Flux Density Models for setjy

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C.1 Flux Density Models for setjy

setjy adds a source model given the source name, frequency, a standard (really, a set of models), and possibly a time. At cm wavelengths the flux density (FD) calibrators are typically one of several bright extragalactic sources. These objects are comparatively faint and less well characterized at shorter wavelengths, so for (sub)mm astronomy it is common to use Solar System objects.

Reliably setting the FD scale with astronomical calibrators requires that they be bright, not too resolved, and have simple dependencies on frequency and time. These criteria are somewhat mutually exclusive, so the number of calibrator sources supported by setjy is fairly small, although it could certainly be added to. This appendix is for describing the models that setjy uses. Choosing a FD calibrator of course has to be done before the observation and the observatory may provide additional information.

  C.1.1 Long wavelength calibration
   C.1.1.1 Baars
   C.1.1.2 Perley 90
   C.1.1.3 Perley-Taylor 95
   C.1.1.4 Perley-Taylor 99
   C.1.1.5 Perley-Butler 2010
  C.1.2 Short wavelength calibration
  C.1.3 References to this Section

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