[vsnet-grb-info 10187] GRB 110205A: Possible Lick/Kast redshift

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  11635
SUBJECT: GRB 110205A: Possible Lick/Kast redshift  
DATE:    11/02/05 06:30:21 GMT
FROM:    Jason Prochaska at UCO/Lick Obs  <xavier at 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.