Electronic Telegram No. 1031
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
M.S. 18, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
IAUSUBS@CFA.HARVARD.EDU or FAX 617-495-7231 (subscriptions)
CBAT@CFA.HARVARD.EDU (science)
URL http://www.cfa.harvard.edu/iau/cbat.html


SUPERNOVA 2007gp
     Further to CBET 1026, 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; 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, G.
Smadja, and C. Tao, 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 a supernova
(at R approximately 20.5) in images obtained on Aug. 7.2 UT using the QUEST-II
camera on the Palomar Oschin 1.2-m Schmidt telescope, operated by the
Palomar-QUEST consortium.  SN 2007gp is located at R.A. = 21h57m35s.59, Decl.
= +8o00'47".3 (equinox 2000.0).  A noisy spectrogram (range 320-1000 nm),
obtained on Aug. 8.5 with the SuperNova Integral Field Spectrograph on the
University of Hawaii 2.2-m telescope, suggests -- from a spectral fit using
a library of other supernova spectra -- that 2007gp is a type-Ia supernova
at a redshift of z approximately 0.24 and that the supernova may be
approaching or around maximum brightness.


NOTE: These 'Central Bureau Electronic Telegrams' are sometimes
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                         (C) Copyright 2007 CBAT
2007 August 10                   (CBET 1031)              Daniel W. E. Green