Electronic Telegram No. 311 Central Bureau for Astronomical Telegrams INTERNATIONAL ASTRONOMICAL UNION M.S. 18, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A. IAUSUBS@CFA.HARVARD.EDU or FAX 617-495-7231 (subscriptions) CBAT@CFA.HARVARD.EDU (science) URL http://cfa-www.harvard.edu/iau/cbat.html SUPERNOVA 2005kx IN NGC 3197 The "Nearby Supernova Factory" collaboration (G. Aldering, S. Bailey, S. Bongard, D. Kocevski, B. C. Lee, S. Loken, P. Nugent, S. Perlmutter, R. Scalzo, R. C. Thomas, L. Wang, and B. A. Weaver, Lawrence Berkeley National Laboratory, Berkeley; N. Blanc, Y. Copin, E. Gangler, L. Sauge, and G. Smadja, Institut de Physique Nucleaire de Lyon; P. Antilogus, S. Gilles, R. Pain, and R. Pereira, Laboratoire de Physique Nucleaire et de Haute Energies de Paris; E. Pecontal and G. Rigaudier, Centre de Recherche Astronomique de Lyon; R. Kessler, Kavli Institute for Cosmological Physics, Chicago; and C. Baltay, D. Rabinowitz, and A. Bauer, Yale University) reports that a spectrogram (range 320-1000 nm) of SN 2005kx (IAUC 8635), obtained on Nov. 30.6 UT with the Supernova Integral Field Spectrograph on the University of Hawaii 2.2-m telescope, reveals that it is a young type-II supernova. The spectrum includes P-Cyg profiles from the hydrogen Balmer series and He I 587.6-nm on a blue continuum. Assuming a host redshift of z = 0.026975 (Falco et al. 1999, PASP 111, 438; via NED), the H-alpha emission peak is clearly blueshifted from its restframe wavelength by 3500 km/s -- an effect that has been observed in other young type-II supernovae (Dessart and Hillier 2005, A.Ap. 437, 667). NOTE: These 'Central Bureau Electronic Telegrams' are sometimes superseded by text appearing later in the printed IAU Circulars. (C) Copyright 2005 CBAT 2005 December 1 (CBET 311) Daniel W. E. Green