Electronic Telegram No. 306 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 SUPERNOVAE 2005km, 2005kv, 2005kw 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, 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 the discovery of two type-Ia supernovae in NEAT images (cf. CBET 263) obtained on Nov. 19.5 UT with the Palomar Oschin 1.2-m Schmidt telescope (+ QUEST II camera). SN 2005kv, which is located at R.A. = 8h34m11s.15, Decl. = +6d16'34".9 (equinox 2000.0), was discovered at magnitude approximately 19.2 (calibrated to R). A spectrogram (range 320-1000 nm), obtained on Nov. 25.5 with the Supernova Integral Field Spectrograph (SNIFS) on the University of Hawaii 2.2-m telescope, shows 2005kv to be a type-Ia supernova approximately one week past maximum at a redshift of z about 0.072. SN 2005kw, which was discovered at mag approximately 20.0, is located at R.A. = 9h36m06s.05, Decl. = +24d24'13".8. A SNIFS spectrogram of 2005kw, obtained on Nov. 25.6, reveals it to be a type-Ia supernova approximately one month past maximum at a redshift of z about 0.068. Preliminary analysis of a SNIFS spectrogram of SN 2005km in UGC 6356 (CBET 303), obtained Nov. 25.7, reveals that it is a type-Ia supernova around maximum light. Subtraction of the host-galaxy spectrum reveals the presence of Si II 635.5-nm and Ca II infrared triplet P-Cyg profiles. NOTE: These 'Central Bureau Electronic Telegrams' are sometimes superseded by text appearing later in the printed IAU Circulars. (C) Copyright 2005 CBAT 2005 November 26 (CBET 306) Daniel W. E. Green