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Table 2

Swift-UVOT U and UVW2 measurements and time-averaged optical magnitudes and fluxes measured with ATOM in R,B, and I Bessel filters.

Filter Energy Magnitude Flux P()
[eV] [10-12  erg  cm-2  s-1] %

UVW2 6.6 17.4 1.99 63
U 3.6 17.2 1.44 94

B 2.88 17.5 3.26 99
R 1.77 15.8 6.09 19
I 1.37 14.2 8.36

Notes.The last column gives the probability obtained when fitting the time series with a constant function. Magnitudes are not corrected for Galactic extinction, whereas fluxes are dereddened using the values of Schlegel et al. (1998).

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