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GCN Circular 11635

Subject
GRB 110205A: Possible Lick/Kast redshift
Date
2011-02-05T06:30:21Z (13 years ago)
From
Jason Prochaska at UCO/Lick Obs <xavier@ucolick.org>
R. da Silva (UCO/Lick), M. Fumagalli (UCO/Lick), G. Worseck
(UCO/Lick), and X. Prochaska (UCO/Lick) report on behalf of GRAASP:

"We have observed GRB 110205A with the Kast
dual spectrometer on the 3m Lick telescope for a series of
three 1800s exposures starting at UT 04:47 under variable
conditions and at high air mass.

We observe a significant absorption feature (EW > 100mA) at
~3600Ang which we interpret as a z~1.98 DLA associated with
the GRB host.  We identify additional absorption features at
~3875A and 3980A which are roughly consistent with OI 1302
and CII 1334 transitions at the coincident redshift.

On the other hand, we do not detect a significant feature at CIV
nor any significant features redward of ~6000Ang where we
would expect FeII 2344, 2374, and 2382 absorption."

Further analysis is in progress.
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