# SN2020nxt magnitudes from Swift UVOT # generated Mon Mar 1 15:00:32 CST 2021 using version 2015.1 # of Peter Brown's photometry pipeline # and version Swift_Rel4.5(Bld34)_27Jul2015 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 2.68195 0.252205 # B 4.75643 0.382018 # U 2.35236 0.225885 # UVW1 0.794282 0.0694476 # UVM2 0.399706 0.0288420 # UVW2 0.619279 0.0484429 # # 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 59046.1454 16.990 0.091 19.283 11.093 1.432 0.120 3.0 0.0110 629.47 5459.33 UVW2 59048.8432 17.563 0.142 18.968 11.093 0.845 0.111 3.0 0.0110 252.73 256.78 UVW2 59050.5042 18.155 0.162 19.224 11.093 0.490 0.073 3.0 0.0110 507.41 69076.33 UVW2 59052.6212 18.449 0.196 19.217 11.093 0.374 0.067 3.0 0.0110 487.73 10260.09 UVW2 59053.6744 18.756 0.300 18.937 11.093 0.282 0.078 3.0 0.0110 233.04 236.78 UVW2 59055.7424 NULL NULL 19.189 11.092 0.185 0.059 3.0 0.0110 443.45 12246.19 UVW2 59056.6454 18.692 0.235 19.190 11.093 0.299 0.065 3.0 0.0110 450.34 6190.91 UVW2 59057.4668 NULL NULL 19.242 11.093 0.152 0.054 3.0 0.0110 532.24 540.77 UVW2 59059.7298 NULL NULL 19.197 11.093 0.145 0.056 3.0 0.0110 460.40 467.77 UVW2 59060.4508 19.074 0.309 19.193 11.092 0.210 0.060 3.0 0.0110 448.59 455.78 UVW2 59066.3030 NULL NULL 19.263 11.093 0.086 0.050 3.0 0.0110 572.17 45736.95 UVW2 59067.6402 NULL NULL 19.047 11.093 0.146 0.063 3.0 0.0110 313.52 46123.90 UVW2 59071.7472 NULL NULL 19.335 11.093 0.064 0.046 3.0 0.0110 780.32 10095.99 UVW2 59074.4423 NULL NULL 19.167 11.093 0.011 0.050 3.0 0.0110 419.83 28645.51 UVW2 59076.5358 NULL NULL 19.218 11.093 0.076 0.051 3.0 0.0110 494.18 68909.30 UVW2 59078.0204 NULL NULL 19.109 11.093 0.004 0.052 3.0 0.0110 355.63 119137.23 # UVM2 59046.1489 16.638 0.134 18.387 10.560 1.216 0.150 3.0 0.0110 119.45 5240.57 UVM2 59048.8477 17.297 0.119 19.047 10.560 0.662 0.073 3.0 0.0110 397.25 403.62 UVM2 59050.5077 17.890 0.167 19.004 10.560 0.384 0.059 3.0 0.0110 363.25 68996.29 UVM2 59052.6246 18.187 0.192 19.060 10.559 0.292 0.052 3.0 0.0110 399.23 10399.34 UVM2 59053.6772 NULL NULL 18.293 10.559 0.184 0.078 3.0 0.0110 100.35 101.96 UVM2 59055.7455 18.719 0.291 18.975 10.560 0.179 0.048 3.0 0.0110 338.97 12172.89 UVM2 59056.6487 NULL NULL 18.999 10.560 0.120 0.043 3.0 0.0110 358.92 5990.39 UVM2 59057.4740 NULL NULL 19.063 10.560 0.096 0.040 3.0 0.0110 407.08 413.60 UVM2 59059.7361 NULL NULL 19.011 10.560 0.126 0.043 3.0 0.0110 362.54 368.35 UVM2 59060.4570 19.003 0.350 19.004 10.559 0.138 0.044 3.0 0.0110 352.26 357.91 UVM2 59066.3063 NULL NULL 19.371 10.560 0.038 0.029 3.0 0.0110 932.19 45597.04 UVM2 59067.6417 NULL NULL 18.782 10.560 0.098 0.049 3.0 0.0110 237.10 