Table 1
Details of the observations of GRB hosts in the sample.
| GRB host |
|
Date | Instrument | Exp. time | Slit width* | Dispersion | Wavelength range | Seeing | Airmass | Reference | |
| (mag) | (s) | (″) | (Å/pixel) | (Å) | (″) | ||||||
|
|
|||||||||||
| 050416A | 0.026 | 2011-01-19 | VLT/X-Shooter | 4 × 900/4 × 900/12 × 300 | 1.0/0.9/0.9 | 0.4/0.4/1.0 | 3000–25 000 | 0.7 | 1.5 | (1) | |
| 050525A | 0.083 | 2012-09-18 | VLT/X-Shooter | 4 × 630/4 × 664/4 × 695 | 1.0/0.9/0.9JH | 0.4/0.4/1.0 | 3000–20000 | 1.5 | 1.6 | (1) | |
| 060614 | 0.019 | 2006-07-23 | VLT/FORS2 | 1 × 1500 | 1.0 | 3.3 | 3000–9600 | 1.2 | 1.2 | (2) | |
| 2007-04-26 | VLT/FORS1 | 2 × 1200 | 1.3 | 1.5 | 3600–6000 | 0.8 | 1.5 | (3) | |||
| 060912A | 0.046 | 2012-09-21 | VLT/X-Shooter | 2 × 900/2 × 934/2 × 965 | 1.3/1.2/1.2 | 0.4/0.4/1.0 | 3000–25 000 | 0.7 | 1.5 | (1) | |
| 061021 | 0.051 | 2013-03-21 | VLT/X-Shooter | 12 × 940/12 × 900/36 × 320 | 1.0/0.9/0.9JH | 0.4/0.4/1.0 | 3000–20000 | 0.9 | 1.1 | (1) | |
| 071112C† | 0.105 | 2007-11-13 | VLT/FORS2 | 2 × 1800 | 1.0 | 3.3 | 3000–9500 | 1.0 | 1.7 | (4) | |
| 080319B | 0.010 | 2014-02-26 | GTC/OSIRIS | 4 × 825 | 1.23 | 2.6 | 5100–10 000 | 0.8 | 1.1 | (3) | |
| 2014-02-28 | GTC/OSIRIS | 4 × 825 | 1.23 | 2.6 | 5100–10 000 | 1.2 | 1.1 | (3) | |||
| 080430 | 0.011 | 2014-01-07 | GTC/OSIRIS | 8 × 825 | 1.23 | 2.6 | 5100–10 000 | 1.1 | 1.1 | (3) | |
| 080916A | 0.017 | 2008-09-17 | VLT/FORS1 | 6 × 600 | 1.0 | 3.3 | 3000–9500 | 0.8 | 1.2 | (4) | |
| 081007 | 0.014 | 2015-05-16 | VLT/X-Shooter | 4 × 700/4 × 700/12 × 250 | 1.3/1.2/1.2 | 0.4/0.4/1.0 | 3000–25000 | 1.0-2.1 | 1.2 | (3) | |
| 2015-06-20 | VLT/X-Shooter | 8 × 700/8 × 700/24 × 250 | 1.3/1.2/1.2 | 0.4/0.4/1.0 | 3000–25000 | 0.8-1.0 | 1.1 | (3) | |||
| 2008-11-03 | VLT/FORS2 | 3 × 2700 | 1.0 | 3.2 | 5700–10 000 | 0.5 | 1.1 | (5) | |||
| 090424 | 0.022 | 2009-05-22 | VLT/FORS2 | 3 × 3600 | 1.0 | 3.2 | 6000–10 200 | 0.7 | 1.4 | (5) | |
| 2013-04-08 | GTC/OSIRIS | 3 × 800 | 1.23 | 2.1 | 3630–7500 | 0.9 | 1.1 | (5) | |||
| 091018† | 0.026 | 2009-10-18 | VLT/X-Shooter | 4 × 600/4 × 600/4 × 600 | 1.0/0.9/0.9 | 0.4/0.4/1.0 | 3000–25 000 | 0.9 | 2.0 | (6) | |
| 091127† | 0.035 | 2010-02-12 | VLT/X-Shooter | 4 × 1500/4 × 1500/4 × 750 | 1.0/0.9/0.9 | 0.4/0.4/1.0 | 3000–25 000 | 1.0 | 1.1 | (7) | |
| 100621A | 0.027 | 2012-10-16 | VLT/X-Shooter | 2 × 1200/2 × 1200/8 × 300 | 1.0/0.9/0.9JH | 0.4/0.4/1.0 | 3000–20000 | 0.9 | 1.3 | (1) | |
Notes. For each GRB we report Galactic reddening in its line of sight and the information regarding the spectroscopic observation of its host galaxy: date of observation, telescope and instrument, instrumental setup (exposure time, slit widths, dispersion, wavelength range of the obtained spectrum), observing conditions (seeing and airmass), and the reference of the first published work presenting the spectrum.
0.9JH stands for the X-Shooter near-infrared slits with a special K-blocking filter (Vernet et al. 2011).
Reference. (1) Krühler et al. (2015); (2) Della Valle et al. (2006); (3) This study; (4) Fynbo et al. (2009); (5) Jin et al. (2013); (6) Wiersema et al. (2012); (7) Vergani et al. (2011).
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