nearby Galaxies

Rubab Khan·C. S. Kochanek·K. Z. Stanek·G. Sonneborn
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Abstract

We present Spitzer IRAC $3.6-8$um and MIPS $24$um point-source catalogs for seven galaxies: NGC$6822$, M$33$, NGC$300$, NGC$2403$, M$81$, NGC$0247$, and NGC$7793$. The catalogs contain a total of $\sim300,000$ sources and were created by dual-band selection of sources with $>3σ$ detections at both $3.6$um and $4.5$um. The source lists become significantly incomplete near $m_{3.6}=m_{4.5}\simeq18$. We complement the $3.6$um and $4.5$um fluxes with $5.8$um, $8.0$um and $24$um fluxes or $3σ$ upper limits using a combination of PSF and aperture photometry. This catalog is a resource as an archive for studying mid-infrared transients and for planning observations with the James Webb Space Telescope.

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Rubab Khan, C. S. Kochanek, K. Z. Stanek, G. Sonneborn. 2015-08-10. Spitzer Point Source Catalogs of $\sim300,000$ Stars in Seven Nearby Galaxies. https://doi.org/10.1088/0067-0049%2F219%2F2%2F42

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