Planck 2013 results. V. LFI calibration | Astronomy & Astrophysics (A&A)

Planck 2013 results

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Table 9

Properties of three compact calibrators used to check the calibration: Orion A (M 42); Cas A; and Tau A (M 1).

Property	Orion A	Cas A	Tau A

Position (l,b)	(209.̊01, −19.̊38)	(111.̊74, −02.̊14)	(184.̊56, −5.̊78)

[Jy]^a	365 ± 2	192.0 ± 1.4	352.4 ± 0.9
[Jy]	341 ± 3	137.0 ± 1.2	301.8 ± 1.3
[Jy]	301 ± 3	102.3 ± 0.5	260.0 ± 0.9

A^b	370.5 ± 1.7	179.9 ± 0.8	319.1 ± 1.0
α^b	−0.026 ± 0.014	−0.668 ± 0.014	−0.287 ± 0.013

[Jy]^c	384 ± 4 (1.0%)	204 ± 3 (1.5%)	340 ± 4 (1.3%)
[Jy]	373 ± 2 (0.5%)	151 ± 2 (1.2%)	299 ± 2 (0.5%)
[Jy]	372 ± 10 (2.7%)	110 ± 4 (3.9%)	255 ± 11 (4.2%)

[Jy]^d	375 ± 4 (1.0%)	198 ± 3 (1.5%)	334 ± 4 (1.2%)
[Jy]	370 ± 3 (0.7%)	149 ± 2 (1.5%)	296 ± 1.2 (0.4%)
[Jy]	364 ± 7 (2.0%)	106 ± 3 (2.8%)	249 ± 4 (1.8%)

Notes.

^(a)

Flux densities from PCCS, without colour correction.

^(b)

Coefficients for the fitted power law, S = A(ν/ 33 GHz)^α.

^{(c )}

Average and standard deviation of the flux densities measured by photometry within a fixed aperture.

^(d)

Average and standard deviation of the colour-corrected aperture photometry flux densities.

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