Supernova 2011ih in UGC 1774 = Psn J02182782+0533165
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Date
2011
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Abstract
Report the discovery of an apparent supernova in public images from the Mount Lemmon Survey (MLS). SN 2011 UT R.A. (2000.0) Decl. Mag. Offset 2011ih Nov. 19.12 2 18 27.82 + 5 33 16.5 19.5 7".1 E, 3".4 N The variable was designated PSN J02182782+0533165 when it was posted at the Central Bureau's TOCP webpage and is here designated SN 2011ih based on the spectroscopic confirmation reported below. Additional CCD magnitudes for 2011ih: Nov. 1.34 UT, 19.4 (MLS); 21.184, 18.4 (Joseph Brimacombe, Cairns, Australia; luminance filter presumed; position end figures 27s.64, 16".4; image posted at URL http://www.flickr.com/photos/43846774@N02/6376386519/). S. Valenti, A. Pastorello, S. Benetti, L. Tomasella, F. Bufano, and P. Ochner, Istituto Nazionale di Astrofisica, Osservatorio Astronomico di Padova, on behalf of a larger collaboration, report that a low-signal-to-noise spectrogram of PSN J02182782+0533165 = SN 2011ih, obtained on Nov. 20.93 UT with the 1.82-m Copernico Telescope (+ AFOSC; range 340-790 nm, resolution 2.2 nm), shows that 2011ih is a type-II supernova at a redshift z = 0.030. A narrow component of H_alpha is also visible, superimposed on the broad P-Cyg profile, which is probably due to the contamination of an H II region in the host galaxy....