Table 1
Log of the NOT, TNG (top), and VLT/X-Shooter observations (bottom).
| NOT and TNG | |||||
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|
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| Mid-time | T GRB | Exp time | Seeing | Filter | Magnitude |
| UTC | (day) | (s) | (′′) | (AB mag) | |
|
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| June 6.89179 | 0.01356 | 30 | 1.6 | NOT/r | 20.51 ± 0.06 |
| June 6.89434 | 0.01611 | 30 | 1.6 | NOT/r | 20.79 ± 0.06 |
| June 6.89727 | 0.01904 | 300 | 1.6 | NOT/r | 20.90 ± 0.03 |
| June 6.90137 | 0.02314 | 300 | 1.8 | NOT/r | 21.19 ± 0.04 |
| June 7.02835 | 0.15012 | 300 | 1.1 | NOT/i | 19.83 ± 0.03 |
| June 7.03241 | 0.15418 | 300 | 1.1 | NOT/r | 22.93 ± 0.08 |
| June 7.90616 | 1.02793 | 5×300 | 0.7 | NOT/z | 21.02 ± 0.03 |
| June 7.92510 | 1.04687 | 4×300 | 0.7 | NOT/i | 23.37 ± 0.08 |
| June 8.15646 | 1.27823 | 7×180 | 1.1 | TNG/i | 23.99 ± 0.14 |
| June 8.17616 | 1.29793 | 7×180 | 1.1 | TNG/z | 21.50 ± 0.04 |
| June 10.1230 | 3.24474 | 3×600 | 0.8 | TNG/z | 22.26 ± 0.14 |
| June 12.0047 | 5.12648 | 8×300 | 0.6 | NOT/z | >22.70 |
| VLT/X-Shooter | |||||
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| Mid-time | T GRB | Exp time | Airmass | Seeing | |
| UTC | (day) | (s) | (′′) | ||
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| June 7.17990 | 0.30167 | 600 | 1.72 | 1.2−0.9 | |
| June 7.18809 | 0.30986 | 600 | 1.72 | 1.2−0.9 | |
| June 7.19899 | 0.32076 | 600 | 1.73 | 1.2−0.9 | |
| June 7.20707 | 0.32884 | 600 | 1.74 | 1.2−1.0 | |
| June 7.23147 | 0.35324 | 600 | 1.77 | 1.4−1.2 | |
| June 7.23955 | 0.36132 | 600 | 1.88 | 1.1−0.9 | |
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| Average values | |||||
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| June 7.20751 | 0.32928 | 600 | 1.76 | 1.22−0.97 | |
Notes. Top: NOT and TNG, (1) mid-time of observations; (2) time since the burst (observer’s frame); (3) exposure time; (4) seeing; (5) filter; and (6) measured magnitude. Bottom: VLT/X-Shooter, (1) mid-time of observations; (2) time since the burst (observer’s frame); (3) exposure time; (4) average airmass; and (5) average seeing measured in the VIS and NIR 2D spectra. The last line contains the average values for the combined VLT/X-Shooter observations.
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