{
  "bibcode": "2014GCN.16333....1S",
  "body": "M. H. Siegel (PSU) reports on behalf of the Swift/UVOT team:\n\nArchival UVOT images of the transient reported in M31 (Barthelmy et al., GCN Circ. 16332)\nfrom July 2009 and November 2011 show the known globular cluster B045-G108 at the reported\nUVOT position, 4.5 arc-seconds from the position of the X-ray transient.  Although a direct comparison\nis not possible at this time, we measure the following magnitudes for the object, before and after the\ntrigger, using the UVOT photometric system (Breeveld et al. 2011, AIP Conf. Proc. 1358, 373):\n\nArchival:\nFilter            Mag\nuvw2           19.4+-0.1\nuvm2           19.6+-0.2\nuvw1           18.2+-0.1\n\nPrompt:\nu              17.1+-0.2\nwhite          16.9+-0.1\n\nThe post-explosion u magnitude would be roughly consistent with the pre-explosion NUV magnitudes\ngiven the SED of a typical M31 globular cluster.  However, without processing of the full\npost-outburst data set, we cannot determine if the source has varied in the UV since 2011.",
  "circularId": 16333,
  "createdOn": 1401247150000,
  "email": "siegel@swift.psu.edu",
  "subject": "Swift Trigger 600114 in M31: Archival and Prompt UVOT Imaging",
  "submitter": "Mike Siegel at PSU/Swift MOC  <siegel@swift.psu.edu>"
}