=========== Draft Upper Limit Circular ========

GRB 140909A: Swift/UVOT Upper Limits

M. H. Siegel (PSU) and E. Sonbas (Adiyaman Univ.)
report on behalf of the Swift/UVOT team:

The Swift/UVOT began settled observations of the field of GRB 140909A
44028 s after the BAT trigger (Palmer et al., GCN Circ. 16808).
No optical afterglow consistent with the BAT position
(Palmer GCN Circ. 16808)
is detected in the initial UVOT exposures.
Preliminary 3-sigma upper limits using the UVOT photometric system
(Breeveld et al. 2011, AIP Conf. Proc. 1358, 373) for the initial exposures are:

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

white            44028        56310         3213         >22.0

The magnitudes in the table are not corrected for the Galactic extinction
due to the reddening of E(B-V) = 0.015 in the direction of the burst
(Schlegel et al. 1998).