The Supernova Legacy Survey 3-year sample: Type Ia supernovae photometric distances and cosmological constraints

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Table 8

Calibration systematic uncertainties.

	g _M	r _M	i _M	z _M


MegaCam magnitude system^†	±0.005	±0.005	±0.008	±0.019
Low S/N PSF photometry bias	<0.001^*	<0.002	<0.001	<0.001^*
Calibration of the PSF photometry	±0.002	±0.002	±0.002	±0.002

Total	±0.006	±0.006	±0.008	±0.019


Central wavelength of effective filters	±7 Å	±7 Å	±7 Å	±25 Å

Notes.

^†

Including the uncertainties on the conversion of magnitudes to fluxes obtained with BD+17 4708 spectrum, see Table 12 of R09.

Potential bias due to the uncertainty on the weighted average position from r_M and i_M fit.

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