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This article has an erratum: [https://doi.org/10.1051/0004-6361/201526027e]

Table 6

Optical photometric observations of the 2014 eruption of M31N 2008-12a.

Date t − tmax JD 2 456 000.5+ Telescope and Exposure Filter SNR Photometry
(UT) (days) start end instrument time (s)
2014 Oct. 3.549 –0.151 933.549 Kiso 1.05 m 3 × 60 B ... 18.97 ± 0.14
2014 Oct. 3.822 0.122 933.822 Ondřejov 0.65 m 7 × 90 B ... 18.7 ± 0.2 c
2014 Oct. 3.878 0.178 933.875 933.880 LT IO:O 3 × 120 B 77.6 18.714 ± 0.015
2014 Oct. 3.924 0.223 933.921 933.926 LT IO:O 3 × 120 B 81.8 18.706 ± 0.015
2014 Oct. 3.980 0.280 933.978 933.983 LT IO:O 3 × 120 B 84.2 18.739 ± 0.015
2014 Oct. 4.038 0.338 934.036 934.041 LT IO:O 3 × 120 B 90.3 18.806 ± 0.014
2014 Oct. 4.083 0.384 934.081 934.086 LT IO:O 3 × 120 B 88.4 18.850 ± 0.013
2014 Oct. 4.133 0.433 934.131 934.135 LT IO:O 3 × 120 B 90.7 18.915 ± 0.015
2014 Oct. 4.179 0.480 934.175 934.184 MLO 1.0 m 5 × 120 B ... 18.95 ± 0.04 d
2014 Oct. 4.181 0.481 934.179 934.183 LT IO:O 3 × 120 B 84.8 18.997 ± 0.014
2014 Oct. 4.898 1.198 934.896 934.900 LT IO:O 3 × 120 B 39.2 19.871 ± 0.029
2014 Oct. 4.943 1.243 934.941 934.945 LT IO:O 3 × 120 B 41.8 19.991 ± 0.028
2014 Oct. 5.013 1.312 935.010 935.015 LT IO:O 3 × 120 B 38.7 20.071 ± 0.029
2014 Oct. 5.090 1.390 935.088 935.092 LT IO:O 3 × 120 B 39.3 20.141 ± 0.029
2014 Oct. 5.163 1.464 935.161 935.166 LT IO:O 3 × 120 B 46.2 20.157 ± 0.024
2014 Oct. 5.875 2.175 935.871 935.878 LT IO:O 3 × 180 B 11.8 20.863 ± 0.093
2014 Oct. 5.946 2.246 935.940 935.951 LT IO:O 3 × 300 B 22.7 20.834 ± 0.049
2014 Oct. 6.020 2.320 936.015 936.025 LT IO:O 3 × 300 B 22.2 20.827 ± 0.049
2014 Oct. 6.096 2.395 936.090 936.101 LT IO:O 3 × 300 B 22.0 20.866 ± 0.050
2014 Oct. 6.168 2.468 936.163 936.174 LT IO:O 3 × 300 B 16.4 20.891 ± 0.066
2014 Oct. 6.875 3.175 936.870 936.881 LT IO:O 3 × 300 B 10.7 20.945 ± 0.102
2014 Oct. 7.016 3.316 937.011 937.022 LT IO:O 3 × 300 B 25.2 20.792 ± 0.044
2014 Oct. 7.181 3.481 937.176 937.186 LT IO:O 3 × 300 B 18.4 21.114 ± 0.059
2014 Oct. 7.930 4.231 937.925 937.936 LT IO:O 3 × 300 B 7.1 21.510 ± 0.153
2014 Oct. 8.824 5.124 938.819 938.829 LT IO:O 3 × 300 B – > 20.3
2014 Oct. 9.049 5.349 939.044 939.054 LT IO:O 3 × 300 B 6.3 21.320 ± 0.174
2014 Oct. 9.823 6.123 939.818 939.828 LT IO:O 3 × 300 B 8.9 21.293 ± 0.122
