# SN2007bg magnitudes from Swift UVOT # generated Fri Oct 2 18:00:08 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 -0.0869080 0.109792 # B 0.0187348 0.114075 # U 0.0198392 0.0688961 # UVW1 0.0206004 0.00741543 # UVM2 0.0128591 0.00475769 # UVW2 0.0157402 0.00788637 # # 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] # UVW2 54212.6644 NULL NULL 21.630 11.085 0.010 0.006 3.0 0.0110 3139.91 41450.91 # UVM2 54212.6714 21.317 0.341 21.425 10.555 0.016 0.005 3.0 0.0110 2185.53 41298.55 # UVW1 54212.6565 21.365 0.354 21.423 11.146 0.027 0.009 3.0 0.0110 1568.05 41197.27 # U 54212.6589 20.086 0.253 20.503 12.051 0.200 0.047 3.0 0.0110 781.65 41059.13 # B 54212.6605 19.757 0.151 20.802 12.833 0.551 0.077 3.0 0.0110 781.66 41057.74 # V 54212.6684 18.627 0.150 19.658 11.604 0.507 0.070 3.0 0.0110 781.66 41043.40 #