[vsnet-grb-info 15108] GRB 140614B: Swift/UVOT Upper Limits

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  16400
SUBJECT: GRB 140614B: Swift/UVOT Upper Limits
DATE:    14/06/14 15:28:38 GMT
FROM:    Paul Kuin at MSSL  <npkuin at gmail.com>

N. P. M. Kuin (UCL-MSSL) and K. L. Page (U Leicester)
report on behalf of the Swift/UVOT team:

The Swift/UVOT began settled observations of the field of GRB 140614B
132 s after the BAT trigger (Page et al., GCN Circ. 16394).
No optical afterglow consistent with the XRT position
(Evans et al. GCN Circ. 16395)
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 first
finding chart (FC) exposure and subsequent exposures are:

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

white_FC           132          282          147         >21.0
u_FC               291          540          246         >20.4
white              132         6723          766         >22.2
v                  621         7133          490         >20.1
b                  546         6518          471         >20.9
u                  291         6314          697         >20.8
w1                 670         6108          293         >20.5
m2                1073         7222          298         >20.1
w2                 597         6929          471         >21.0

The magnitudes in the table are not corrected for the Galactic extinction
due to the reddening of E(B-V) = 0.08 in the direction of the burst
(Schlegel et al. 1998).