[IAUC] CBET 786: 20061226 : SUPERNOVAE 2006sv-2006tc

Vie Jun 22 17:02:35 ART 2007

                                                  Electronic Telegram No. 786
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
M.S. 18, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
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SUPERNOVAE 2006sv-2006tc
     Further to CBETs 611 and 770, 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 and D. McGinnis,
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; G. Saurage, APO; 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 eight
new supernovae on multiple g, r, and i images taken with the SDSS 2.5-m
telescope at APO by the SDSS observing team.  Romani, Zheng, Sako, Wheeler,
and Schneider, together with U. Hopp (University of Munich) and W.
Kollatschny (University of Goettingen), report that spectroscopic
observations with the Hobby Eberly Telescope on Dec. 13, 15, and 18 UT
indicate that seven of the new objects are type-Ia supernovae and that
the eighth, 2006sz, is a probable type-Ia supernova.  The discovery
magnitudes tabulated below are all SDSS g magnitudes.  Spectroscopic
redshifts are given in the column labelled "z".  Peak dates (all 2006) are
approximate estimates from early fits to the multi-band light curves or
from the spectra.

SN       Discov.       R.A. (2000.0) Decl.     Mag.    z    Estimated
         Date UT                                            Peak Date
2006sv   Nov.  9    22 25 28.25  + 0 15 55.0   22.0   0.30   Nov. 19
2006sw   Nov. 14     1 05 00.20  - 0 22 28.7   22.7   0.33   Nov. 25
2006sx   Nov. 16     0 31 48.32  - 0 30 50.2   21.9   0.23   Nov. 24
2006sy   Nov. 16     2 21 05.20  + 0 49 42.2   22.6   0.21   Dec. 1
2006sz   Nov. 16    23 42 52.46  - 0 33 22.9   22.6   0.19   Nov. 21
2006ta   Nov. 19     3 29 50.42  + 0 17 42.3   22.0   0.29   Nov. 27
2006tb   Nov. 19     3 45 15.49  - 0 07 42.8   22.3   0.30   Nov. 18
2006tc   Nov. 23     3 08 01.96  + 0 56 36.4   22.3   0.21   Dec. 1


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                         (C) Copyright 2006 CBAT
2006 December 26                 (CBET 786)               Daniel W. E. Green