# SN2008ex magnitudes from Swift UVOT # generated Fri Oct 2 19:37:59 CDT 2015 using version 2015.1 # of Peter Brown's photometry pipeline # and version Swift_Rel4.2(Bld31)_25Nov2013 of HEASOFT # # Data comes from the Swift Data Center # A 5 arcsec aperture is used to measure the counts for the coincidence loss correction, # a 3 or 5 arcsec source aperture (based on the error) was used for the aperture photometry # subtracting off the galaxy count rate in a template image (if available), # and applying an aperture correction as appropriate (based on average psf in Swift CALDB) # and zeropoints from Breeveld et al. (2011) which update Poole et al. (2008) # including a time-dependent sensitivity loss # to put the magnitudes on the UVOT photometric system described in that paper. # The sensitivity correction has been updated based on the 2015 redetermination. # # Brown, P. J., Holland, S. T., Immler, S., et al. 2009, ApJ, 137, 4517 # Brown, P. J., et al. 2014, Ap&SS, submitted # Breeveld, A. A., Landsman, W., Holland, S. T., et al. 2011, in AIP Conf. Proc. 1358, # Gamma-Ray Bursts 2010, ed. J. E. McEnergy, J. L. Racusin, & N. Gehrels # (Melville, NY: AIP), 373; arXiv:1102.4717 # Poole, T. S., Breeveld, A. A., Page, M. J., et al. 2008, MNRAS, 383, 627 # # # # The underlying galaxy had the following count rates # in a 5 arcsec aperture at the source position # (missing filters list 0 but used a background region similar to the SN ): # Galaxy count rates in 5" aperture # V 3.06388 0.225599 # B 4.53887 0.317664 # U 2.35207 0.166132 # UVW1 0.580204 0.0455251 # UVM2 0.200697 0.0211745 # UVW2 0.332843 0.0268652 # # There are no known issues with this photometry. # # Filter MJD[days] Mag MagErr 3SigMagLim 0.98SatLim[mag] Rate[c/s] RateErr[c/s] Ap[arcsec] Frametime[s] Exp[s] Telapse[s] # # UVM2 54984.3157 NULL NULL 20.132 10.558 0.004 0.016 3.0 0.0110 2006.66 46301.28 # UVW1 54984.3196 NULL NULL 19.943 11.162 -0.014 0.033 3.0 0.0110 1470.99 45943.57 # U 54984.6529 NULL NULL 19.827 12.090 0.078 0.092 3.0 0.0110 1044.57 11615.63 # B 54984.6564 NULL NULL 20.007 12.935 0.020 0.158 3.0 0.0110 855.54 11857.84 # #