2007CBET.1061....1B -
Central Bureau Electronic Telegrams, 1061, 1 (2007/September-0)
Supernovae 2007ih-2007ik.
BASSETT B., BECKER A., BIZYAEV D., BREWINGTON H., CHOI C., CINABRO D., D'ANDREA C., DEMBICKY J., DEPOY D.L., DILDAY B., DOI M., EASTMAN J., FRIEMAN J., GARNAVICH P., HOGAN C., HOLTZMAN J., IM M., JHA S., KONISHI K., KRZESINSKI J., LAMPEITL H., KESSLER R., KETZEBACK B., LONG D., MALANUSHENKO O., MARRINER J., McMILLAN R., MIKNAITIS G., MOROKUMA T., MOSHER J., NICHOL R., ORAVETZ D., PAN K., PRIETO J.L., RICHMOND M., RIESS A., ROMANI R., SAKO M., SCHNEIDER D., SIMMONS A., SMITH M., SNEDDEN S., TAKANASHI N., TOKITA K., VAN DER HEYDEN K., WATTERS S., YASUDA N., WHEELER C., ZHENG C. and ATLEE D.
Abstract (from CDS):
Further to CBETs 611 and 1057, B. Bassett, South African Astronomical Observatory; 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; 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 (UT); J. Eastman, OSU; J. Frieman, Fermilab and UC; P. Garnavich, University of Notre Dame; C. Hogan, UW; J. Holtzman, New Mexico State University; M. Im, SNU; S. Jha, Rutgers University; K. Konishi, UT; J. Krzesinski, APO; H. Lampeitl, University of Portsmouth (UP); R. Kessler, UC; B. Ketzeback, 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; 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; N. Takanashi and K. Tokita, UT; K. van der Heyden, University of Cape Town; S. Watters, APO; N. Yasuda, UT; C. Wheeler, University of Texas; and C. Zheng, SU, on behalf of the Sloan Digital Sky Survey (SDSS) II collaboration, report the discovery of four type-Ia supernovae on g, r, and i images taken with the SDSS 2.5-m telescope at APO by the SDSS observing team. Spectroscopy was obtained by D. Atlee, J. Eastman, and J. Prieto (OSU) with the Hiltner 2.4-m telescope at MDM Observatory on the night of Sept. 10; 2007ii is a probable type-Ia supernova. The discovery magnitudes tabulated below are all g magnitudes; spectroscopic redshifts are given in the column labelled z. Peak dates in 2007 are approximate estimates from the spectra, with a typical uncertainty of ± 2 to 3 days. SN Discov. R.A. (2000.0) Decl. Mag. z Estimated Date UT Peak Date 2007ih Sept. 3 21 33 10.77 - 0 57 36.5 20.8 0.17 Sep. 10 2007ii Sept. 4 0 33 34.05 + 0 59 05.7 21.0 0.27 Sept. 3 2007ij Sept. 4 23 57 21.96 + 0 06 21.1 20.6 0.18 Sep. 11 2007ik Sept. 5 22 38 53.72 - 1 10 01.5 20.9 0.18 Sep. 12
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