[vsnet-grb-info 12088] GRB 120714B: Redshift from VLT/X-shooter
GCN Circulars
gcncirc at capella2.gsfc.nasa.gov
Sun Jul 15 17:22:58 JST 2012
TITLE: GCN CIRCULAR
NUMBER: 13477
SUBJECT: GRB 120714B: Redshift from VLT/X-shooter
DATE: 12/07/15 08:22:43 GMT
FROM: Antonio de Ugarte Postigo at IAA-CSIC <deugarte at iaa.es>
J.P.U. Fynbo (DARK/NBI), A. de Ugarte Postigo (IAA-CSIC, DARK/NBI),
V. D'Elia (ASDC, INAF), D. Xu (WIS), and D. Malesani (DARK/NBI) report
on behalf of the X-shooter GRB GTO collaboration:
We observed the field of GRB 120714B (Saxton et. al GCN 13471, Marshall &
Saxton GCN 13473) with X-shooter at VLT (Paranal, Chile). Observations started
on 15 July at 5:06 UT (7.8 hr after the burst) and consisted of a total observing
time of 4800 s in each of the UVB, VIS and NIR arms, covering the range
between 3000 and 18000 A.
The spectrum shows a faint continuum where we detect MgII absorption as well
as emission lines of [OII], H-beta, [OIII] and H-alpha at a common redshift of
z=0.3984.
We acknowledge excellent support from the ESO staff, in particular Dimitri
Gadotti.
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