Electronic Telegram No. 3588

Central Bureau for Astronomical Telegrams INTERNATIONAL ASTRONOMICAL UNION CBAT Director: Daniel W. E. Green; Hoffman Lab 209; Harvard University; 20 Oxford St.; Cambridge, MA 02138; U.S.A. e-mail: cbatiau@eps.harvard.edu (alternate cbat@iau.org) URL http://www.cbat.eps.harvard.edu/index.html Prepared using the Tamkin Foundation Computer Network

SUPERNOVAE 2013dy IN NGC 7250

t BET 3561, C. Casper, W. Zheng, W. Li, and A. V. Filippenko,
University of California at Berkeley; and S. B. Cenko, Goddard Space Flight
Center, report the LOSS discovery of an apparent supernova on unfiltered
KAIT images:

 SN       2013 UT        R.A. (2000.0) Decl.      Mag.      Offset
 2013dy   July 10.45   22 18 17.60  +40 34 09.6   17.0    2".1 W, 24".9 N

Note that the offset was incorrectly posted as 24".9 south on the TOCP.
The variable was designated PSN J22181760+4034096 when it was posted at the
Central Bureau's TOCP webpage and is here designated SN 2013dy based on the
spectroscopic confirmation reported below.  Additional CCD magnitudes for
2013dy:  July 8.45 UT, [18.5 (KAIT); 10.086, 19.1 (F. Ciabattari, Borgo a
Mozzano, Italy; 0.5-m Newtonian telescope + FLI Proline 4710 camera;
pre-discovery; limiting magnitude about 19.5; position end figures 17s.77,
10".5; UCAC-2 reference stars; image posted at the following website URL:
http://www.flickr.com/photos/snimages/9277396759/); 10.7, 16.6 (Andrea
Mantero, Bernezzo, Italy; 0.25-m f/4 reflector; position end figures 17s.58,
09".1; reference stars from UCAC-4 catalogue; image posted at website URL
http://www.flickr.com/photos/andreagalaxy/9261869119/); 11.735, about 16
(Kuniaki Goto, Miyoshi-shi, Hiroshima Prefecture, Japan; 35-cm Schmidt-
Cassegrain telescope; independent discovery; communicated by Shoichi Itoh,
National Astronomical Observatory of Japan); 11.909, 16.0 (Gianluca Masi and
Francesca Nocentini, remotely using the 43-cm robotic telescope of the
Virtual Telescope Project facility in Ceccano, Italy; position end figures
17s.61, 09".5); 11.994, V = 16.3 (Massimiliano Martignoni, Magnago, Italy;
0.25-m f/10 Schmidt-Cassegrain reflector; position end figures 17s.59, 09".5);
12.423, 15.7 (L. Elenin, Lyubertsy, Russia, and I. Molotov, Moscow, Russia;
remotely taken with a 0.45-m f/2.8 telescope at the ISON-NM Observatory near
Mayhill, NM, USA; position end figures 17s.60, 09".6; UCAC-4 reference stars;
limiting mag about 20.4; image posted at the following website URL:
http://spaceobs.org/images/TOCP/PSNJ22181760+4034096-20130712.png).
-----------------------------

Host galaxy info: vel= 1166 km/s ; 1.7" x 0.8"; 13.22; Sdm? Sburst          

SN type info: Ia

------------------------------


Return to  KAIT home page