[IAUC] CBET 740: 20061116 : SUPERNOVAE 2006nf-2006np

Vie Jun 22 17:03:25 ART 2007

                                                  Electronic Telegram No. 740
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 2006nf-2006np
     Further to CBETs 611 and 735, 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 eleven
new type-Ia 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 Nov. 11, 14, and 15 UT
indicate that they are all type-Ia events.  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
2006nf   Oct. 17     0 01 29.96  + 0 16 33.5   22.9   0.39   Oct. 23
2006ng   Oct. 21     0 22 07.27  - 0 05 44.3   22.4   0.40   Oct. 27
2006nh   Oct. 21     2 40 50.57  + 0 39 31.6   23.0   0.37   Nov.  2
2006ni   Oct. 21    20 54 52.41  - 0 11 41.4   22.9   0.18   Nov.  3
2006nj   Oct. 22     1 24 28.23  + 0 04 27.8   22.6   0.40   Oct. 29
2006nk   Oct. 27     2 56 16.61  - 0 24 38.8   21.7   0.20   Nov.  5
2006nl   Oct. 28     2 01 44.71  - 1 01 56.7   21.8   0.19   Nov.  6
2006nm   Oct. 28    23 12 39.38  + 0 16 01.0   22.5   0.31   Oct. 28
2006nn   Oct. 29     1 45 41.02  - 1 03 15.8   22.4   0.20   Nov. 12
2006no   Oct. 29    22 08 21.44  - 1 08 55.7   21.4   0.25   Nov.  5
2006np   Nov. 10     3 06 39.48  + 0 03 50.5   21.0   0.11   Nov. 25


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                         (C) Copyright 2006 CBAT
2006 November 16                 (CBET 740)               Daniel W. E. Green