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Table 2

Aperture count rates for the total intensity, I*, the azimuthal polarization, Qϕ, and the ratio, Qϕ/I*, for RX J1604 for each observing date.

Epochs
(×104 s−1) (×104 s−1) (%)
ZIMPOL R band
   Jun 11, 2015 55.9 ± 0.5 0.246 ± 0.020 0.439 ± 0.033
IRDIS J band
   Aug 14, 2017 96.7(a) 1.043 ± 0.029 1.08 ± 0.03
   Aug 15, 2017 91.6(a) 1.051 ± 0.044 1.15 ± 0.05
   Aug 18, 2017 96.5(a) 1.122 ± 0.024 1.16 ± 0.03
   Aug 19, 2017 93.3(a) 1.117 ± 0.029 1.20 ± 0.03
   Aug 22, 2017 96.4(a) 1.157 ± 0.020 1.20 ± 0.02
   mean 94.9 ± 2.1 1.104 ± 0.054 1.16 ± 0.08
IRDIS H band
   Jul 1, 2016 123. ± 18.(b) 1.40 ± 0.21 (1.13 ± 0.34)

Notes. Average values and standard deviations are given for sets of identical measurements: (a)single intensity measurement, (b)single measurement with an adopted relative uncertainty comparable to the variation of the same night.

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