Electronic Telegram No. 740 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 2006nf-2006np Further to CBETs 611 and 735, B. Bassett, South African Astronomical Observatory (SAAO); A. Becker, University of Washington (UW); H. Brewington, Apache Point Observatory (APO); C. Choi, Seoul National University (SNU); D. Cinabro, Wayne State University; F. DeJongh, Fermilab; J. Dembicky, APO; D. L. DePoy, Ohio State University (OSU); B. Dilday, University of Chicago (UC); M. Doi, University of Tokyo (UoT); J. Frieman, Fermilab and UC; P. Garnavich, University of Notre Dame; M. Harvanek, APO; C. Hogan, UW; J. Holtzman, New Mexico State University; M. Im, SNU; S. Jha, Stanford University (SU); K. Konishi, UoT; J. Krzesinski, APO; H. Lampeitl, Space Telescope Science Institute (STScI); R. Kessler, UC; B. Ketzeback, D. Long, O. Malanushenko, and V. Malanushenko, APO; J. Marriner and D. McGinnis, Fermilab; R. McMillan, APO; G. Miknaitis, Fermilab; T. Morokuma, UoT; R. Nichol, University of Portsmouth (UP); K. Pan, APO; J. L. Prieto, OSU; M. Richmond, Rochester Institute of Technology; A. Riess, STScI; R. Romani, SU; M. Sako, University of Pennsylvania; G. Saurage, APO; D. Schneider, Pennsylvania State University; M. Smith, UP; S. Snedden, APO; N. Takanashi and K. Tokita, UoT; K. van der Heyden, SAAO; S. Watters, APO; C. Wheeler, University of Texas; N. Yasuda, UoT; and C. Zheng, SU, on behalf of the Sloan Digital Sky Survey II collaboration, report the discovery of eleven new type-Ia supernovae on multiple g, r, and i images taken with the SDSS 2.5-m telescope at APO by the SDSS observing team. Romani, Zheng, Sako, Wheeler, and Schneider, together with U. Hopp (University of Munich) and W. Kollatschny (University of Goettingen), report that spectroscopic observations with the Hobby Eberly Telescope on Nov. 11, 14, and 15 UT indicate that they are all type-Ia events. The discovery magnitudes tabulated below are all SDSS g magnitudes. Spectroscopic redshifts are given in the column labelled "z". Peak dates (all 2006) are approximate estimates from early fits to the multi-band light curves or from the spectra. SN Discov. R.A. (2000.0) Decl. Mag. z Estimated Date UT Peak Date 2006nf Oct. 17 0 01 29.96 + 0 16 33.5 22.9 0.39 Oct. 23 2006ng Oct. 21 0 22 07.27 - 0 05 44.3 22.4 0.40 Oct. 27 2006nh Oct. 21 2 40 50.57 + 0 39 31.6 23.0 0.37 Nov. 2 2006ni Oct. 21 20 54 52.41 - 0 11 41.4 22.9 0.18 Nov. 3 2006nj Oct. 22 1 24 28.23 + 0 04 27.8 22.6 0.40 Oct. 29 2006nk Oct. 27 2 56 16.61 - 0 24 38.8 21.7 0.20 Nov. 5 2006nl Oct. 28 2 01 44.71 - 1 01 56.7 21.8 0.19 Nov. 6 2006nm Oct. 28 23 12 39.38 + 0 16 01.0 22.5 0.31 Oct. 28 2006nn Oct. 29 1 45 41.02 - 1 03 15.8 22.4 0.20 Nov. 12 2006no Oct. 29 22 08 21.44 - 1 08 55.7 21.4 0.25 Nov. 5 2006np Nov. 10 3 06 39.48 + 0 03 50.5 21.0 0.11 Nov. 25 NOTE: These 'Central Bureau Electronic Telegrams' are sometimes superseded by text appearing later in the printed IAU Circulars. (C) Copyright 2006 CBAT 2006 November 16 (CBET 740) Daniel W. E. Green