TITLE: GCN CIRCULAR NUMBER: 21535 SUBJECT: LIGO/Virgo G298048: Nearby Galaxies in the Localization Volume using the updated sky map computed using LALInference DATE: 17/08/18 02:48:50 GMT FROM: Mansi M. Kasliwal at Caltech David O. Cook (Caltech), Angela Van Sistine (UW Milwaukee), Leo Singer (NASA/GSFC), and M. M. Kasliwal (Caltech) report on behalf of the GROWTH (Global Relay of Observatories Watching Transients Happen) collaboration We spatially cross-matched the LIGO/Virgo G298048 trigger with no assumption on orientation (90% containment volume using preliminary-LALInference.fits; LVC GCN 21527) with our Census of the Local Universe (CLU; Cook et al. in prep) galaxy catalog and found 60 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. The narrow-band survey is limited to a declination above -20 degrees, thus all galaxies within the 90% volume come from the compiled CLU catalog with no Halpha overlap. We list here all 60 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. In addition, we have compared these galaxies to those reported in our original crossmatch (GCN #21519) and have found that 20 of these are new galaxies. The new galaxies are marked by '*'. We note that the host galaxy of the reported optical transient (GCNs #21529, #21530, #21531) is NGC 4993. This galaxy was #3 on our original list ranked by stellar mass (GCN #21519) and is #4 on the list below. name_NED ra dec distmpc logsfr_fuv logmstar dm_kin P ----------------------------------------- -------- -------- ------- ---------- -------- ------ --------------- NGC 5078 199.9582 -27.4102 29.51 nan 10.57 32.35 0.887513795025* NGC 4970 196.8906 -24.0086 46.50 nan 10.42 33.34 0.518705272027 NGC 4830 194.3663 -19.6913 47.90 -1.419 10.41 33.40 0.858268936834 NGC 4993 197.4487 -23.3839 41.66 nan 10.26 33.10 0.64123728367 NGC 4968 196.7749 -23.6770 42.24 0.626 10.25 33.13 0.316464198585 IC 4197 197.0180 -23.7969 43.24 nan 10.24 33.18 0.445236314135 IC 4180 196.7354 -23.9171 42.46 -0.623 10.17 33.14 0.231620854391 MCG -04-31-042 198.5739 -26.5827 54.70 nan 9.98 33.69 0.895990447512* ESO 508- G 033 199.0969 -26.5614 45.59 0.199 9.95 33.29 0.615247563764 IC 4219 199.6239 -31.6309 52.19 -0.053 9.87 33.59 0.874563970341* IC 0874 199.7522 -27.6286 30.90 nan 9.85 32.45 0.789658618241* ESO 508- G 010 196.9080 -23.5790 43.04 nan 9.51 33.17 0.481194307217 2MASX J13161781-2926415 199.0742 -29.4450 52.93 -1.230 9.40 33.62 0.784286018046* ESO 575- G 053 196.2705 -22.3839 36.37 -0.856 9.33 32.80 0.36841088215 IC 0879 199.9190 -27.4290 34.11 -0.673 9.27 32.66 0.81030188127* UGCA 331 197.6914 -23.8657 40.82 nan 9.17 33.05 0.643613070644 ESO 575- G 044 NED01 195.0910 -22.6947 35.60 nan 9.14 32.76 0.815693971686* ESO 575- G 055 196.6663 -22.4561 44.49 -0.975 9.07 33.24 0.767149920359 ESO 508- G 003 196.6000 -24.1641 40.52 nan 9.06 33.04 0.0809646816159 ESO 508- G 019 197.4663 -24.2391 41.79 nan 8.98 33.11 0.390107508863 ESO 575- G 029 193.9986 -19.2691 45.21 nan 8.96 33.28 0.856267417303 2MASX J13073768-2356181 196.9071 -23.9384 49.73 nan 8.92 33.48 0.753012347515 2MFGC 10461 197.1774 -23.7756 41.39 nan 8.90 33.08 0.413936564291 2MASX J13061939-2258491 196.5805 -22.9804 41.51 -1.129 8.83 33.09 0.459238357582 UGCA 327 196.9370 -22.8579 37.29 nan 8.81 32.86 0.610525424738 ESO 508- G 004 196.7177 -22.8405 41.37 -1.063 8.61 33.08 0.621228481694 ESO 508- G 014 197.1342 -23.3469 46.61 -1.525 8.60 33.34 0.753661507789 GALEXASC J125811.97-210246.3 194.5501 -21.0461 43.89 -1.349 8.47 33.21 0.847953733375 ESO 444- G 033 201.5178 -32.1291 31.45 -1.169 8.46 32.49 0.873767002259* GALEXASC J130525.30-233008.8 196.3546 -23.5025 45.90 -1.011 8.43 33.31 0.440966168867 GALEXASC J131109.37-280035.5 197.7891 -28.0099 28.84 nan 8.36 32.30 0.670375919006* GALEXASC J130707.37-240634.4 196.7822 -24.1104 41.50 nan 8.30 33.09 0.143978844705 6dF J1305235-233121 196.3478 -23.5224 41.71 nan 8.28 33.10 0.18957340774 GALEXASC J130415.26-225251.3 196.0633 -22.8814 41.23 -1.577 8.20 33.08 0.246973097253 6dF J1309177-242256 197.3241 -24.3821 40.36 nan 8.12 33.03 0.267382395401 UGCA 328 197.3298 -24.3866 41.03 nan 8.11 33.07 0.292373909456 ESO 443- G 079 197.5947 -27.9770 31.71 nan 8.10 32.51 0.740389521428* ESO 508- G 035 199.4497 -26.9025 37.77 -1.526 8.02 32.89 0.600958568007 GALEXASC J130918.58-242304.8 197.3286 -24.3846 39.81 nan 7.98 33.00 0.250629160585 ABELL 1664_11:[PSE2006] 2506 196.8922 -23.8153 42.80 nan 7.93 33.16 0.37496420498 AM 1316-263 199.8900 -26.8027 32.03 -2.024 7.93 32.53 0.888395580501* GALEXASC J132218.16-300914.6 200.5747 -30.1544 34.12 -1.953 7.86 32.66 0.685502037779* GALEXASC J131426.62-271242.6 198.6106 -27.2120 29.32 -1.784 7.82 32.34 0.411085021807 ESO 508- G 039 199.6006 -27.4343 28.44 -1.682 7.72 32.27 0.841960065682 ABELL 1664_13:[PSE2006] 1313 195.7757 -23.8657 22.93 nan 7.72 31.80 0.79106477475* ESO 508- G 021 197.5043 -26.7119 29.71 -1.582 7.66 32.36 0.329579404218* ESO 444- G 002 199.1892 -27.8856 23.46 -1.205 7.59 31.85 0.866962651084* GALEXASC J132014.00-300208.9 200.0584 -30.0363 22.70 -1.668 7.53 31.78 0.869946416036* GALEXASC J130430.75-241313.3 196.1277 -24.2201 20.54 -2.616 7.19 31.56 0.822744075967* WINGS J125701.38-172325.2 194.2558 -17.3903 26.13 nan 7.10 32.09 0.8626975064 GALEXASC J131007.01-263546.5 197.5292 -26.5963 28.58 -1.915 nan 32.28 0.322783340928* USGC S204 196.9600 -23.5400 41.72 nan nan 33.10 0.471831679854 UGCA 325 196.7796 -24.1119 42.70 nan nan 33.15 0.198214466434 HDCE 0763 196.9733 -23.7569 43.09 nan nan 33.17 0.429404174971 ESO 508 197.1336 -23.6224 45.66 nan nan 33.30 0.664939464108 GALEXMSC J132152.52-312233.6 200.4688 -31.3781 30.87 nan nan 32.45 0.724356348566* [TSK2008] 0052 199.0736 -27.6878 29.69 nan nan 32.36 0.593309320022 2MFGC 10484 197.4617 -24.2419 42.31 nan nan 33.13 0.411745360516 ESO 444- G 004 199.2656 -31.5891 32.65 -1.507 nan 32.57 0.873219502269* [TSK2008] 0073 197.7951 -23.5882 40.44 nan nan 33.03 0.772082721414 * Galaxies not reported in the original CLU-LIGO crossmatch (GCN #21519) 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).