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Discovery of probable supernova in anonymous galaxy

ATEL # 1639; K. Hornoch (Astronomical Institute, Academy of Sciences, Ondrejov, Czech Republic)
on 31 Jul 2008; 9:41 UT
Distributed as an Instant Email Notice (Supernova)
Password Certification: Marek Wolf (wolf@cesnet.cz)

Subjects: Nova, Supernova, Transients

I report the discovery of probable supernova in anonymous galaxy. The new object was found on archival images taken with the 2.54-m INT at La Palma and obtained from the ING Archive. The host galaxy with V=20.8 and R=20.1 mag is located at R.A. = 9h54m02s.93, Decl. = +69d12'42".5 (equinox 2000.0). Probable supernova is located at R.A. = 9h54m02s.84, Decl. = +69d12'42".6 (equinox 2000.0), which is 0.5" west and 0.1" north of the center of the host galaxy. The new object is clearly visible on co-added images from four nights as well as on single images used for co-added images.

Available magnitudes (obtained with the 2.54-m INT, unless otherwise noted): Sloan r'-band: 2002 Dec. 24.184 UT, [22.7; 2003 May 9.883, [21.9; 23.960, [22.1; Jun. 3.897, 20.6; 5.900, 20.4. Narrow-band H_alpha: 2001 Jan. 3.126, [22.2; 2003 May 23.955, [21.8; 25.950, [21.3; Jun. 3.891, 20.9; 4.894, 20.7; 5.895, 20.7; 9.884, 20.5; 2004 Feb. 4.040, [21.6; 14.131, [21.8. V-band: 2004 Feb. 14.160, [21.9; 2005 Jan. 8.428, [24.0 (8.3-m Subaru).

Note that V-band images from the Subaru telescope were obtained from the SMOKA science archive.


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