2007CBET.1139....1B

Further to CBETs 611 and 1135, 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 (DARK), 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 and 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; 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 twenty-two 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 confirming spectroscopy that was obtained at the European Southern Observatory's 3.6-m New Technology Telescope on Nov. 13 and 14 UT for 2007qf, 2007qg, 2007qh, 2007qi, 2007qj, 2007ql, 2007qo, 2007qp, 2007qs, 2007qx, and 2007qy by M. Smith and H. Lampeitl. J. Marriner, D. McGinnis (Fermilab), G. Miknaitis, A. Becker, J. Frieman, J. Holtzman, and A. Riess report confirming spectroscopy of 2007qm and 2007qw that was obtained at the ARC 3.5-m telescope on Nov. 12. 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 confirming spectroscopy that was obtained at the Hobby-Eberly Telescope on Nov. 12 and 13 for 2007qt, 2007qk, 2007qn, and 2007qq. L. Watson (OSU) and J. Prieto report confirming spectroscopy for 2007qr and 2007qv that was obtained at the Hiltner 2.4-m telescope at MDM Observatory on the night of Nov. 11. J. M. Silverman, A. V. Filippenko, and R. J. Foley (University of California, Berkeley) report confirming spectroscopy for 2007qu that was obtained at the Keck I telescope on Nov. 12. M. Stritzinger and J. Sollerman report confirming spectroscopy for 2007ra that was obtained by G. Leloudas and J. Sollerman at the Nordic Optical Telescope on Nov. 13; the host galaxy for this event contains an active galactic nucleus. 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 either from fits to the early light curves or from the spectra, with a typical uncertainty of plus-or-minus several days; in cases where such estimates are either uncertain or very discrepant, they are not reported. SN Discov. R.A. (2000.0) Decl. Mag. z Estimated Type Date UT Peak Date 2007qf Oct. 21 22 15 03.00 - 0 20 28.5 22.0 0.21 Oct. 23 Ia 2007qg Oct. 23 1 32 01.97 - 0 25 47.0 21.8 – Nov. 4 Ia 2007qh Oct. 29 0 39 30.86 + 1 01 27.6 21.2 0.25 Oct. 28 Ia 2007qi Oct. 30 23 16 28.80 - 0 05 54.6 21.4 0.30 Oct. 31 Ia 2007qj Oct. 31 20 49 40.04 + 0 28 07.1 21.7 0.17 Nov. 16 Ia 2007qk Oct. 31 21 03 14.12 + 0 27 26.4 22.2 0.30 Nov. 2 Ia 2007ql Oct. 31 21 29 43.66 + 0 26 40.6 21.6 0.23 Nov. 10 Ia 2007qm Oct. 31 22 30 48.73 + 0 00 38.7 21.8 0.21 Nov. 10 Ia 2007qn Oct. 31 23 59 09.24 + 1 09 30.0 22.2 0.32 Nov. 7 Ia 2007qo Nov. 1 1 43 01.60 - 0 56 43.7 22.5 0.23 Nov. 14 Ia 2007qp Nov. 2 0 42 48.43 + 0 22 47.1 22.2 0.27 Nov. 13 Ia 2007qq Nov. 2 2 42 30.21 - 0 58 16.1 23.0 0.24 Nov. 10 Ia 2007qr Nov. 4 2 52 29.23 - 1 08 22.3 20.5 0.14 Nov. 12 Ia 2007qs Nov. 4 3 11 46.03 + 0 05 30.9 21.5 0.29 Nov. 8 Ia 2007qt Nov. 4 3 29 25.41 - 0 38 46.7 22.7 0.31 Nov. 17 Ia 2007qu Nov. 4 22 32 32.82 + 0 51 32.7 22.3 0.31 Nov. 15 Ia 2007qv Nov. 4 22 35 07.91 - 1 06 37.5 21.9 0.10 Nov. 7 II 2007qw Nov. 4 22 35 29.01 + 0 28 56.2 21.2 0.15 Nov. 16 Ic 2007qx Nov. 5 0 27 41.78 + 1 13 59.7 22.4 0.06 Nov. 15 Ib 2007qy Nov. 5 1 55 15.28 + 0 38 35.2 22.1 0.24 Nov. 17 Ia 2007qz Nov. 5 21 00 02.77 + 0 49 39.3 22.4 0.32 Nov. 14 Ia 2007ra Nov. 12 23 34 23.95 - 0 53 25.2 19.9 0.09 Nov. 26 Ia