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Table 3:

VLT observation log for GRB 071227. Magnitudes are in the Vega system and are not corrected for Galactic absorption.
Mean time Exposure time Time since GRB Seeing Instrument Magnitude Filter / grism
(UT) (s) (days) ( $^{\prime\prime}$)      
2007 Dec. 28.13346 $2 \times 120$ 0.29055 0.7 VLT/FORS2 $23.24 \pm 0.08$ R
2007 Dec. 31.21576 $3 \times 180$ 3.37133 0.7 VLT/FORS2 $23.88 \pm 0.17$ R
2008 Jan 03.11081 $5 \times 180$ 6.26790 0.8 VLT/FORS2 $23.71 \pm 0.16$ R
2008 Jan. 07.09081 $5 \times 180$ 10.24790 0.8 VLT/FORS2 $24.02 \pm 0.21$ R
2008 Jan. 16.22578 $5 \times 180$ 19.38287 0.7 VLT/FORS2 $23.64 \pm 0.14$ R
2008 Jan. 18.09430 $10 \times 180$ 21.25139 0.8 VLT/FORS2 $23.91 \pm 0.19$ R
2008 Jan. 23.06066 $10 \times 180$ 26.21775 0.9 VLT/FORS2 $23.83 \pm 0.31$ R
2008 Feb. 06.10412 $10 \times 180$ 40.26121 1.1 VLT/FORS2 $23.69 \pm 0.13$ R
2007 Dec. 28.21424 $4 \times 1800$ 0.37133 0.7 VLT/FORS2 -- 300V+GG375
Magnitudes from Dec. 31.2 onwards are computed within an annulus with a radius of about $1\hbox{$.\!\!^{\prime\prime}$ }5$ centered on the afterglow position, and are therefore not representative of the host galaxy. Errors are given at a $1\sigma$ confidence level.

Source LaTeX | All tables | In the text

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