GCN Circular 21009

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 55 galaxies within the LVC error region for the GW trigger G277583 using the 'bayestar' GW localization map. We selected 112 galaxies from the GWGC catalogue within 80.0% of the trigger error region, within a distance of 40.0 Mpc, brighter that -17.5 mag and at a Declination < 20 degree. 55 of those galaxies have been observed using the Prompt 5 telescope and are part of the ongoing DLT40 search. They represent the 2.1% of all galaxies within 40.0 Mpc in the Glade catalogue within the LVC error region for the GW trigger and contains 4.5% of all B band luminosity of those galaxies. We started to observe this sample of galaxies on 2017-3-13 and monitored them for 2 weeks after the GW trigger. No interesting transients have been identified down to a limit magnitude of 19.5 mag.

Below follow the list of galaxies observed:
Name RA(J2000) DEC(J2000) Dist(Mpc) BMAG KMAG
ESO380-006 183.8926 -35.6298 38.93 -21.31 -24.7914
NGC2339 107.0856 18.7803 37.84 -21.21 -24.3848
NGC1954 83.2014 -14.0628 38.02 -20.93 -23.7991
IC2977 178.8111 -37.6963 39.01 -20.82 -23.8369
NGC6181 248.0877 19.8259 33.57 -20.73 -23.9578
NGC4373A 186.4071 -39.3195 37.33 -20.63 -24.0563
NGC4444 187.1515 -43.2618 36.98 -20.63 -23.4348
NGC5962 234.132 16.6078 30.2 -20.55 -23.867
NGC4112 181.7896 -40.208 34.67 -20.54 -23.4958
NGC4219 184.1136 -43.3244 20.99 -20.51 -23.5181
NGC1784 76.3629 -11.8714 30.48 -20.5 -23.9051
ESO320-031 178.5285 -39.8676 38.18 -20.45 -24.8702
IC3370 186.9046 -39.3379 26.79 -20.37 -24.2819
ESO380-019 185.5093 -35.7928 38.02 -20.37 -24.2441
ESO321-025 185.4292 -39.7694 29.38 -20.32 -22.5763
NGC1832 78.0136 -15.6878 25.12 -20.32 -23.6121
NGC6118 245.4526 -2.2833 20.99 -20.21 -22.9071
PGC016894 77.9203 -14.7895 27.42 -20.19 -22.0013
ESO321-016 183.8614 -38.144 38.02 -20.15 -21.9751
NGC5970 234.6249 12.1862 26.06 -20.13 -23.2639
ESO321-021 185.0676 -40.3908 39.65 -20.07 -22.6372
ESO322-027 188.6788 -40.3005 39.54 -20.03 -23.2642
UGC03691 107.0052 15.1783 28.84 -20.0 -21.988
UGC10288 243.6042 -0.2079 32.96 -19.99 -23.1989
NGC6010 238.5796 0.543 25.35 -19.91 -23.0859
NGC1924 82.0083 -5.3106 28.84 -19.83 -22.959
ESO321-018 183.9762 -38.0935 38.65 -19.78 -19.5997
IC2098 72.6844 -5.4185 32.36 -19.77 -22.352
ESO321-019 184.2678 -39.0508 37.64 -19.77 -22.8222
NGC6012 238.5579 14.6011 25.83 -19.76 -22.5206
ESO321-005 181.4475 -38.8539 36.46 -19.75 -22.1991
UGC03457 95.4604 0.3661 33.42 -19.66 -24.324
ESO321-010 182.9254 -38.5485 38.02 -19.66 -22.7921
NGC1666 72.1369 -6.5701 33.08 -19.63 -23.1598
NGC6106 244.6957 7.4094 24.66 -19.6 -22.341
UGC03258 77.6793 0.4085 35.13 -19.59 -22.3694
UGC09977 235.4983 0.7128 31.33 -19.48 -21.8758
ESO595-014 301.9053 -21.1252 29.92 -19.48 -22.3808
NGC6063 241.804 7.9789 37.5 -19.48 -22.3202
NGC3882 176.5266 -56.3909 23.12 -19.47 -23.7099
NGC6014 238.9891 5.9318 31.19 -19.42 -22.6711
ESO322-020 187.3036 -40.6922 39.58 -19.39 -20.4714
IC1151 239.6347 17.4415 24.21 -19.38 -21.508
ESO460-026 295.7482 -27.4192 18.11 -19.38 -21.9636
NGC5951 233.4294 15.0073 25.94 -19.37 -22.0178
NGC5956 233.7445 11.7501 26.28 -19.37 -22.2251
ESO267-016 181.5949 -44.4484 39.26 -19.36 -22.3008
PGC016917 78.0954 -14.3597 29.78 -19.36 -20.5076
ESO554-002 82.2814 -19.9339 36.21 -19.32 -20.3021
NGC1665 72.0711 -5.4276 33.1 -19.32 -23.3421
UGC10041 237.2556 5.1887 35.81 -19.27 -19.429
ESO320-035 179.1936 -38.1925 27.04 -19.22 -21.871
NGC1843 78.5256 -10.6268 29.92 -19.22 -22.6698
NGC1681 72.9586 -5.8033 32.36 -19.2 -22.149
PGC017323 82.0588 -16.1243 25.35 -19.19 -20.8399
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Sheng Yang