[IAUC] CBET 627: 20060918 : SUPERNOVAE 2006fq-2006ga

Vie Jun 22 17:05:41 ART 2007

                                                  Electronic Telegram No. 627
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 2006fq-2006ga
     Further to CBETs 623 and 624, 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; N. Yasuda, UoT; and C. Zheng, SU, on behalf
of the Sloan Digital Sky Survey II collaboration, report the discovery of
twelve 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.
A. Aragon-Salamanca, University of Nottingham; M. Bremer, University of
Bristol; M. Turatto, University of Padova; A. Goobar, University of
Stockholm; J. Sollerman, University of Copenhagen; P. Ruiz-Lapuente and F.
Castander, University of Barcelona; A. Romer, University of Sussex; C.
Collins, Liverpool John Moores University; and J. Lucey and A. Edge,
University of Durham, report that spectroscopy obtained by R. Nichol and M.
Smith on Sept. 17 UT with the ESO 3.6-m New Technology Telescope (NTT) shows
five of the supernovae (2006fs, 2006fy, 2006fz, 2006fx, 2006fw) to be
type-Ia events, one (2006fq) to be a type-IIP event, and two (2006fu and
2006fv) to be possible type-Ia events.  Spectroscopic observations with the
Subaru 8-m telescope by N. Takanashi, Y. Ihara, T. Morokuma, K. Tokita, K.
Konishi, and N. Yasuda on the same night indicates that two of the other
supernovae (2006gb and 2006ft) are of type Ia, and a third (2006fr) is a
possible type-Ia event.  Subaru observations also confirm 2006fx as a
type-Ia supernova.  The twelfth object, 2006ga, was observed by both NTT and
Subaru and appears to be a possible type-I event.  The discovery magnitudes
tabulated below are all g magnitudes, and discovery dates are UT.
Spectroscopic redshifts are given in the column labelled "z".  Peak g
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                                                Date     Mag.
2006fq   Aug. 27    0 20 00.81  - 0 37 29.9   20.5   0.07   Aug. 10   19.6
2006fr   Aug. 27   20 50 30.21  + 0 23 55.3   21.9   0.31   Aug. 29   21.8
2006fs   Aug. 27   21 09 59.00  + 0 24 31.6   20.0   0.10   Aug. 15   19.7
2006ft   Aug. 28    0 31 50.06  - 0 22 58.7   21.3   0.26   Sept. 1   21.3
2006fu   Aug. 28   23 51 08.41  - 0 44 46.9   20.8   0.20   Sept. 6   20.4
2006fv   Sept.11    1 21 37.88  + 0 24 52.2   20.4   0.13   Sept.16   20.0
2006fw   Sept.11    1 47 10.34  - 0 08 49.2   20.4   0.08   Sept.28   19.1
2006fx   Sept.11   22 46 16.15  + 0 24 57.2   21.6   0.22   Sept.12   21.6
2006fy   Sept.11   23 26 40.19  - 0 50 24.9   19.8   0.08   Sept.15   19.5
2006fz   Sept.12    0 16 41.35  - 0 25 28.3   21.5   0.10   Sept.18?   --
2006ga   Sept.12    0 52 56.33  + 0 26 52.3   21.2   0.24      --      --
2006gb   Sept.15   23 59 16.50  - 1 15 01.3   21.5   0.27   Sept.21   21.5


NOTE: These 'Central Bureau Electronic Telegrams' are sometimes
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                         (C) Copyright 2006 CBAT
2006 September 18                (CBET 627)               Daniel W. E. Green