Supernova 2011ee in NGC 7674 = Psn J23275734+0846381
Abstract
M. Miluzio, Padua University; S. Benetti, M. T. Botticella, E. Cappellaro, P. Ochner, S. Valenti, Osservatorio Astronomico di Padova, Istituto Nazionale di Astrofisica (INAF); and F. Bufanom INAF, Osservatorio Astronomico di Catania, report their discovery of a supernova in the course of the European Southern Observatory's Infrared Supernova Search in Starburst Galaxies performed with the HAWK-I instrument at the Very Large Telescope. The new object was detected on a K-band image obtained on 2011 June 27.34 UT at magnitude K = 18.6 (limiting K mag 20) and is located at R.A. = 23h27m57s.341, Decl. = +08d46'38".10 (equinox 2000.0) which is 9".3 east and 6".3 south of the center of NGC 7674. Nothing is visible at this position on a K-band image taken on 2010 Sept. 7.14 (limiting K mag 21). The variables was designated PSN J23275734+0846381 when posted on the Central Bureau's TOCP webpage and is here designated SN 2011ee based on the spectroscopic report below. Additional magnitudes for 2011ee: July 10.07, 18.5 (Miluzio et al.; r-band magnitude; Liverpool telescope, location unspecified); 14.02, 19.0 (Miluzio et al.; r-band magnitude; Asiago 67/92 Schmidt telescope); 16.394, 17.7 (Joseph Brimacombe, Cairns, Australia; red magnitude; position end figures 57s.34, 37".5; image posted at http://www.flickr.com/photos/43846774@N02/5944827310/); 17.444, 17.5 (Brimacombe); 18.393, 17.8 (Brimacombe; image posted at website URL http://www.flickr.com/photos/43846774@N02/5952394911/); 21.461, 18.3 (Brimacombe; unfiltered CCD magnitude); 22.688, 18.3 (Brimacombe; red magnitude).
- Publication:
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Central Bureau Electronic Telegrams
- Pub Date:
- July 2011
- Bibcode:
- 2011CBET.2773....1M