OGLE-IV Transient Search report 10 July 2015

ATel #7782; L. Wyrzykowski, Z. Kostrzewa-Rutkowska, A. Udalski, S. Kozlowski, M. Pawlak, M. Sitek (Warsaw University Astronomical Observatory, Poland), on behalf of the OGLE team
on 10 Jul 2015; 14:02 UT
Credential Certification: Lukasz Wyrzykowski (wyrzykow@ast.cam.ac.uk)

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The OGLE-IV Transient Detection System (Wyrzykowski et al. 2014, AcA,64,197; Kozlowski et al. 2013) reports the discovery of 12 new on-going transients. Most of them appeared near or on top of apparent galaxies and their light curves resemble those of supernovae near or after their peak brightness. We also report here, for completeness, the discovery of 9 transients, which were found near the end of previous observing season in April 2015.

We would also like to announce that the OGLE transients naming convention changes from now on and will follow a simpler format: OGLEYYxx, with YY being the year of detection and xx consequent letters.

Name RA(J2000.0) Dec(J2000.0) discovery_JD discovery_Imag Notes
OGLE-2015-SN-085 5:50:05.82 -66:50:28.4 2457124.54991 19.797
OGLE-2015-SN-086 5:50:05.81 -66:50:28.3 2457124.54583 19.147 duplicate detection of OGLE-2015-SN-085
OGLE-2015-SN-087 6:20:30.96 -72:42:49.4 2457120.58586 20.315
OGLE-2015-SN-088 6:04:16.98 -74:14:49.1 2457120.54516 20.053
OGLE-2015-SN-089 5:27:19.87 -61:52:36.2 2457124.55766 19.516
OGLE-2015-SN-090 5:15:42.73 -68:37:05.2 2457119.53890 18.195 classified as SN Ia z=0.047 (ATEL #7415)
OGLE-2015-SN-091 6:12:53.78 -64:10:26.0 2457133.53959 18.675
OGLE15do 5:55:53.10 -68:49:03.0 2457141.53703 19.216
OGLE15dp 4:32:32.04 -64:11:01.0 2457146.47902 19.058
OGLE15dq 5:47:12.98 -63:24:44.7 2457142.51095 20.295
OGLE15dr 0:24:40.90 -73:05:15.1 2457196.90300 18.753
OGLE15ds 0:42:14.96 -68:50:12.1 2457196.90909 18.421
OGLE15dt 1:17:48.95 -68:39:27.2 2457199.94044 19.599
OGLE15du 1:17:14.44 -76:04:25.4 2457200.92614 18.892
OGLE15dv 1:31:03.46 -72:08:10.2 2457202.89826 19.326
OGLE15dw 0:22:46.31 -69:41:52.8 2457210.86652 19.101
OGLE15dx 23:19:48.37 -74:08:23.1 2457212.87452 20.341
OGLE15dy 23:51:48.55 -69:14:40.9 2457206.90109 19.125
OGLE15dz 23:53:58.86 -79:46:10.5 2457207.90005 18.697
OGLE15ea 0:37:29.57 -63:25:35.7 2457212.90631 20.269
OGLE15eb 0:28:13.20 -76:59:26.5 2457206.92898 17.342 host with z=0.032839
OGLE15ec 0:33:40.28 -79:16:13.3 2457206.93101 19.467

Photometric and spectroscopic follow-up is strongly encouraged.

Finding charts and light curves are available here.