[IAUC] CBET 1011: 20070724 : SUPERNOVAE 2007gc AND 2007gd

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                                                  Electronic Telegram No. 1011
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 2007gc AND 2007gd
     The "Nearby Supernova Factory" collaboration (P. Antilogus, R. Pain,
R. Pereira, and C. Wu, Laboratoire de Physique Nucleaire et de Haute
Energies de Paris; G. Aldering, C. Aragon, S. Bailey, S. Bongard, M.
Childress, S. Loken, P. Nugent, S. Perlmutter, K. Runge, R. C. Thomas, and
B. A. Weaver, Lawrence Berkeley National Laboratory, Berkeley; C. Baltay,
A. Bauer, D. Rabinowitz, and R. Scalzo, Yale University; G. Rigaudier and
E. Pecontal, Centre de Recherche Astronomique de Lyon; C. Buton, Y. Copin,
E. Gangler, and G. Smadja, Institut de Physique Nucleaire de Lyon; D.
Birchall, Institute for Astronomy, University of Hawaii, Hilo; and J.
Holtzman, New Mexico State University, Las Cruces) reports the discovery
of two supernovae in images obtained on July 18 UT using the QUEST-II
camera on the Palomar Oschin 1.2-m Schmidt telescope, operated by the
Palomar-QUEST Consortium.  Spectra (range 320-1000 nm) obtained on July
22.3 and 22.4 UT with the SuperNova Integral Field Spectrograph on the
University of Hawaii 2.2-m telescope show both objects to be type-Ia
supernovae near maximum.  The R-band discovery magnitudes and astrometry
were derived from comparison with the USNO-B1.0 catalogue.  The following
table summarizes the discovery information.

SN       2007 UT       R.A. (2000.0) Decl.      Mag.    z      Type
2007gc   July 18.2   14 47 47.32  +30 28 14.5   19.3   0.12    Ia
2007gd   July 18.2   15 29 31.48  + 7 59 51.1   19.9   0.13    Ia


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                         (C) Copyright 2007 CBAT
2007 July 24                     (CBET 1011)              Daniel W. E. Green