2006CBET..667....1B

Further to CBETs 611 and 657, 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 four new supernovae on multiple g, r, and i images taken with the SDSS 2.5-m telescope at APO by the SDSS observing team. J. Marriner, D. McGinnis, and J. Dembicky report that spectroscopic observations with the ARC 3.5-m telescope at APO on Oct. 2 UT indicate that 2006ix is a type-II supernova. 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 Oct. 9 indicate that 2006iy is a type-Ia supernova. Prieto and J. Eastman (OSU) report that spectroscopic observations, obtained with the Hiltner 2.4-m telescope at MDM Observatory on Kitt Peak on Oct. 10, indicate that 2006iz is a type-Ia supernova and 2006ja is a probable type-Ia supernova. 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. ----------------------------------------------------------------------------— SN Discov. R.A. (2000.0) Decl. Mag. z Estimated Peak Date ----------------------------------------------------------------------------— 2006ix Sept. 16 23 59 14.03 - 0 18 39.7 22.6 0.08 Oct. 1 2006iy Sept. 20 22 01 52.82 + 1 02 42.1 22.5 0.20 Oct. 5 2006iz Sept. 30 21 16 17.20 + 0 33 34.2 21.1 0.12 Oct. 14 2006ja Sept. 30 22 26 51.91 + 0 30 21.8 21.3 0.11 Oct. 14 ----------------------------------------------------------------------------— Also, further to CBET 663, Prieto and Eastman report that a spectrum of 2006iw, obtained with the Hiltner 2.4-m telescope on Oct. 10, shows it to be a type-II supernova.