46083.55 UVM2 59071.7821 NULL NULL 19.304 10.560 0.070 0.032 3.0 0.0110 752.92 4778.05 UVM2 59074.4464 NULL NULL 19.275 10.560 0.041 0.031 3.0 0.0110 703.39 28952.29 UVM2 59076.5382 NULL NULL 19.309 10.560 0.035 0.030 3.0 0.0110 772.68 69007.88 UVM2 59078.0227 NULL NULL 19.227 10.560 0.022 0.031 3.0 0.0110 602.25 119202.80 # UVW1 59046.1717 16.386 0.078 18.991 11.155 2.641 0.189 3.0 0.0110 389.36 10665.62 UVW1 59048.8394 16.958 0.121 18.662 11.155 1.558 0.174 3.0 0.0110 151.34 153.77 UVW1 59050.5003 17.385 0.129 18.870 11.155 1.052 0.125 3.0 0.0110 253.47 68972.02 UVW1 59052.6172 17.945 0.181 18.852 11.155 0.628 0.104 3.0 0.0110 243.62 9935.86 UVW1 59053.6709 18.240 0.281 18.540 11.155 0.479 0.124 3.0 0.0110 115.90 117.75 UVW1 59055.7390 18.158 0.212 18.829 11.155 0.516 0.101 3.0 0.0110 221.98 12167.28 UVW1 59056.6421 18.266 0.228 18.828 11.155 0.467 0.098 3.0 0.0110 224.94 6252.43 UVW1 59057.4588 18.586 0.272 18.890 11.155 0.348 0.087 3.0 0.0110 266.50 270.77 UVW1 59059.7228 18.185 0.215 18.832 11.156 0.503 0.100 3.0 0.0110 230.09 233.78 UVW1 59060.4441 18.688 0.308 18.831 11.155 0.317 0.090 3.0 0.0110 224.17 227.76 UVW1 59066.3003 NULL NULL 18.969 11.155 0.147 0.072 3.0 0.0110 342.79 45874.73 UVW1 59067.6377 NULL NULL 18.751 11.156 0.191 0.088 3.0 0.0110 187.51 45953.62 UVW1 59071.7431 NULL NULL 19.091 11.155 0.164 0.066 3.0 0.0110 541.58 10277.47 UVW1 59074.4390 NULL NULL 18.873 11.155 0.065 0.074 3.0 0.0110 252.47 28428.00 UVW1 59076.5338 NULL NULL 18.927 11.155 0.047 0.070 3.0 0.0110 296.29 68846.34 UVW1 59078.0186 NULL NULL 18.863 11.156 0.121 0.077 3.0 0.0110 250.64 119105.71 # U 59046.1420 15.879 0.070 18.831 12.078 9.644 0.624 3.0 0.0110 157.04 5219.45 U 59048.8407 16.323 0.102 18.458 12.079 6.412 0.602 3.0 0.0110 49.98 50.78 U 59050.5015 16.713 0.094 18.806 12.079 4.476 0.388 3.0 0.0110 126.53 68900.18 U 59052.6183 17.114 0.113 18.803 12.080 3.092 0.323 3.0 0.0110 121.61 9934.04 U 59053.6719 17.258 0.151 18.542 12.080 2.710 0.376 3.0 0.0110 57.85 58.77 U 59055.7401 17.470 0.141 18.779 12.080 2.228 0.289 3.0 0.0110 110.77 12100.96 U 59056.6433 17.536 0.145 18.787 12.079 2.097 0.281 3.0 0.0110 112.74 6142.69 U 59057.4612 17.729 0.157 18.836 12.079 1.756 0.254 3.0 0.0110 132.65 134.78 U 59059.7249 17.763 0.166 18.794 12.080 1.702 0.260 3.0 0.0110 114.92 116.76 U 59060.4461 17.849 0.177 18.787 12.080 1.572 0.256 3.0 0.0110 111.98 113.77 U 59066.3015 18.321 0.244 18.794 12.080 1.018 0.229 3.0 0.0110 113.45 45723.25 U 59067.6384 18.286 0.284 18.580 12.080 1.051 0.275 3.0 0.0110 62.48 45925.86 U 59071.7449 18.682 0.289 18.914 12.080 0.730 0.194 3.0 0.0110 180.40 10053.25 U 59074.4399 NULL NULL 