TITLE: GCN CIRCULAR NUMBER: 21009 SUBJECT: LIGO/Virgo G277583: DLT40 follow-up observation DATE: 17/04/11 19:26:39 GMT FROM: Sheng Yang at UC Davis 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 _______________________________ Sheng Yang