2005CBET..304....1B

Further to CBET 254 and 281, J. Barentine, Apache Point Observatory (APO); B. Bassett, University of Portsmouth (UP); A. Becker, University of Washington; H. Brewington, APO; F. DeJongh, Fermilab; J. Dembicky, APO; D. L. DePoy, Ohio State University (OSU); B. Dilday, University of Chicago (UC); M. Doi, University of Tokyo; E. Elson, South African Astronomical Observatory (SAAO); J. Frieman, Fermilab and UC; P. Garnavich, University of Notre Dame; M. Harvanek, APO; T. Gueth and J. Holtzman, New Mexico State University; K. Konishi, University of Tokyo; J. Krzesinski, APO; H. Lampeitl, Fermilab; R. Kessler, UC; B. Ketzeback, D. Long, O. Malanushenko, and V. Malanushenko, APO; J. Marriner, Fermilab; J. L. Marshall, OSU; R. McMillan, APO; G. Miknaitis, Fermilab; T. Morokuma, University of Tokyo; R. Nichol, UP; K. Pan, APO; J. L. Prieto, OSU; M. Richmond, Rochester Institute of Technology; A. Riess, Space Telescope Science Institute; R. Romani and M. Sako, Stanford University; D. Schneider, Pennsylvania State University; M. Smith, UP; S. Snedden, APO; M. Subbarao, UC and Adler Planetarium; N. Takanashi and K. Tokita, University of Tokyo; K. van der Heyden, SAAO; and N. Yasuda, University of Tokyo, on behalf of the Sloan Digital Sky Survey II collaboration, report the discovery of eight supernovae on multiple g, r, and i images taken with the SDSS 2.5-m telescope at Apache Point Observatory by the SDSS observing team. Spectroscopy was obtained with the Hobby-Eberly Telescope, the William Herschel Telescope, the ARC 3.5-m telescope, and the MDM 2.4-m telescope, showing five of the new supernovae to be type-Ia events, two to be of type Ib/c (2005kr and 2005ks, showing broad lines similar to 1998bw), and one to be a probable type-Ia event (2005kn). The discovery magnitudes tabulated below are all g magnitudes. Spectroscopic redshifts are given in the column labelled z. Peak g magnitudes and dates (all 2005) are estimated from fits to the multi-band light curves. SN Discov. R.A. (2000.0) Decl. Mag. z Estimated Peak Date Date Mag. 2005kn Oct. 24 21 15 32.45 - 0 21 19.2 22.1 0.19 Oct. 30 21.4 2005ko Oct. 28 23 50 05.02 - 0 55 17.0 22.6 0.19 Nov. 8 21.1 2005kp Nov. 1 0 30 53.16 - 0 43 07.8 21.8 0.11 Nov. 16 19.3 2005kq Nov. 2 23 11 20.91 - 0 36 31.1 22.8 0.39 Nov. 9 21.9 2005kr Nov. 3 3 08 29.66 + 0 53 20.2 22.1 0.13 Nov. 13 20.5 2005ks Nov. 4 21 37 56.56 - 0 01 56.9 22.5 0.10 Nov. 13 21.1 2005kt Nov. 7 1 10 58.05 + 0 16 34.1 20.5 0.07 Nov. 20 18.2 2005ku Nov. 10 22 59 42.61 - 0 00 49.3 20.7 0.05 Nov. 26 17.5