2014 Oct. 10.053 6.353 940.047 940.058 LT IO:O 3 × 300 B – > 21.2
2014 Oct. 11.814 8.114 941.809 941.820 LT IO:O 3 × 300 B – > 19.4
2014 Oct. 3.299 –0.401 933.299 iTelescope T24 3 × 180 V ... 18.71 ± 0.14
2014 Oct. 3.536 –0.164 933.536 Kiso 1.05 m 3 × 60 V ... 18.68 ± 0.10
2014 Oct. 3.815 0.115 933.815 Ondřejov 0.65 m 7 × 90 V ... 18.5 ± 0.1 c
2014 Oct. 3.882 0.183 933.880 933.885 LT IO:O 3 × 120 V 79.1 18.592 ± 0.015
2014 Oct. 3.928 0.228 933.926 933.931 LT IO:O 3 × 120 V 88.8 18.583 ± 0.014
2014 Oct. 3.986 0.285 933.983 933.988 LT IO:O 3 × 120 V 91.9 18.599 ± 0.014
2014 Oct. 4.043 0.343 934.041 934.046 LT IO:O 3 × 120 V 93.4 18.668 ± 0.014
2014 Oct. 4.089 0.388 934.086 934.091 LT IO:O 3 × 120 V 96.9 18.704 ± 0.013
2014 Oct. 4.138 0.438 934.136 934.140 LT IO:O 3 × 120 V 98.3 18.769 ± 0.013
2014 Oct. 4.158 0.458 934.152 934.163 MLO 1.0 m 5 × 120 V ... 18.78 ± 0.04 d
2014 Oct. 4.177 0.477 934.177 iTelescope T11 5 × 180 V ... 18.74 ± 0.30
2014 Oct. 4.186 0.486 934.184 934.188 LT IO:O 3 × 120 V 92.7 18.813 ± 0.013
2014 Oct. 4.214 0.514 934.214 iTelescope T24 3 × 180 V ... 18.74 ± 0.09
2014 Oct. 4.903 1.203 934.901 934.905 LT IO:O 3 × 120 V 39.6 19.856 ± 0.028
2014 Oct. 4.948 1.248 934.946 934.950 LT IO:O 3 × 120 V 39.3 19.894 ± 0.028
2014 Oct. 5.017 1.317 935.015 935.020 LT IO:O 3 × 120 V 34.4 19.976 ± 0.032
2014 Oct. 5.095 1.395 935.093 935.097 LT IO:O 3 × 120 V 37.2 19.983 ± 0.030
2014 Oct. 5.168 1.469 935.166 935.171 LT IO:O 3 × 120 V 43.5 20.102 ± 0.026
2014 Oct. 5.881 2.182 935.878 935.885 LT IO:O 3 × 180 V 10.8 21.089 ± 0.101
2014 Oct. 5.957 2.257 935.952 935.963 LT IO:O 3 × 300 V 19.2 20.945 ± 0.057
2014 Oct. 6.032 2.331 936.026 936.037 LT IO:O 3 × 300 V 17.0 21.102 ± 0.064
2014 Oct. 6.106 2.407 936.101 936.112 LT IO:O 3 × 300 V 15.7 21.010 ± 0.069
2014 Oct. 6.179 2.480 936.174 936.185 LT IO:O 3 × 300 V 12.6 21.043 ± 0.087
2014 Oct. 6.419 2.719 936.419 Kiso 1.05 m 3 × 60 V ... > 18.8
2014 Oct. 6.887 3.187 936.881 936.892 LT IO:O 3 × 300 V 15.0 20.771 ± 0.073
2014 Oct. 7.028 3.328 937.022 937.033 LT IO:O 3 × 300 V 16.4 20.865 ± 0.067
2014 Oct. 7.192 3.492 937.187 937.198 LT IO:O 3 × 300 V 11.7 21.350 ± 0.093
2014 Oct. 7.942 4.242 937.936 937.947 LT IO:O 3 × 300 V – > 20.6
2014 Oct. 8.836 5.135 938.830 938.841 LT IO:O 3 × 300 V 5.2 21.764 ± 0.210
2014 Oct. 9.061 5.360 939.055 939.066 LT IO:O 3 × 300 V – > 20.1
2014 Oct. 9.834 6.134 939.829 939.840 LT IO:O 3 × 300 V 13.6 21.214 ± 0.081
