grb absorption spectroscopy - Inaf
grb absorption spectroscopy - Inaf
grb absorption spectroscopy - Inaf
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A NEW INSTRUMENT @ THE VLT: X-SHOOTER<br />
High efficiency spectrograph at the UT2 Cassegrain focus<br />
Intermediate resolution (R = 4000-14000)<br />
Wide spectral coverage (3000-25000Å)<br />
Three arms splitting: UVB, VIS, NIR<br />
First light: Nov 2008<br />
In operation: Oct 2009<br />
Suitable to:<br />
• spot GRBs up to z ~ 20<br />
• study host metallicity in a wide redshift<br />
range<br />
• follow line variations with higher temporal<br />
resolution and longer times<br />
• collect good quality GRB spectra up to R ~<br />
21-21.5 (short GRBs)
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