Electronic Telegram No. 629
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://cfa-www.harvard.edu/iau/cbat.html


SUPERNOVAE 2006gd, 2006ge, 2006gf, 2006gg, 2006gh
     Further to CBETs 611 and 627, B. Bassett, South African Astronomical
Observatory (SAAO); A. Becker, University of Washington (UW); H. Brewington,
Apache Point Observatory (APO); C. Choi, Seoul National University (SNU);
D. Cinabro, Wayne State University; F. DeJongh, Fermilab; J. Dembicky, APO;
D. L. DePoy, Ohio State University (OSU); B. Dilday, University of Chicago
(UC); M. Doi, University of Tokyo (UoT); J. Frieman, Fermilab and UC;
P. Garnavich, University of Notre Dame; M. Harvanek, APO; C. Hogan, UW;
J. Holtzman, New Mexico State University; M. Im, SNU; S. Jha, Stanford
University (SU); K. Konishi, UoT; J. Krzesinski, APO; H. Lampeitl, Space
Telescope Science Institute (STScI); R. Kessler, UC; B. Ketzeback, D. Long,
O. Malanushenko, and V. Malanushenko, APO; J. Marriner, Fermilab; R.
McMillan, APO; G. Miknaitis, Fermilab; T. Morokuma, UoT; R. Nichol,
University of Portsmouth (UP); K. Pan, APO; J. L. Prieto, OSU; M. Richmond,
Rochester Institute of Technology; A. Riess, STScI; R. Romani, SU; M. Sako,
University of Pennsylvania; D. Schneider, Pennsylvania State University; M.
Smith, UP; S. Snedden, APO; N. Takanashi and K. Tokita, UoT; K. van der
Heyden, SAAO; S. Watters, APO; C. Wheeler, University of Texas; N. Yasuda,
UoT; and C. Zheng, SU, on behalf of the Sloan Digital Sky Survey II
collaboration, report the discovery of five additional supernovae on
multiple g, r, and i images taken with the SDSS 2.5-m telescope at Apache
Point Observatory by the SDSS observing team.  Spectroscopic observations
with the Subaru 8-m telescope on Sept. 18 UT by N. Takanashi, Y. Ihara, T.
Morokuma, K. Tokita, K. Konishi, and N. Yasuda indicate that four of the
supernovae (2006ge, 2006gf, 2006gg, 2006gh) are type-Ia events, and one
(2006gd) is a type-IIP event.  The discovery and peak magnitudes tabulated
below are all SDSS g magnitudes, with the exception of 2006gf (r magnitude,
denoted by "r" in the table below).  Spectroscopic redshifts are given in
the column labelled "z".  Peak magnitudes and dates (all 2006) are estimates
from early fits to the multi-band light curves.

SN       Discov.      R.A. (2000.0) Decl.     Mag.    z    Estimated  Peak
         Date UT                                             Date     Mag.
2006gd   Aug. 28    1 10 26.39  - 1 04 04.8   22.8   0.15   Aug. 21   21.3
2006ge   Aug. 28   21 49 35.79  + 0 00 03.8   21.7   0.28   Aug. 20   21.6
2006gf   Sept.11    0 46 24.35  + 0 00 12.5   21.4r  0.12   Sept. 8   21.3r
2006gg   Sept.12    0 28 12.51  + 0 07 04.8   21.3   0.20   Sept.21   20.7
2006gh   Sept.12    0 54 46.94  - 0 15 03.1   21.2   0.25   Sept.16   21.1


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

                         (C) Copyright 2006 CBAT
2006 September 19                (CBET 629)               Daniel W. E. Green