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Table A.1

Secondary standard stars used to calibrate the optical–NIR afterglow measurements.

RA/Dec (deg) RA/Dec (hms) g r i z J H Ks
(2000.0) (2000.0) (mag) (mag) (mag) (mag) (mag) (mag) (mag)
76.22154 –6.41494 05:04:53.17 –06:24:53.8 16.838 ± 0.001 15.947 ± 0.001 15.664 ± 0.001 15.440 ± 0.001 14.437 ± 0.002 14.000 ± 0.002 13.860 ± 0.009
76.23341 –6.42239 05:04:56.02 –06:25:20.6 15.289 ± 0.001 14.961 ± 0.001 14.475 ± 0.001 14.325 ± 0.001 13.375 ± 0.001 13.022 ± 0.002 12.860 ± 0.004
76.18746 –6.43186 05:04:44.99 –06:25:54.7 15.155 ± 0.001 14.914 ± 0.001 14.441 ± 0.001 14.308 ± 0.001 13.374 ± 0.001 13.023 ± 0.002 13.047 ± 0.004
76.18821 –6.43417 05:04:45.17 –06:26:03.0 18.943 ± 0.009 18.278 ± 0.004 18.046 ± 0.005 17.858 ± 0.005 16.910 ± 0.020 16.439 ± 0.027 16.338 ± 0.089
76.22938 –6.43628 05:04:55.05 –06:26:10.6 16.412 ± 0.001 15.793 ± 0.001 15.512 ± 0.001 15.323 ± 0.001 14.381 ± 0.002 13.936 ± 0.002 13.853 ± 0.009
76.20600 –6.44189 05:04:49.44 –06:26:30.8 19.557 ± 0.014 17.987 ± 0.003 17.294 ± 0.003 16.894 ± 0.002 15.656 ± 0.005 14.906 ± 0.007 14.848 ± 0.023
76.20441 –6.44311 05:04:49.06 –06:26:35.2 18.429 ± 0.005 16.989 ± 0.001 16.419 ± 0.001 16.063 ± 0.001 14.871 ± 0.004 14.159 ± 0.004 14.115 ± 0.012
76.24538 –6.44383 05:04:58.89 –06:26:37.8 18.927 ± 0.007 17.926 ± 0.003 17.539 ± 0.003 17.282 ± 0.003 16.177 ± 0.007 15.552 ± 0.009 15.483 ± 0.037
76.24888 –6.44475 05:04:59.73 –06:26:41.1 18.823 ± 0.007 17.953 ± 0.003 17.592 ± 0.003 17.350 ± 0.003 16.287 ± 0.009 15.775 ± 0.012 15.698 ± 0.046
76.24046 –6.44611 05:04:57.71 –06:26:46.0 18.042 ± 0.003 17.457 ± 0.002 17.242 ± 0.002 17.068 ± 0.002 16.179 ± 0.007 15.785 ± 0.012 15.733 ± 0.046
76.24809 –6.44664 05:04:59.54 –06:26:47.9 18.253 ± 0.004 17.550 ± 0.002 17.278 ± 0.002 17.084 ± 0.003 16.097 ± 0.007 15.634 ± 0.011 15.586 ± 0.039
76.24358 –6.45283 05:04:58.46 –06:27:10.2 16.975 ± 0.001 16.058 ± 0.001 15.684 ± 0.001 15.422 ± 0.001 14.353 ± 0.002 13.896 ± 0.002 13.711 ± 0.007
76.20421 –6.45503 05:04:49.01 –06:27:18.1 16.637 ± 0.001 16.080 ± 0.001 15.909 ± 0.001 15.760 ± 0.001 14.888 ± 0.002 14.595 ± 0.005 14.589 ± 0.014
76.24854 –6.45628 05:04:59.65 –06:27:22.6 17.206 ± 0.002 16.637 ± 0.001 16.419 ± 0.001 16.259 ± 0.001 15.334 ± 0.004 15.057 ± 0.007 14.938 ± 0.018
76.24492 –6.45639 05:04:58.78 –06:27:23.0 19.816 ± 0.017 18.618 ± 0.005 18.125 ± 0.005 17.828 ± 0.005 16.660 ± 0.014 16.090 ± 0.018
76.20492 –6.45661 05:04:49.18 –06:27:23.8 17.422 ± 0.002 16.985 ± 0.001 16.840 ± 0.002 16.710 ± 0.002 15.832 ± 0.007 15.538 ± 0.011 15.668 ± 0.039
76.23579 –6.46542 05:04:56.59 –06:27:55.5 17.697 ± 0.002 16.485 ± 0.001 16.035 ± 0.001 15.720 ± 0.001 14.555 ± 0.002 13.993 ± 0.002 13.858 ± 0.007
76.20871 –6.46989 05:04:50.09 –06:28:11.6 17.155 ± 0.002 15.646 ± 0.001 14.865 ± 0.001 14.477 ± 0.001 13.231 ± 0.001 12.624 ± 0.001 12.455 ± 0.002
76.22787 –6.47075 05:04:54.69 –06:28:14.7 19.456 ± 0.014 17.722 ± 0.002 16.879 ± 0.002 16.392 ± 0.001 15.037 ± 0.004 14.370 ± 0.004 14.142 ± 0.009
76.25004 –6.47411 05:05:00.01 –06:28:26.8 14.953 ± 0.001 14.683 ± 0.001 14.181 ± 0.001 13.959 ± 0.001 12.881 ± 0.001 12.503 ± 0.001 12.362 ± 0.002
76.21046 –6.48039 05:04:50.51 –06:28:49.4 20.958 ± 0.052 19.300 ± 0.010 18.445 ± 0.007 17.950 ± 0.005 16.676 ± 0.012 15.973 ± 0.014 15.843 ± 0.043
76.20200 –6.48617 05:04:48.48 –06:29:10.2 20.425 ± 0.035 18.816 ± 0.007 17.941 ± 0.005 17.449 ± 0.004 16.118 ± 0.007 15.430 ± 0.009 15.310 ± 0.027

Notes.The griz′ magnitudes are in the AB system, JHKs in Vega.

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