GCN Circular 25350

C. D. Kilpatrick, D. A. Coulter, J. S. Brown, G. Dimitriadis, R. J. Foley, C. Rojas-Bravo, M. R. Siebert, K. Siellez (UCSC), A. L. Piro (Carnegie), A. Rest (STScI), Natalie Ulloa (Universidad de La Serena), M. Drout (University of Toronto)

report on behalf of the One-Meter Two Hemisphere (1M2H) collaboration:

in the process of following up the localization region of LIGO/Virgo collaboration (LVC) event S190814bv (GCN #25324), we observed the following fields with the 1.0-m Swope telescope at Las Campanas Observatory, Chile on UT 2019 August 15.  We covered approximately 42.1% of the probability region from the LALinference map provided by the LVC in GCN #25333.

The Swope Direct 4k x 4k imager covers 29.8 arcmin x 29.7 arcmin.  All images were 2 minute r-band exposures.  For each image, the approximate pointing center and 3-sigma limiting magnitude are indicated.  Using the photpipe image reduction and subtraction pipeline (Rest et al. 2005, ApJ, 634, 1103), we compared our images to publicly available DECam r-band images of the same fields.  We did not detect any new transients in these images.

Field    RA           Dec          MJD             Limiting Magnitude
s047243  00:49:28.13  -25:46:43.7  58710.22978     20.4
s047244  00:51:40.99  -25:47:16.8  58710.23631     21.0
s047897  00:47:02.64  -25:17:41.6  58710.24059     20.9
s038397  01:35:18.38  -32:43:43.7  58710.24462     21.0
s046590  00:49:38.62  -26:16:34.0  58710.24954     20.8
s038395  01:30:36.48  -32:43:46.9  58710.26314     19.9
s046591  00:51:50.90  -26:16:30.4  58710.26905     19.8
s037786  01:31:03.31  -33:13:26.4  58710.27448     19.7
s051884  00:43:53.16  -22:18:36.4  58710.28009     19.7
s039006  01:27:41.83  -32:14:13.6  58710.28429     20.1
s050547  00:50:37.25  -23:17:55.0  58710.28807     19.6
s047241  00:45:06.91  -25:47:25.4  58710.29461     20.6
s038396  01:32:58.15  -32:43:38.3  58710.29737     20.0
s038394  01:28:15.17  -32:43:40.1  58710.30383     19.8
s045940  00:49:53.81  -26:46:48.4  58710.31389     20.3
s039625  01:34:14.54  -31:44:16.4  58710.31954     20.3
s046592  00:54:03.50  -26:17:03.5  58710.32758     20.3
s049881  00:50:51.60  -23:48:09.0  58710.33806     17.6
s039007  01:30:01.97  -32:14:17.2  58710.34484     18.9
s039623  01:29:35.64  -31:44:06.7  58710.34875     19.5
s049883  00:55:09.22  -23:47:24.0  58710.35221     19.0
s047896  00:44:53.88  -25:17:20.0  58710.35535     18.9
s050543  00:41:59.93  -23:18:22.0  58710.36199     19.8
s051883  00:41:44.54  -22:18:59.0  58710.36544     20.6
s049880  00:48:39.94  -23:48:07.2  58710.37390     19.9
s047901  00:55:50.47  -25:17:21.8  58710.37663     19.0
s040862  01:23:59.14  -30:44:52.4  58710.38109     19.7
s037787  01:33:26.71  -33:13:12.7  58710.38419     20.5
s040240  01:24:31.44  -31:13:48.7  58710.38748     20.7
s051885  00:46:00.48  -22:18:24.1  58710.39168     19.8
s051217  00:52:36.22  -22:48:37.8  58710.39462     20.0
s048553  00:42:30.31  -24:46:55.2  58710.39748     19.6
s047242  00:47:17.16  -25:47:08.5  58710.40022     19.5
s050549  00:54:53.54  -23:18:23.8  58710.40316     20.6
s037788  01:35:45.82  -33:13:21.7  58710.40647     19.7
s052557  00:43:40.08  -21:49:19.6  58710.40962     19.6
s046589  00:47:25.87  -26:16:54.1  58710.41251     19.5
s045941  00:52:02.76  -26:47:29.0  58710.41605     21.5
s047895  00:42:41.18  -25:17:03.5  58710.41941     20.0
s038393  01:25:53.35  -32:43:38.3  58710.42301     21.1
s038392  01:23:31.13  -32:43:27.8  58710.42620     20.6
s050546  00:48:25.37  -23:18:02.9  58710.43197     20.3
s048552  00:40:17.18  -24:47:48.5  58710.43449     19.9
s049878  00:44:19.54  -23:47:55.0  58710.43701     19.8
s040243  01:31:26.30  -31:14:22.9  58710.43999     20.4
s046594  00:58:25.85  -26:16:35.0  58710.44370     20.1

Please direct all communication related to this circular to Charlie Kilpatrick (cdkilpat@ucsc.edu).