{
  "bibcode": "2019GCN.25376....1H",
  "body": "Kasper E. Heintz (Univ. Iceland), Daniele B. Malesani (DTU Space), \nGiorgos Leloudas (DTU Space), Darach J. Watson (DAWN/NBI), Jens Hjorth \n(DARK/NBI), Silvia Piranomonte (INAF/OAR), Nicholas E. Jannsen (NOT), \nreport on behalf of a larger collaboration:\n\nWe observed the position of the 10 galaxies listed below, using the \nNordic Optical Telescope equipped with the ALFOSC instrument. These \ntargets were selected from the list of most probable host galaxies \ngenerated by the HOGWARTS code (https://gwtool.watchertelescope.ie/), \nconsistent with the latest available 90% probability region of S190814bv \n(LIGO Scientific Collaboration and Virgo Collaboration, GCN 25333).\n\nEach galaxy was observed for 5 minutes using the SDSS i filter. \nObservations started around 2019 August 16.15 UT (1.27 days after the GW \nevent) and lasted about 1.5 hr. Conditions were unfortunately affected \nby the nearby bright Moon and the poor seeing (1.6-2.5\") leading to \nshallower than expected images.\n\nVisual inspection of the galaxies does not reveal any new candidate \ncompared to the deeper archival images from the Pan-STARRS survey. The \ntypical limiting magnitude is i ~ 19.5 AB (3 sigma), but we caution that \nthe actual limit is shallower at locations superimposed on the brightest \nparts of the targeted galaxies. This limit corresponds to an absolute \nmagnitude M_i > -17.5 at a distance of 276 Mpc, which would not have \nallowed us to detect an event as bright as AT 2017gfo.\n\nList of targeted fields (RA, Dec, name)\n00:47:07.527 -24:22:14.33 ESO474-026\n00:48:43.287 -23:33:42.07 IC1587\n00:48:21.859 -25:07:36.53\n00:49:01.481 -23:48:40.74\n00:52:41.582 -25:44:01.87 ESO474-035\n00:47:28.948 -25:26:26.36\n00:55:13.534 -26:19:16.51\n00:46:10.416 -24:39:00.69\n00:49:27.554 -26:32:17.88\n00:51:29.863 -24:38:32.98",
  "circularId": 25376,
  "createdOn": 1566001974000,
  "email": "malesani@space.dtu.dk",
  "subject": "LIGO/Virgo S190814bv: no candidates from optical imaging of selected galaxies at the NOT",
  "submitter": "Daniele B Malesani at DTU Space  <malesani@space.dtu.dk>",
  "eventId": "LIGO/Virgo S190814bv"
}