OGLE-IV Transient Search report 25 September 2017 part 1

ATel #10776; L. Wyrzykowski, M. Gromadzki, A. Hamanowicz, K. Rybicki, J. Klencki, S. Kozlowski, A. Udalski, R. Poleski, M. K. Szymanski, J. Skowron, K. Ulaczyk, M. Pawlak, P. Mroz, I. Soszynski, P. Pietrukowicz, M. Sitek (Warsaw University Astronomical Observatory, Poland), N. Ihanec (University of Nova Gorica)
on 25 Sep 2017; 06:15 UT
Credential Certification: Lukasz Wyrzykowski (wyrzykow@astrouw.edu.pl)

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The OGLE-IV Transient Detection System (Wyrzykowski et al. 2014, AcA,64,197; Kozlowski et al. 2013; Klencki et al. 2016, AcA, 66,15) announces discovery of 50 new on-going and recently finished transients discovered since Jan 2017.

They appeared near or on top of apparent galaxies and their light curves resemble those of supernovae near or after their peak brightness. Most of the candidates were detected with our Rapid Transient Detection System within less than 15 mins from observation and were made immediately available on the Rapid webpages: http://ogle.astrouw.edu.pl/ogle4/transients/rapid/rapid.html

Name RA(J2000.0) Dec(J2000.0) discovery_JD discovery_Imag Notes
OGLE17aaj 1:56:24.93 -71:04:15.7 2457754.57246 19.921 TDE candidate (ATEL #9977, #10006)
OGLE17aau 1:03:02.31 -65:31:30.6 2457754.61136 19.963
OGLE17abw 4:28:11.40 -61:18:09.1 2457754.74128 19.862
OGLE17abx 4:31:27.87 -60:45:25.1 2457754.74128 20.365
OGLE17adc 5:48:11.63 -61:42:19.3 2457755.67239 19.583
OGLE17aep 4:04:24.64 -63:33:52.2 2457757.62058 19.738
OGLE17aev 6:16:05.14 -70:39:09.4 2457757.78395 19.652
OGLE17agy 4:17:36.67 -63:46:57.4 2457763.69679 19.625
OGLE17aic 2:15:48.52 -67:52:42.5 2457760.57618 20.380
OGLE17ajd 1:28:02.70 -65:44:05.8 2457761.56532 18.975
OGLE17aki 1:47:39.27 -66:09:47.2 2457762.56880 18.272
OGLE17akq 5:44:16.22 -73:11:18.1 2457762.73067 19.873
OGLE17anu 2:43:10.97 -77:06:48.8 2457764.58534 19.573
OGLE17aob 7:36:25.98 -69:32:55.4 2457765.75719 18.284 found as Gaia16cfr
OGLE17aoc 3:02:38.62 -72:42:21.6 2457765.62523 18.227
OGLE17aod 5:43:53.26 -71:16:55.3 2457765.70478 19.624
OGLE17aoe 6:21:36.33 -68:05:42.7 2457765.74382 17.579
OGLE17aof 7:45:19.71 -71:24:17.9 2457765.76538 18.257
OGLE17axa 4:09:40.08 -74:42:28.4 2457769.62616 20.250
OGLE17bcd 0:39:04.34 -69:04:45.5 2457768.54157 19.864
OGLE17bev 1:55:38.36 -65:04:29.1 2457768.59088 19.672
OGLE17biq 3:15:46.80 -66:09:37.8 2457768.63497 20.432
OGLE17bir 3:14:47.92 -66:10:24.2 2457768.63497 19.914
OGLE17btn 6:24:34.17 -74:00:51.0 2457769.68560 20.276
OGLE17cgn 6:02:11.70 -72:26:42.7 2457771.75512 20.480
OGLE17cps 2:24:57.36 -64:46:11.7 2457773.56687 20.424
OGLE17cxz 2:17:28.28 -74:45:54.2 2457787.55747 19.769
OGLE17ddk 5:49:36.38 -61:54:59.3 2457785.66054 20.387
OGLE17dev 3:06:49.25 -80:16:23.6 2457786.51080 19.076
OGLE17dfh 3:14:28.77 -77:19:23.2 2457786.52141 19.122
OGLE17dfk 2:40:57.11 -73:58:17.1 2457786.52366 20.255
OGLE17djj 5:19:37.10 -75:23:24.3 2457786.62999 19.827
OGLE17dkj 4:30:55.48 -65:45:04.9 2457786.66523 18.767
OGLE17dsl 5:16:55.56 -67:36:23.9 2457787.67973 20.317
OGLE17duq 3:02:45.95 -66:06:53.1 2457789.60288 20.081
OGLE17eby 2:30:04.04 -64:41:17.6 2457790.55247 20.144
OGLE17ecg 2:48:03.74 -64:34:32.5 2457790.56520 20.574
OGLE17eez 6:09:25.86 -63:56:55.1 2457791.60339 20.118
OGLE17efp 6:25:55.16 -68:28:51.7 2457791.62001 20.354
OGLE17efy 4:46:59.47 -61:05:55.4 2457791.52731 20.261
OGLE17egb 4:54:33.55 -63:54:25.8 2457791.52936 20.422
OGLE17eho 6:23:08.04 -70:07:02.3 2457791.61353 20.329
OGLE17ehy 6:34:44.47 -69:43:13.1 2457791.62205 20.185
OGLE17ejc 6:07:20.72 -71:58:40.0 2457791.64770 20.216
OGLE17ejh 6:21:29.32 -72:24:30.8 2457791.64984 19.374
OGLE17enl 4:49:50.09 -64:45:32.1 2457793.56238 20.094
OGLE17epn 5:25:45.94 -58:55:10.5 2457795.51247 19.133
OGLE17esa 5:32:07.72 -69:19:34.8 2457796.59698 20.192
OGLE17eup 6:22:23.03 -68:21:30.4 2457797.57643 19.537
OGLE17eys 5:47:58.60 -63:54:01.7 2457798.58838 20.055

Photometric and spectroscopic follow-up is strongly encouraged.

Finding charts and light curves are available here