2009CBET.1780....3G

Archival GALEX data from 2008 June 5 show a well-detected source at this location in Medium Imaging Survey (MIS) far-ultraviolet (FUV; 135-175 nm) and near-ultraviolet (NUV; 175-300 nm) images, at the following magnitudes: [NUV] = 19.93 ± 0.04; [FUV] = 21.18 ± 0.09. Five-sigma detection limits in MIS images are about 22.6 for FUV and about 22.7 for NUV. No source is seen in any earlier All Sky Imaging Survey (AIS) images (5-sigma detection limits in AIS images are about 19.9 for FUV and about 20.8 for NUV), including 2004 May 17, indicating a brightening in AIS/NUV by at least 1 magnitude. Co-added images from the Sloan Digital Sky Survey (all filters) reveal the presence of a possible host galaxy near magnitude r = 23, corresponding to an absolute r magnitude of about -13 at the redshift of 2008iy.