2014 Oct. 10.064 6.364 940.059 940.070 LT IO:O 3 × 300 V – > 21.1
2014 Oct. 11.826 8.126 941.820 941.831 LT IO:O 3 × 300 V 5.9 22.334 ± 0.183
2014 Oct. 3.738 0.038 933.738 Ondřejov 0.65 m 10 × 90 R ... 18.2 ± 0.1 c
2014 Oct. 3.807 0.107 933.807 Ondřejov 0.65 m 7 × 90 R ... 18.27 ± 0.09 c
2014 Oct. 3.915 0.215 933.915 Ondřejov 0.65 m 7 × 90 R ... 18.32 ± 0.08 c
2014 Oct. 4.083 0.383 934.083 Ondřejov 0.65 m 12 × 90 R ... 18.38 ± 0.07 c
2014 Oct. 4.169 0.469 934.169 Ondřejov 0.65 m 7 × 90 R ... 18.4 ± 0.1 c
2014 Oct. 4.169 0.469 934.164 934.174 MLO 1.0 m 5 × 120 R ... 18.48 ± 0.03 d
2014 Oct. 4.929 1.229 934.929 Ondřejov 0.65 m 13 × 90 R ... 19.4 ± 0.2 c
2014 Oct. 5.935 2.235 935.935 Ondřejov 0.65 m 15 × 90 R ... 20.2 ± 0.3 c
2014 Oct. 6.161 2.461 936.161 Ondřejov 0.65 m 20 × 90 R ... 20.1 ± 0.3 c
2014 Oct. 10.206 6.506 940.206 Danish 1.54 m 3 × 90 R – > 19.7
2014 Oct. 12.193 8.493 942.193 Danish 1.54 m 8 × 90 R – > 21.1
2014 Oct. 3.750 0.050 933.750 Ondřejov 0.65 m 10 × 90 I ... 18.2 ± 0.1 c
2014 Oct. 4.188 0.489 934.184 934.193 MLO 1.0 m 5 × 120 I ... 18.51 ± 0.04 d
2014 Oct. 2.468 –1.232 932.468 iPTF ... g ... > 19.5 b
2014 Aug. 30.984 –33.717 868.057 931.910 LT IO:O 50 × 60 r ′ – > 21.2
2014 Oct. 1.909 –1.790 931.909 931.910 LT IO:O 60 r ′ – > 20.4 a
2014 Oct. 2.904 –0.796 932.904 932.904 LT IO:O 60 r ′ 52.4 18.862 ± 0.022 a
2014 Oct. 3.888 0.188 933.885 933.890 LT IO:O 3 × 120 r ′ 104.1 18.466 ± 0.012 a
2014 Oct. 3.934 0.233 933.931 933.936 LT IO:O 3 × 120 r ′ 120.5 18.498 ± 0.010
2014 Oct. 3.991 0.290 933.988 933.993 LT IO:O 3 × 120 r ′ 118.5 18.498 ± 0.010
2014 Oct. 4.049 0.348 934.046 934.051 LT IO:O 3 × 120 r ′ 112.5 18.523 ± 0.011
2014 Oct. 4.093 0.393 934.091 934.096 LT IO:O 3 × 120 r ′ 117.9 18.560 ± 0.011
2014 Oct. 4.143 0.443 934.141 934.145 LT IO:O 3 × 120 r ′ 126.7 18.596 ± 0.010
2014 Oct. 4.191 0.491 934.189 934.193 LT IO:O 3 × 120 r ′ 116.9 18.619 ± 0.011
2014 Oct. 4.908 1.208 934.905 934.910 LT IO:O 3 × 120 r ′ 61.2 19.466 ± 0.019
2014 Oct. 4.953 1.253 934.951 934.955 LT IO:O 3 × 120 r ′ 64.0 19.453 ± 0.018
2014 Oct. 5.023 1.322 935.020 935.025 LT IO:O 3 × 120 r ′ 57.5 19.609 ± 0.019
2014 Oct. 5.100 1.400 935.098 935.102 LT IO:O 3 × 120 r ′ 53.7 19.672 ± 0.021
2014 Oct. 5.174 1.474 935.171 935.176 LT IO:O 3 × 120 r ′ 55.8 19.673 ± 0.020
2014 Oct. 5.889 2.189 935.885 935.892 LT IO:O 3 × 180 r ′ 21.6 20.427 ± 0.051
