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Table 1

Spectral conversion coefficients.

Te (keV) I0f(ν1) I0f(ν2) I0g(ν1) I0g(ν2)

1 3.76 11.63 7.47 12.40
5 3.31 11.34 7.30 12.03
10 2.83 11.00 7.11 11.62
15 2.43 10.71 6.94 11.24
20 2.06 10.38 6.81 10.90
25 1.76 10.17 6.75 10.58

Notes. The units are Jy/beam per unit of ytSZ and Jy/beam per unit of ykSZ for I0f(ν) and I0g(ν), respectively. The frequencies are ν1 = 260 GHz and ν2 = 150 GHz. The uncertainty on the NIKA bandpasses is about 2% (see Adam et al. 2014, for more details) and are included in the overall calibration budget (see Sect. 2.2). The coefficients given here account for the atmospheric absorption based on the Pardo et al. (2001) model for 2 mm precipitable water vapor above the telescope, which slightly changes the effective NIKA bandpasses.

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