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How do I select the most robust sources in the Spitzer Source List?
Posted by Vandana Desai on 03 December 2013 03:56 PM

To retain only the most robust flux densities, apply the following cuts:

1. Make a SNR cut. Each source has 5 columns ending in “FluxType”, four for each of the IRAC channels and one for MIPS-24. Flux densities directly detected in an image with SNR>=3 have *FluxType=1.

2. Eliminate IRAC flux densities that may be affected by a nearby saturated source or a nearby extended source. There are four *FluxFlag columns, one for each IRAC channel. Choose *FluxFlag=0.

3. Eliminate MIPS flux densities that may be affected by a nearby saturated source or a nearby  extended source by choosing M1_BrtFrac<0.5 and M1_ExtFrac<0.5.

4. Remove IRAC flux densities affected by soft saturation. There are four *SoftSatFlag columns,  one for each IRAC channel. Choose *SoftSatFlag=0.

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