Photometric calibration of HD 179218 in the CanariCam filters using the photometric standards reported in Col. (3).
|Filter||Flux sci [Jy]||Cal||Flux cal [Jy]|
|PAH-1||14.9 ± 0.4||HD 169414||19.2|
|PAH-1||15.3 ± 0.4||HD 187642||43.3|
|PAH-2||22.4 ± 0.6||HD 169414||12.2|
|PAH-2||22.1 ± 0.4||HD 187642||25.4|
|Si-6||16.8 ± 1.7||HD 169414||9.9|
|Si-6||16.2 ± 0.7||HD 187642||20.8|
Notes. The reported errors are 3σ uncertainties. The larger uncertainty obtained with HD 169414 in the Si-6 filters is due to the initial poorer conditions of the night. We note that the uncertainties reflect only the photometric stability of our measurement. It is however known that many of the Cohen standards show some variability, which results in an absolute photometric accuracy of about 10%.
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