TITLE: GCN CIRCULAR NUMBER: 6052 SUBJECT: GRB 070126: Swift/UVOT refined analysis DATE: 07/01/29 17:37:37 GMT FROM: Stefan Immler at NASA/GSFC S. Immler (NASA/USRA) and L. Vetere (PSU) report on the behalf of the Swift UVOT team: An extended source is found at the position reported by Malesani et al. (GCN 6046) in UVOT images of GRB 070126, consistent with the position of the XRT source (Vetere & Racusin, GCN 6045). The source is also present in DSS images and could be the host galaxy of the faint burst. The table below gives the measured UVOT magnitudes. The position of the burst is outside the UVOT field-of-view for all other filters. Filter T_start T_end Exposure Mag Error WHITE 123 6146 590 21.8 0.4 UVW1 3900 40895 3592 21.0 0.3 UVM2 5128 40337 3333 21.5 0.3 UVW2 4719 6214 2588 >20.4 (3-sigma UL) T_start and T_end are the start and stop times of the summed exposures in seconds from the trigger. No correction has been made for the expected extinction corresponding to E(B-V) = 0.05 mag (Schlegel et al. 1998).