GCN Circular 21116

Sheng Yang (INAF-OAPd, UC Davis), Stefano Valenti(UC Davis), David Sand (TTU), Leonardo Tartaglia (TTU, UC Davis), Enrico Cappellaro(INAF-OAPd), Dan Reichart, Josh Haislip (UNC) report on behalf of the Gravitational Wave Follow-Up by DLT40.

We report the observation of 58 galaxies within the LVC error region for the GW trigger G284239 using the GW LIB localization map.We selected 85 galaxies from the GWGC catalogue within 95.0% of the trigger error region, within a distance of 40.0 Mpc, brighter that -17.5 mag and at a Declination < 20 degree. 58 of those galaxies have been observed using the Prompt 5 telescope and are part of the ongoing DLT40 search. They represent the 3.3% of all galaxies within 40.0 Mpc in the Glade catalogue within the LVC error region for the GW trigger and contains 13.3% of all B band luminosity of those galaxies. We started to observe these sample of galaxies on 2017-5-2 and monitored them for 2 weeks after the GW trigger. No interesting transients have been identified down to a limit magnitude of 19.

Below follow the list of galaxies observed:
Name RA(J2000) DEC(J2000) Dist(Mpc) BMAG KMAG
NGC6384 263.1007 7.0603 25.94 -21.26 -24.5418
IC4837A 288.8173 -54.1325 33.42 -21.15 -24.474
NGC6788 291.7071 -54.9513 34.56 -21.09 -24.1729
NGC6181 248.0877 19.8259 33.57 -20.73 -23.9578
IC4837 288.808 -54.6659 33.42 -20.72 -20.383
NGC6368 261.7978 11.5436 30.48 -20.62 -23.2311
NGC7049 319.7449 -48.5632 29.92 -20.61 -25.1338
NGC6887 304.3219 -52.7968 30.06 -20.49 -23.5189
NGC6868 302.4754 -48.3796 26.79 -20.45 -24.8229
NGC6810 295.8931 -58.6557 23.12 -20.42 -24.1399
IC4889 296.3133 -54.3442 29.24 -20.33 -24.2199
NGC6861 301.8312 -48.3703 28.05 -20.29 -24.5317
NGC7029 317.967 -49.2838 38.37 -20.23 -24.38
IC4797 284.1237 -54.3059 28.05 -20.23 -24.1707
NGC6851 300.8932 -48.2845 36.14 -20.13 -24.0209
IC4946 305.992 -43.9953 34.67 -20.12 -23.9688
ESO183-030 284.2327 -54.5457 33.42 -20.11 -24.292
NGC7041 319.1349 -48.3636 25.7 -20.06 -23.8377
NGC6909 306.9121 -47.027 35.48 -20.04 -23.5259
IC4839 288.8919 -54.6266 35.11 -20.02 -23.4762
NGC6870 302.5452 -48.2871 33.42 -19.9 -23.673
NGC6509 269.8555 6.287 27.67 -19.81 -22.476
NGC7007 316.3662 -52.5519 34.67 -19.75 -23.7408
ESO231-017 286.1934 -47.8487 35.14 -19.62 -23.204
IC4901 298.5957 -58.7139 17.86 -19.61 -22.4144
NGC6890 304.5756 -44.8071 31.19 -19.52 -23.4431
NGC6875A 302.9827 -46.1441 29.11 -19.52 -22.3472
NGC6889 304.7221 -53.957 30.22 -19.49 -22.0095
IC1151 239.6347 17.4415 24.21 -19.38 -21.508
ESO234-049 308.8254 -49.8655 31.19 -19.33 -21.8731
UGC11093 270.4656 6.9683 21.18 -19.23 -22.2496
UGC10862 262.0374 7.4226 25.35 -19.22 -20.3179
ESO286-063 317.4682 -45.5276 31.81 -19.21 -21.9048
ESO186-062 308.5086 -52.9812 31.19 -19.1 -22.2241
IC4986 304.2982 -55.0364 23.75 -19.08 -19.9153
UGC11030 268.6407 2.8794 27.67 -19.06 -19.63
ESO340-032 306.7336 -39.6159 33.54 -18.98 -21.1668
IC4821 287.3833 -55.0173 25.0 -18.98 -21.6087
IC4817 286.5516 -56.1594 33.42 -18.96 -21.27
NGC6861D 302.0812 -48.2114 33.42 -18.9 -23.421
NGC6707 283.8415 -53.8186 33.42 -18.9 -22.969
ESO340-010 304.3582 -41.1334 39.26 -18.82 -22.1218
IC4871 293.9259 -57.5191 22.59 -18.8 -20.8786
ESO285-048 311.1676 -45.9786 28.18 -18.77 -21.3327
ESO185-027 299.0568 -56.9106 23.81 -18.73 -21.9358
NGC6902B 305.7795 -43.8686 34.67 -18.69 -20.7538
ESO236-006 320.2867 -47.5151 28.93 -18.66 -19.5207
NGC6149 246.8508 19.5972 30.57 -18.65 -22.1455
NGC6990 314.9871 -55.562 25.36 -18.57 -21.0847
ESO233-035 302.3566 -48.2848 33.97 -18.57 -22.2335
NGC7090 324.1204 -54.5576 6.28 -18.56 -20.8258
NGC6861E 302.7564 -48.6908 33.9 -18.55 -21.044
ESO235-085 319.5675 -48.5375 24.03 -18.53 -21.6278
NGC7022 317.3967 -49.3037 29.49 -18.51 -22.1184
ESO235-001 312.2578 -47.2987 33.75 -18.51 -20.2164
PGC061359 271.0942 7.2804 28.11 -18.5 -23.0103
IC4885 295.9668 -60.6517 29.92 -18.39 -21.3538
IC4888 296.2176 -54.4567 29.82 -18.29 -21.2615