[IAUC] CBET 1079: 20070920 : SUPERNOVAE 2007ji-2007jx

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                                                  Electronic Telegram No. 1079
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
M.S. 18, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
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CBAT en CFA.HARVARD.EDU (science)
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SUPERNOVAE 2007ji-2007jx
     Further to CBETs 611 and 1076, 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, Dark
Cosmology Centre (DCC), University of Copenhagen; P. Garnavich, University
of Notre Dame (UND); 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; 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, DCC; 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 (SDSS) II collaboration, report the discovery of sixteen
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 (Institut de Ciencies de l'Espai, Centre d'Estudis Avancats
de Blanes, 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 with the European
Southern Observatory's New Technology Telescope on the night of Sept. 18 for
2007ji, 2007jj, 2007jl, 2007jo, 2007js, 2007jv, and 2007jw by M. Smith and L.
Ostman.  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. 18 for 2007jk, 2007jp, 2007jq, 2007jt, and 2007jx.  Garnavich
and M. Russell (UND) report that confirming spectroscopy was obtained by
them on the Kitt Peak National Observatory 4-m telescope on Sept. 18 for
2007jm, 2007jn, 2007jr, and 2007ju.  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.  Spectroscopic 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
2007ji   Sept. 3     0 38 48.36  - 0 10 45.5   21.1   0.18     --        Ia
2007jj   Sept. 3     1 45 26.73  - 0 01 09.9   20.7   0.24   Sept. 1     Ia
2007jk   Sept. 3     2 55 05.64  - 0 08 50.8   21.9   0.18   Sep. 13     Ia
2007jl   Sept. 3    21 29 16.94  - 1 00 11.5   21.7   0.26   Sep. 15     Ia
2007jm   Sept. 3    21 55 38.59  - 0 10 36.3   20.5   0.09   Aug.  9     IIn
2007jn   Sept. 3    22 47 31.99  + 0 24 52.5   20.6   0.06   Sept. 3     II
2007jo   Sept. 3    23 10 12.58  - 0 55 53.1   20.6   0.19   Aug. 30     Ia
2007jp   Sept. 3    23 44 41.24  - 0 01 48.3   20.4   0.18   Sept. 8     Ia
2007jq   Sept. 4     0 11 58.61  + 0 59 53.4   20.1   0.16   Aug. 30     Ia
2007jr   Sept. 4     2 22 57.28  + 1 01 32.7   18.8   0.09   Aug. 24     Ia
2007js   Sept. 5    20 36 48.67  + 0 05 54.4   20.2   0.17     --        Ia
2007jt   Sep. 12     2 28 32.78  - 1 02 31.6   20.4   0.14   Sep. 20     Ia
2007ju   Sep. 14     0 11 50.46  - 0 20 21.1   19.9   0.06   Sep. 18     Ic?
2007jv   Sep. 14     0 15 36.91  - 0 23 21.6   21.0   0.16   Sep. 20     Ia?
2007jw   Sep. 14     2 02 32.74  - 1 05 21.0   21.6   0.14   Sep. 23     Ia
2007jx   Sep. 15    20 02 32.82  + 0 22 18.1   21.0   0.18   Sep. 17     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 20                (CBET 1079)              Daniel W. E. Green