2014 Oct. 5.968 2.268 935.963 935.974 LT IO:O 3 × 300 r ′ 26.7 20.432 ± 0.047
2014 Oct. 6.043 2.342 936.037 936.048 LT IO:O 3 × 300 r ′ 27.8 20.483 ± 0.042
2014 Oct. 6.118 2.418 936.112 936.123 LT IO:O 3 × 300 r ′ 27.5 20.547 ± 0.042
2014 Oct. 6.190 2.491 936.185 936.196 LT IO:O 3 × 300 r ′ 23.4 20.602 ± 0.048
2014 Oct. 6.898 3.198 936.892 936.903 LT IO:O 3 × 300 r ′ 21.7 20.475 ± 0.054
2014 Oct. 7.038 3.339 937.033 937.044 LT IO:O 3 × 300 r ′ 17.2 20.613 ± 0.067
2014 Oct. 7.203 3.503 937.198 937.209 LT IO:O 3 × 300 r ′ 14.6 20.890 ± 0.077
2014 Oct. 7.953 4.253 937.948 937.959 LT IO:O 3 × 300 r ′ 8.3 21.183 ± 0.131
2014 Oct. 8.846 5.146 938.841 938.852 LT IO:O 3 × 300 r ′ 5.6 21.708 ± 0.196
2014 Oct. 9.846 6.145 939.840 939.851 LT IO:O 3 × 300 r ′ 12.6 21.254 ± 0.093
2014 Oct. 10.076 6.375 940.070 940.081 LT IO:O 3 × 300 r ′ 5.5 22.086 ± 0.199
2014 Oct. 11.837 8.137 941.832 941.842 LT IO:O 3 × 300 r ′ – > 21.2
2014 Nov. 11.892 39.192 968.909 976.875 LT IO:O 9 × 60 r ′ – > 21.0
2014 Oct. 3.892 0.192 933.890 933.895 LT IO:O 3 × 120 i ′ 65.8 18.614 ± 0.019
2014 Oct. 3.938 0.238 933.936 933.941 LT IO:O 3 × 120 i ′ 82.6 18.601 ± 0.015
2014 Oct. 3.995 0.295 933.993 933.998 LT IO:O 3 × 120 i ′ 79.5 18.614 ± 0.016
2014 Oct. 4.053 0.353 934.051 934.056 LT IO:O 3 × 120 i ′ 82.4 18.623 ± 0.016
2014 Oct. 4.099 0.398 934.096 934.101 LT IO:O 3 × 120 i ′ 80.1 18.663 ± 0.015
2014 Oct. 4.148 0.448 934.146 934.150 LT IO:O 3 × 120 i ′ 84.0 18.693 ± 0.014
2014 Oct. 4.196 0.496 934.194 934.198 LT IO:O 3 × 120 i ′ 78.8 18.664 ± 0.015
2014 Oct. 4.912 1.213 934.910 934.915 LT IO:O 3 × 120 i ′ 43.8 19.456 ± 0.026
2014 Oct. 4.958 1.258 934.956 934.960 LT IO:O 3 × 120 i ′ 37.1 19.489 ± 0.030
2014 Oct. 5.027 1.327 935.025 935.030 LT IO:O 3 × 120 i ′ 40.5 19.567 ± 0.028
2014 Oct. 5.105 1.405 935.103 935.107 LT IO:O 3 × 120 i ′ 38.8 19.624 ± 0.029
2014 Oct. 5.178 1.479 935.176 935.181 LT IO:O 3 × 120 i ′ 35.9 19.675 ± 0.031
2014 Oct. 5.896 2.196 935.892 935.899 LT IO:O 3 × 180 i ′ 14.4 20.522 ± 0.076
2014 Oct. 5.980 2.280 935.974 935.985 LT IO:O 3 × 300 i ′ 17.5 20.475 ± 0.062
2014 Oct. 6.053 2.354 936.048 936.059 LT IO:O 3 × 300 i ′ 16.7 20.596 ± 0.065
2014 Oct. 6.130 2.429 936.124 936.135 LT IO:O 3 × 300 i ′ 16.0 20.651 ± 0.068
2014 Oct. 6.202 2.502 936.197 936.207 LT IO:O 3 × 300 i ′ 13.8 20.676 ± 0.079
