[vsnet-grb-info 8317] GRB 090817 - TLS Observations
GCN Circulars
gcncirc at capella.gsfc.nasa.gov
Thu Aug 27 09:27:55 JST 2009
TITLE: GCN CIRCULAR
NUMBER: 9842
SUBJECT: GRB 090817 - TLS Observations
DATE: 09/08/27 00:27:50 GMT
FROM: Alexander Kann at TLS Tautenburg <kann at tls-tautenburg.de>
D. A. Kann, F. Cusano and F. Ludwig (TLS Tautenburg) report:
We observed the field of the INTEGRAL/Fermi GRB 090817 (Beckmann et al.,
GCN 9815, Wilson-Hodge, GCN 9823) with the 1.34m Tautenburg Schmidt
telescope under good conditions. We obtained 3 x 600 sec Rc images at a
mid-time of 8.015 days after the GRB.
At the position of the X-ray afterglow (Evans, Guidorzi & Baumgartner,
GCN 9819, GCN 9825), the USNO-B1.0 object 1341-0096763 is clearly
detected. Using the comparison star of Rumyantsev, Pozanenko & Andreev
(GCN 9828), we find Rc = 19.54 +/- 0.03 mag. This is in agreement
with the reports of non-variability (Rumyantsev, Pozanenko & Andreev,
GCN 9828, Halpern & Ruan, GCN 9837) of this proposed host galaxy/SN
candidate (Holland, Breeveld & Baumgartner, GCN 9831, GCN 9834), and a
stellar PSF is in full agreement with it being a foreground star (Halpern
& Ruan, GCN 9837, Cenko et al., GCN 9841).
No further observations are planned.
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