TITLE: GCN CIRCULAR NUMBER: 21707 SUBJECT: LIGO/Virgo G299232: Nearby Galaxies in the Localization Volume DATE: 17/08/26 01:19:16 GMT FROM: Mansi M. Kasliwal at Caltech David O. Cook (Caltech), Angela Van Sistine (UW Milwaukee), Leo Singer (NASA/GSFC), M. M. Kasliwal (Caltech), and David Kaplan (UW Milwaukee) report on behalf of the iPTF and GROWTH collaborations We spatially cross-matched the LIGO/Virgo G299232 trigger (90% containment volume using bayestar-HLV.fits; LVC GCN 21693) with our Census of the Local Universe (CLU; Cook et al. in prep) galaxy catalog and found 17,593 galaxies. This catalog is a compilation of galaxies with existing redshifts from many sources (e.g., NED, SDSS, etc) and new galaxies from a 3PI four-filter narrow-band survey to look for redshifted Halpha emission out to 200 Mpc with the Palomar Oschin 48-inch telescope. Currently, the narrow-band survey is only calibrated inside the footprint of SDSS. Of the 17,593 galaxies in the error volume, 17,120 come from a compilation of known galaxies and 473 are new, emission-line CLU galaxy candidates derived from our Halpha survey. We list here the top 20 galaxies sorted by stellar mass (Mstar) for galaxies whose location on the sky and distance falls in the 90% volume reported by the BAYESTAR probability sky map (Singer et al. 2016). We also list the dust-corrected star formation rates (SFRs) for galaxies with GALEX FUV detections and a 'nan' for those with no detection. name_NED ra dec distmpc logsfr_fuv logmstar P ----------------------------------------- -------- -------- ------- ---------- -------- --------------- [HB89] 0241+622 41.2405 62.4685 191.43 nan 12.05 0.140963304855 LDCE 1285 271.5879 -25.4311 103.44 nan 11.91 0.800186835374 ESO 344- G 016 333.6750 -38.8064 170.09 1.540 11.72 0.886386086915 UGC 00774 18.4626 13.2719 209.58 1.593 11.69 0.528731713093 IC 0260 42.7537 46.9548 123.80 nan 11.54 0.882625900958 6dF J1741553-121157 265.4803 -12.1990 152.05 nan 11.44 0.753441530388 NGC 0326 NED01 14.5943 26.8662 208.72 -0.405 11.33 0.7901652699 NGC 6958 312.1785 -37.9975 99.86 nan 11.31 0.789778583289 2MASX J01571097+4715588 29.2956 47.2666 207.11 nan 11.30 0.281525733779 IC 1695 21.2818 8.6995 210.38 nan 11.30 0.431687269372 UGC 01400 29.0184 36.1313 77.62 nan 11.29 0.335875843118 NGC 6099 243.8982 19.4534 207.50 nan 11.28 0.714631039094 MRK 0567 19.8255 4.5781 141.83 1.304 11.26 0.572392023225 NGC 6240 NED01 253.2453 2.4010 100.61 nan 11.26 0.752082522541 SDSS J005601.73-010352.2 14.0072 -1.0645 189.66 nan 11.26 0.737619298894 2MASX J01543532+6437570 28.6470 64.6326 149.45 nan 11.26 0.593543567206 2MASX J20145535-3240004 303.7306 -32.6668 409.11 nan 11.24 0.892450247448 UGC 00959 21.1875 32.1657 173.33 0.907 11.24 0.422381064489 SDSS J162220.44+115214.9 245.5852 11.8708 215.90 nan 11.21 0.636472864491 GALEXASC J015114.07+223457.6 27.8086 22.5827 133.44 nan 11.20 0.34030312252 The SFRs are derived from GALEX all sky kron FUV magnitudes via the prescription of Murphy et al. (2011) and have been corrected for internal dust extinction using a combination of GALEX FUV and 22um ALLWISE fluxes (Hao et al. 2011). The quoted stellar masses are derived from 3.4um ALLWISE fluxes and a mass-to-light ratio of 0.5 (McGaugh & Schombert et al. 2015).