[IAUC] CBET 735: 20061111 : SUPERNOVAE 2006mz-2006ne

Vie Jun 22 17:03:30 ART 2007

                                                  Electronic Telegram No. 735
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 2006mz-2006ne
     Further to CBETs 611 and 726, 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 six new
supernovae on multiple g, r, and i images taken with the SDSS 2.5-m
telescope at APO by the SDSS observing team.  J. Eastman, J. L. Prieto, L.
Watson, R. Assef, K. Schlesinger, and D. DePoy, OSU; and A. Crotts, Columbia
University, report that spectroscopic observations with the Hiltner 2.4-m at
MDM Observatory on Nov. 8 and 10 UT indicate that 2006nb, 2006nc, and 2006nd
are type-Ia supernovae and that 2006ne appears to be a young, highly
reddened type-Ia event.  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 Oct. 30 and Nov. 10 indicate that 2006mz and 2006na are type-Ia
supernovae.  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
2006mz   Oct. 17    21 10 34.81  - 0 07 23.5   22.5   0.25   Oct. 28
2006na   Oct. 21     2 11 19.07  - 0 59 53.7   22.0   0.32   Oct. 21
2006nb   Oct. 22     2 26 53.40  - 0 19 40.1   22.8   0.21   Nov.  8
2006nc   Oct. 27     0 55 22.50  - 0 23 19.7   21.5   0.12   Nov. 11
2006nd   Oct. 28    22 44 59.06  - 1 00 23.8   22.1   0.13   Nov. 11
2006ne   Nov.  8     1 13 37.84  + 0 25 25.9   21.1   0.05   Nov. 18


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                         (C) Copyright 2006 CBAT
2006 November 11                 (CBET 735)               Daniel W. E. Green