18 supernovae candidates detected by the OGLE-IV survey
ATel #4495; L. Wyrzykowski, A. Udalski, S. Kozlowski (Warsaw University Astronomical Observatory, Poland), on behalf of the OGLE team
on 17 Oct 2012; 21:18 UT
Distributed as an Instant Email Notice Supernovae
Credential Certification: Lukasz Wyrzykowski (wyrzykow@ast.cam.ac.uk)
Subjects: Optical, Supernovae, Transient
Referred to by ATel #: 4540, 4541, 4578, 4602, 4604, 4618, 4641, 4657, 4676, 4689, 4690, 4696, 4698, 4718, 4734, 4746, 4754, 4774, 4825, 4859, 4860, 4863, 4875, 4876, 4880, 4895, 4917, 5000, 5166, 5204, 5220, 5233, 5235, 5249, 5250, 5251, 5277, 5284, 5290, 5292, 5321, 5335, 5338, 5345, 5368, 5397, 5440, 5443, 5445, 5459, 5488, 5491, 5497, 5498, 5504, 5510, 5535, 5537, 5581, 5595, 5602, 5608, 5617, 5620, 5622, 5648, 5650, 5663, 5683, 5686, 5689, 5696, 5697, 5701, 5709, 5716, 5718, 5720, 5738, 5748, 5817, 5864, 5875, 5891, 5908, 5912, 5914, 5915, 5916, 5934, 5937, 5938, 5975, 6002, 6307, 6343, 6423, 6424, 6430, 6478, 6489, 6516, 10006, 11143, 11434, 11435
We are pleased to announce a regular search for transients by the
OGLE-IV wide field survey (http://ogle.astrouw.edu.pl). OGLE-IV has been conducted since March
2010 at the Las Campanas Observatory, Chile. The 1.3 m Warsaw Telescope
equipped with a 32 CCD mosaic camera covering 1.4 square degrees on the
sky with the resolution of 0.26 arcsec/pixel has been used. The limiting
magnitude of the search is I~21.5 mag. Currently the regular search for
transient phenomena covers about 400 square degrees towards the
Magellanic System (Clouds and Bridge) and the Galactic bulge. The
typical cadence of the survey is one observation per 2 or 3 nights. The
transients will be searched in the OGLE photometric databases with
variety techniques. Currently we provide results from the search of the
databases of new objects, i.e., objects not present on the OGLE standard
reference images. Difference image technique is applied for photometry
and transient detection and the reductions are performed almost in the
real time.
Here we report on the discovery of 18 on-going supernova candidates found in the
OGLE fields around the Magellanic Clouds and Magellanic Bridge. Most of
the candidates are located next or on apparent galaxies, indicating
they are very likely supernovae. Presented here objects include only the
SN candidates detected in the first weeks of the 2012/2013 season.
Hundreds SNe have been detected in the previous observing seasons data
(Kozlowski et al., in preparation).
The list of SN candidates is provided below with Ra,Dec (J2000.0) and maximum I-band magnitude:
OGLE-2012-SN-006 3:33:34.79 -74:23:40.1 17.62
OGLE-2012-SN-007 3:01:13.44 -75:01:16.1 18.42
OGLE-2012-SN-008 4:33:37.01 -71:32:20.4 18.55
OGLE-2012-SN-009 0:13:56.46 -70:01:41.3 14.89 also known as 2012dk
OGLE-2012-SN-010 2:58:26.16 -72:45:12.0 18.23
OGLE-2012-SN-011 2:08:45.14 -70:39:00.7 18.52
OGLE-2012-SN-012 4:36:17.61 -73:09:21.9 18.66
OGLE-2012-SN-013 5:42:48.70 -71:35:52.5 18.82
OGLE-2012-SN-014 4:37:19.18 -69:08:25.2 18.20
OGLE-2012-SN-015 4:33:19.02 -65:07:56.1 19.05
OGLE-2012-SN-016 5:58:56.36 -68:02:54.9 19.18
OGLE-2012-SN-017 3:09:20.61 -73:00:02.6 19.13
OGLE-2012-SN-018 0:53:37.61 -70:04:01.0 19.13
OGLE-2012-SN-019 3:09:51.27 -72:15:24.6 19.26
OGLE-2012-SN-020 0:27:08.75 -74:14:08.2 18.50
OGLE-2012-SN-021 3:21:03.26 -70:51:13.8 19.18
OGLE-2012-SN-022 3:22:32.00 -74:16:34.6 19.76
OGLE-2012-SN-023 5:40:58.11 -68:35:09.5 19.79
Photometric and spectroscopic follow-up is strongly encouraged.
Finding charts and light curves are available here.