2014 Oct. 6.909 3.209 936.904 936.914 LT IO:O 3 × 300 i ′ 15.9 20.708 ± 0.069
2014 Oct. 7.050 3.350 937.045 937.055 LT IO:O 3 × 300 i ′ 10.3 20.766 ± 0.106
2014 Oct. 7.215 3.515 937.209 937.220 LT IO:O 3 × 300 i ′ 8.1 21.137 ± 0.135
2014 Oct. 7.965 4.264 937.959 937.970 LT IO:O 3 × 300 i ′ 5.5 21.655 ± 0.198
2014 Oct. 8.858 5.158 938.852 938.863 LT IO:O 3 × 300 i ′ – > 20.1
2014 Oct. 9.856 6.157 939.851 939.862 LT IO:O 3 × 300 i ′ 5.9 21.464 ± 0.186
2014 Oct. 10.087 6.387 940.081 940.092 LT IO:O 3 × 300 i ′ 10.9 20.806 ± 0.099
2014 Oct. 11.849 8.148 941.843 941.854 LT IO:O 3 × 300 i ′ 11.1 20.952 ± 0.098
2014 Jul. 30.139 –65.561 868.116 868.162 LT IO:O 20 × 1200 Hα – > 20.8
2014 Oct. 5.902 2.203 935.899 935.906 LT IO:O 3 × 180 Hα 30.5 18.882 ± 0.041
2014 Oct. 5.990 2.291 935.985 935.996 LT IO:O 3 × 300 Hα 40.7 18.914 ± 0.034
2014 Oct. 6.065 2.365 936.060 936.070 LT IO:O 3 × 300 Hα 36.5 18.922 ± 0.036
2014 Oct. 6.140 2.440 936.135 936.146 LT IO:O 3 × 300 Hα 36.1 19.012 ± 0.036
2014 Oct. 6.214 2.513 936.208 936.219 LT IO:O 3 × 300 Hα 36.3 19.043 ± 0.035
2014 Oct. 6.920 3.220 936.915 936.926 LT IO:O 3 × 300 Hα 32.8 19.098 ± 0.039
2014 Oct. 7.062 3.361 937.056 937.067 LT IO:O 3 × 300 Hα 27.8 19.202 ± 0.044
2014 Oct. 7.226 3.526 937.221 937.231 LT IO:O 3 × 300 Hα 17.5 19.459 ± 0.066
2014 Oct. 7.976 4.276 937.970 937.981 LT IO:O 3 × 300 Hα 13.1 19.797 ± 0.085
2014 Oct. 8.869 5.169 938.863 938.874 LT IO:O 3 × 300 Hα 9.3 20.200 ± 0.119
2014 Oct. 9.094 5.394 939.089 939.099 LT IO:O 3 × 300 Hα – > 16.9
2014 Oct. 9.868 6.168 939.863 939.873 LT IO:O 3 × 300 Hα 8.3 20.658 ± 0.133
2014 Oct. 10.097 6.398 940.092 940.103 LT IO:O 3 × 300 Hα 7.3 20.857 ± 0.150
2014 Oct. 11.860 8.159 941.854 941.865 LT IO:O 3 × 300 Hα – > 20.4
2014 Oct. 14.955 11.254 944.949 944.960 LT IO:O 3 × 300 Hα – > 20.6
2014 Oct. 15.947 12.247 945.942 945.953 LT IO:O 3 × 300 Hα – > 16.9
2014 Oct. 16.930 13.230 946.925 946.936 LT IO:O 3 × 300 Hα – > 20.5
2014 Oct. 18.026 14.326 948.021 948.031 LT IO:O 3 × 300 Hα – > 20.8
2014 Oct. 29.978 26.278 959.973 959.984 LT IO:O 3 × 300 Hα – > 19.8
2014 Oct. 31.953 28.253 961.948 961.959 LT IO:O 3 × 300 Hα – > 20.0
2014 Nov. 4.106 31.405 965.100 965.111 LT IO:O 3 × 300 Hα – > 19.8
2014 Nov. 5.990 33.290 966.985 966.996 LT IO:O 3 × 300 Hα – > 19.8
2014 Nov. 6.933 34.234 967.928 967.939 LT IO:O 3 × 300 Hα – > 20.0

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