[vsnet-grb-info 8140] GRB090715B: WHT redshift
GCN Circulars
gcncirc at capella.gsfc.nasa.gov
Thu Jul 16 14:19:09 JST 2009
TITLE: GCN CIRCULAR
NUMBER: 9673
SUBJECT: GRB090715B: WHT redshift
DATE: 09/07/16 05:19:03 GMT
FROM: Klaas Wiersema at U of Leicester <kw113 at star.le.ac.uk>
K. Wiersema (Leicester), A. Levan (Warwick), A. Kamble (Amsterdam), N.
Tanvir (Leicester) and D. Malesani (DARK/NBI) report on behalf of a larger
collaboration:
We observed the afterglow of GRB090715B (Vetere et al, GCN 9668; Smith et
al GCN9 670) with the William Herschel Telescope, using the ISIS
spectrograph. Exposure times were 3 x 900 seconds with the R300B and R316R
grisms in the blue and red arm respectively, starting at 23:46 UT. We
detect a multitude of lines, including Lyman alpha, Lyman beta, SiII and
SII at redshift z=3.00.
We thank T. Ottosen for acquiring this dataset.
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