18.701 12.080 0.672 0.230 3.0 0.0110 84.18 28387.32 U 59076.5344 NULL NULL 18.753 12.080 0.643 0.219 3.0 0.0110 99.47 68799.38 U 59078.0192 NULL NULL 18.638 12.079 0.723 0.244 3.0 0.0110 70.19 119049.81 # B 59046.1430 16.994 0.087 19.150 12.886 7.021 0.560 3.0 0.0110 157.04 5219.34 B 59048.8413 17.315 0.129 18.822 12.886 5.225 0.620 3.0 0.0110 49.97 50.77 B 59050.5023 17.660 0.125 19.120 12.887 3.800 0.438 3.0 0.0110 126.51 68895.28 B 59052.6190 17.966 0.152 19.115 12.888 2.867 0.402 3.0 0.0110 121.61 9974.03 B 59053.6727 18.058 0.194 18.890 12.888 2.635 0.471 3.0 0.0110 57.85 58.77 B 59055.7408 18.363 0.203 19.099 12.888 1.989 0.372 3.0 0.0110 110.77 12094.13 B 59056.6440 18.527 0.228 19.103 12.888 1.711 0.360 3.0 0.0110 112.74 6107.86 B 59057.4628 18.642 0.240 19.147 12.888 1.539 0.341 3.0 0.0110 132.65 134.78 B 59059.7263 18.855 0.292 19.112 12.888 1.264 0.340 3.0 0.0110 114.92 116.76 B 59060.4475 18.662 0.253 19.105 12.887 1.511 0.351 3.0 0.0110 111.98 113.77 B 59066.3020 NULL NULL 19.114 12.889 0.368 0.306 3.0 0.0110 113.49 45687.05 B 59067.6388 NULL NULL 18.918 12.890 1.010 0.386 3.0 0.0110 62.55 45943.99 B 59071.7456 NULL NULL 19.216 12.889 0.385 0.283 3.0 0.0110 180.44 10002.24 B 59074.4405 NULL NULL 19.033 12.887 0.468 0.330 3.0 0.0110 84.20 28409.27 B 59076.5348 NULL NULL 19.068 12.892 0.443 0.321 3.0 0.0110 99.51 68801.59 B 59078.0195 NULL NULL 18.973 12.888 0.182 0.333 3.0 0.0110 70.21 119046.90 # V 59046.1478 16.913 0.127 18.277 11.636 2.459 0.287 3.0 0.0110 157.04 5219.39 V 59048.8450 17.253 0.219 17.899 11.636 1.798 0.363 3.0 0.0110 49.97 50.77 V 59050.5061 17.538 0.201 18.229 11.636 1.383 0.256 3.0 0.0110 126.52 68870.20 V 59052.6227 NULL NULL 18.222 11.637 0.687 0.230 3.0 0.0110 121.61 10174.39 V 59053.6762 17.919 0.334 17.969 11.637 0.974 0.299 3.0 0.0110 57.86 58.78 V 59055.7441 NULL NULL 18.200 11.636 0.511 0.227 3.0 0.0110 110.77 12060.44 V 59056.6474 18.114 0.320 18.200 11.637 0.813 0.239 3.0 0.0110 112.75 5931.54 V 59057.4708 NULL NULL 18.244 11.637 0.660 0.224 3.0 0.0110 132.64 134.77 V 59059.7332 NULL NULL 18.208 11.636 0.585 0.228 3.0 0.0110 114.94 116.78 V 59060.4542 NULL NULL 18.202 11.636 0.498 0.226 3.0 0.0110 111.98 113.77 V 59066.3048 NULL NULL 18.205 11.636 0.458 0.224 3.0 0.0110 113.51 45470.54 V 59067.6411 NULL NULL 17.934 11.648 0.149 0.268 3.0 0.0110 62.56 46049.11 V 59071.7799 NULL NULL 18.154 11.636 0.267 0.225 3.0 0.0110 95.02 4531.74 V 59074.4436 NULL NULL 18.112 11.636 0.516 0.244 3.0 0.0110 84.17 28541.66 V 59076.5367 NULL NULL 18.162 11.638 0.190 0.221 3.0 0.0110 99.50 68813.24 V 59078.0213 NULL NULL 18.049 11.636 0.270 0.245 3.0 0.0110 70.18 119030.96 #