[IAUC] CBET 1047: 20070901 : SUPERNOVAE 2007hf, 2007hg, 2007hh, 2007hi

Sab Sep 1 01:00:51 ART 2007

                                                  Electronic Telegram No. 1047
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 2007hf, 2007hg, 2007hh, 2007hi
     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. Cough and J.
Holtzman, New Mexico State University, Las Cruces) reports the discovery of
four supernovae in images obtained using the QUEST-II camera on the Palomar
1.2-m Schmidt telescope, operated by the Palomar-QUEST Consortium.  Spectra
(range 320-1000 nm) were obtained on Aug. 31.3 and 31.5 UT with the SuperNova
Integral Field Spectrograph on the University of Hawaii 2.2-m telescope,
showing 2007hf and 2007hg to be two weeks past maximum, and 2007hh to be
around maximum.  R-band discovery magnitudes and astrometry were derived
from comparison with the USNO-B1.0 catalogue.

SN       2007 UT       R.A. (2000.0) Decl.      Mag.    z      Type
2007hf   Aug. 24.5    2 37 28.26  -23 32 04.7   18.6   0.05    Ia
2007hg   Aug. 24.5    4 08 32.65  + 2 22 43.7   18.0   0.03    Ia
2007hh   Aug. 26.2   16 46 59.10  +38 56 02.5   19.9   0.11    Ia
2007hi   Aug. 26.2   17 11 15.47  +21 15 38.0   19.8   0.07    II


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                         (C) Copyright 2007 CBAT
2007 September 1                 (CBET 1047)              Daniel W. E. Green