[IAUC] CBET 1076: 20070919 : SUPERNOVAE 2007ix-2007jh

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                                                  Electronic Telegram No. 1076
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
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SUPERNOVAE 2007ix-2007jh
     Further to CBETs 611 and 1061, B. Bassett, South African Astronomical
Observatory (SAAO); 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; C. Gall,
University of Copenhagen (UK); 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; K. Konishi, UoT; 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; J. Sollerman and M.
Stritzinger, UK; N. Takanashi and K. Tokita, UoT; M. F. Taylor, WSU; K. van
der Heyden, University of Cape Town; 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 eleven 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
(University of Barcelona), A. K. Romer (University of Sussex), C. Collins
(Liverpool John Moores University), and J. Lucey and A. Edge (University of
Durham) report that confirming spectroscopy was obtained of 2007ix, 2007ja,
2007jb, 2007jc, and 2007je at the European Southern Observatory's New
Technology Telescope on the night of Sept. 17 by M. Smith and L. Ostman
(Stockholm University).  M. Stritzinger, C. Gall, and J. Sollerman report that
spectroscopy was obtained by Stritzinger and Gall on the Nordic Optical
Telescope on the night of Sept. 17 for 2007jd, 2007jf, 2007jg, and 2007jh.
R. Romani, C. Zheng, M. Sako, C. Wheeler, D. Schneider, R. Bender and U.
Hopp (University of Munich), and W. Kollatschny (University of Goettingen)
report that spectroscopy was obtained on the night of Sept. 14 with the
Hobby Eberly Telescope for 2007iy and 2007iz.  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 several days.

SN       Discov.       R.A. (2000.0) Decl.     Mag.    z    Estimated   Type
         Date UT                                            Peak Date
2007ix   Sept. 3     0 51 30.88  - 0 56 50.6   20.6   0.20   Sept. 9     Ia
2007iy   Sept. 3    20 41 05.96  - 0 25 19.6   22.9   0.37   Sept. 1     Ia
2007iz   Sept. 3    21 17 35.50  + 0 18 56.3   22.2   0.25   Sep. 13     II
2007ja   Sept. 3    23 30 05.49  + 0 43 32.3   21.7   0.09   Sept. 2     IIP
2007jb   Sept. 4     0 26 33.79  + 0 02 31.1   21.1   0.28   Sept. 9     Ia
2007jc   Sept. 4    23 23 48.62  - 1 08 10.1   20.2   0.13   Sept. 9     Ia/Ic
2007jd   Sept. 5     2 59 53.37  + 1 09 38.6   22.5   0.07   Sep. 25     Ia
2007je   Sep. 12     2 11 47.31  - 0 54 44.8   21.2   0.16   Sep. 23     Ia
2007jf   Sep. 14     0 12 22.32  - 1 06 19.6   21.0   0.07   Sep. 10     IIP
2007jg   Sep. 14     3 29 50.82  + 0 03 24.6   18.4   0.04   Sep. 27?    Ia
2007jh   Sep. 15     3 36 01.54  + 1 06 12.2   19.2   0.04   Sep. 15     Ia


NOTE: These 'Central Bureau Electronic Telegrams' are sometimes
      superseded by text appearing later in the printed IAU Circulars.

                         (C) Copyright 2007 CBAT
2007 September 19                (CBET 1076)              Daniel W. E. Green