Electronic Telegram No. 1146 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://www.cfa.harvard.edu/iau/cbat.html SUPERNOVAE 2007qz AND 2007rc-2007rs Further to CBETs 611 and 1139, B. Bassett, South African Astronomical Observatory and University of Cape Town (UCT); A. Becker, University of Washington (UW); D. Bizyaev and H. Brewington, Apache Point Observatory (APO); C. Choi, Seoul National University (SNU); D. Cinabro, Wayne State University (WSU); C. D'Andrea, University of Pennsylvania (Penn); J. Dembicky, APO; D. L. DePoy, Ohio State University (OSU); B. Dilday, University of Chicago (UC); M. Doi, University of Tokyo (UoT); J. Eastman, OSU; J. Frieman, Fermilab and UC; P. Garnavich, University of Notre Dame; A. Goobar, Stockholm University; C. Hogan, UW; J. Holtzman, New Mexico State University; M. Im, SNU; S. Jha, Rutgers University; R. Kessler, UC; B. Ketzeback, APO; K. Konishi, UoT; J. Krzesinski, APO; H. Lampeitl, University of Portsmouth (UP); G. Leloudas, Dark Cosmology Centre, University of Copenhagen; D. Long, O. Malanushenko, and V. Malanushenko, APO; J. Marriner, Fermilab; R. McMillan, APO; G. Miknaitis, Fermilab; T. Morokuma, National Astronomical Observatory of Japan; J. Mosher, Penn; R. Nichol, UP; D. Oravetz, K. Pan, APO; L. Ostman, Stockholm University; J. L. Prieto, OSU; M. Richmond, Rochester Institute of Technology; A. Riess, Space Telescope Science Institute; R. Romani, Stanford University (SU); M. Sako, Penn; D. Schneider, Pennsylvania State University; A. Simmons, APO; M. Smith, UP; S. Snedden, APO; J. Sollerman and M. Stritzinger, Dark Cosmology Centre; N. Takanashi and K. Tokita, UoT; M. F. Taylor, WSU; K. van der Heyden, UCT; S. Watters, APO; N. Yasuda, UoT; C. Wheeler, University of Texas, and C. Zheng, SU, on behalf of the Sloan Digital Sky Survey II collaboration, report the discovery of seventeen supernovae on g, r, and i images taken with the SDSS 2.5-m telescope at APO by the SDSS observing team. A. Aragon- Salamanca (University of Nottingham), M. Bremer (University of Bristol), M. Turatto (University of Padova), A. Goobar, R. Nichol, J. Sollerman, P. Ruiz-Lapuente (University of Barcelona), F. Castander (ICE/CSIC, Barcelona), A. K. Romer (University of Sussex), C. Collins (Liverpool John Moores University), and J. Lucey and A. Edge (University of Durham) report their confirming spectroscopy that obtained at the European Southern Observatory's 3.6-m New Technology Telescope on Nov. 15 and 16 UT for 2007rd, 2007re, 2007rf, 2007rg, 2007ri, 2007rj, 2007rl, 2007rn, 2007rp, 2007rq, 2007rr, and 2007rs by M. Smith and H. Lampeitl. M. Stritzinger and J. Sollerman report their confirming spectroscopy for 2007rc, 2007rh, and 2007ro that was obtained by G. Leloudas and J. Sollerman at the Nordic Optical Telescope on Nov. 15. R. Romani, C. Zheng, M. Sako, C. Wheeler, D. Schneider, and R. Bender, together with U. Hopp (University of Munich) and W. Kollatschny (University of Goettingen) report their confirming spectroscopy that was obtained at the Hobby Eberly Telescope on Nov. 13 for 2007rk and 2007rm. The discovery magnitudes tabulated below are all g magnitudes; spectroscopic redshifts are given in the column labelled z. Peak dates (all 2007) are approximate estimates from fits to the early light curves, with a typical uncertainty of plus-or-minus two days. Types marked with a question mark (?) imply that the type identification based on the spectrum is uncertain. SN Discov. R.A. (2000.0) Decl. Mag. z Estimated Type Date UT Peak Date 2007rc Oct. 21 1 50 20.20 - 0 24 13.7 20.0 0.13 Oct. 27 Ia 2007rd Oct. 30 20 47 01.09 - 0 05 57.6 21.4 0.24 Nov. 1 Ia? 2007re Oct. 30 21 17 34.92 - 0 31 26.3 23.0 0.20 Nov. 11 Ia 2007rf Oct. 30 21 55 31.07 + 0 48 54.2 21.5 0.29 Nov. 4 Ia 2007rg Oct. 31 20 51 20.27 + 1 01 08.0 22.3 0.45 Nov. 7 Ia? 2007rh Oct. 31 21 41 03.77 + 0 08 33.2 21.5 0.22 Nov. 10 Ia? 2007ri Nov. 2 1 06 52.35 + 1 09 14.6 22.8 0.19 Nov. 16 Ia 2007rj Nov. 2 1 53 58.86 - 0 05 33.6 22.5 0.09 Nov. 10 Ia 2007rk Nov. 2 3 42 17.43 + 1 03 47.3 22.2 0.20 Nov. 4 Ia 2007rl Nov. 4 2 21 33.07 - 0 22 29.7 22.5 0.33 Nov. 17 Ia 2007rm Nov. 4 2 21 45.09 + 0 51 52.1 22.7 0.30 Nov. 18 Ia 2007rn Nov. 4 23 58 01.40 - 0 44 15.2 22.8 0.28 Nov. 18 Ia 2007ro Nov. 5 1 44 28.97 + 0 13 47.2 21.5 0.17 Nov. 19 Ia 2007rp Nov. 5 22 13 43.58 + 0 23 46.7 22.3 0.15 Nov. 17 Ia 2007rq Nov. 7 0 53 32.11 + 0 54 01.0 22.4 0.27 Nov. 17 Ia 2007rr Nov. 7 1 01 47.80 - 0 41 37.0 22.2 0.19 Nov. 19 Ia 2007rs Nov. 11 0 46 27.40 - 1 03 44.1 22.5 0.12 Nov. 19 Ia On CBET 1139, it should have been noted that the spectroscopic information for 2007qz was also contributed by Aragon-Salamanca et al. NOTE: These 'Central Bureau Electronic Telegrams' are sometimes superseded by text appearing later in the printed IAU Circulars. (C) Copyright 2007 CBAT 2007 November 23 (CBET 1146) Daniel W. E. Green