[IAUC] CBET 713: 20061101 : SUPERNOVAE 2006lj-2006ls

Vie Jun 22 17:04:20 ART 2007

                                                  Electronic Telegram No. 713
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 2006lj-2006ls
     Further to CBETs 611 and 688, 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 ten 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 Oct. 24, 26, 27, and 28 UT
show that seven of the new objects (2006lj, 2006lk, 2006lq, 2006lp, 2006lm,
2006lr, 2006ll) are type-Ia supernovae.  B. Bassett, K. van der Heyden, and
P. Vaisanen, South African Astronomical Observatory, report that a spectrum
of 2006ln, taken with the South African Large Telescope on Oct. 23, shows it
to be a type-Ia supernova.  J. Eastman, J. L. Prieto, L. Watson, R. Assef,
K. Schlesinger, D. DePoy, OSU; and A. Crotts, Columbia University, report
that spectroscopic observations with the Hiltner 2.4-m at MDM Observatory
on Oct. 27 indicate that 2006lo is a type-Ia supernova.  J. Marriner, D.
McGinnis, and G. Miknaitis report that spectroscopic observations with the
ARC 3.5-m telescope at APO on Oct. 23 indicated that 2006ls was a probable
type-I supernova; a second spectroscopic exposure of this object, at MDM on
Oct. 29, indicates that it appears to be a peculiar type-I event.  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
2006lj   Sep. 27     0 10 43.62  + 0 12 04.7   23.5   0.24   Oct.  9
2006lk   Oct.  3     3 32 04.60  - 0 06 00.6   23.1   0.31   Oct. 16
2006ll   Oct. 11    22 07 28.14  - 0 54 12.3   22.5   0.38   Oct. 19
2006lm   Oct. 11    22 20 12.80  + 0 24 35.8   22.1   0.28   Oct. 20
2006ln   Oct. 11    23 15 19.91  - 0 33 45.3   21.3   0.24   Oct. 22
2006lo   Oct. 12    21 34 19.18  + 0 35 20.8   22.9   0.18   Oct. 27
2006lp   Oct. 13     0 27 05.68  - 0 07 33.5   21.8   0.22   Oct. 17
2006lq   Oct. 13     2 16 35.88  - 0 09 18.5   22.2   0.32   Oct. 17
2006lr   Oct. 16     2 38 52.96  + 0 05 24.3   21.9   0.26   Oct. 22
2006ls   Oct. 17     1 48 40.56  - 0 34 35.7   21.5   0.14   Nov.  1


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      superseded by text appearing later in the printed IAU Circulars.

                         (C) Copyright 2006 CBAT
2006 November 1                  (CBET 713)               Daniel W. E. Green