[vsnet-grb-info 14507] GRB140209A: Swift/UVOT observations.

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  15821
SUBJECT: GRB140209A: Swift/UVOT observations.
DATE:    14/02/12 12:43:35 GMT
FROM:    Massimiliano de Pasquale at MSSL-UCL  <m.depasquale at ucl.ac.uk>

M. De Pasquale (MSSL-UCL) & S. B. Cenko (GSFC) report on behalf of the 
Swift team:

Swift/UVOT started observations of GRB140209A (Cenko et al., GCN Circ. 
15808) 188.1
ks after the burst trigger.
No optical counterpart is detected at the position of XRT counterpart 
(D'Elia et al.,
GCN Circ 15819) and the P60 Source (Perley et al., GCN Circ 15809) in summed
exposures.

Preliminary 3-sigma upper limit using the UVOT photometric system 
(Breeveld et al al.
2011, AIP Conf. Proc. 1358, 373) is:

Filter   T_start (s)  T_stop (s)  Exp(s)     Mag

white    188075       195531      2689     >22.7

No correction has been made for the expected Galactic extinction 
corresponding
to E(B-V) = 0.03 in the direction of the burst (Schlegel et al. 1998).