[vsnet-grb-info 4005] GRB 060111B: Swift UVOT Refined Magnitudes

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  5820
SUBJECT: GRB 060111B: Swift UVOT Refined Magnitudes
DATE:    06/11/13 14:13:58 GMT
FROM:    Stephen Holland at USRA/NASA/GSFC/SSC  <sholland at milkyway.gsfc.nasa.gov>

S. T. Holland (NASA/GSFC & USRA) reports on behalf of the UVOT team:

      The UVOT data for GRB 060111B (Perri, et al. 2006, GCN
Circ. 4487) on January 11, 2006 has been reanalysed.  We find the
following magnitudes and 3-sigma upper limits in the early UVOT
exposures.  The start and stop times are relative to the BAT trigger
time, 20:15:43 UT.

Filter     Start   Stop   Exposure    Mag   Err
              (s)    (s)     (s)

Early Exposures
    V          83    282     197      17.4   0.1
    V         542    562      19      18.0   3-sigma upper limit
    V         831   1031     197      19.4   3-sigma upper limit
    B         289    489     197      20.5   3-sigma upper limit
    B         638    658      19      18.9   3-sigma upper limit
    U         614    633      19      18.4   3-sigma upper limit
  UVW1        590    610      19      18.0   3-sigma upper limit
  UVM2       6017   6217     197      20.0   3-sigma upper limit
  UVW2        518    538      19      17.5   3-sigma upper limit
White        494    514      19      19.4   3-sigma upper limit

Coadded Esposures
    V         542  52472    2435      21.0   3-sigma upper limit
    B         638  70515    5861      22.4   3-sigma upper limit
    U         614  69818    6008      22.0   3-sigma upper limit
  UVW1        590  68905    4089      22.2   3-sigma upper limit
  UVM2        566  53170    3663      22.2   3-sigma upper limit
  UVW2        519  58952    3662      22.4   3-sigma upper limit
White        494  64734    3696      22.2   3-sigma upper limit



The values quoted above are not corrected for the expected Galactic
extinction of E_{B-V} = 0.11 mag (Schlegel et al. 1998).

      These data supercede those reported in GCN Circ. 4487.  We note
that the B-band detection reported in GCN Circ. 4487 is not real, and
the initial finding chart was taken with the V filter, not the B
filter as previously reported.  The UVOT team apologizes for these
errors.