[IAUC] CBET 1040: 20070822 : SUPERNOVAE 2007gs-2007gv

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                                                  Electronic Telegram No. 1040
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 2007gs-2007gv
     The "Nearby Supernova Factory" collaboration (C. Buton, Y. Copin, E.
Gangler, G. Smadja, and C. Tao, Institut de Physique Nucleaire de Lyon; 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, R. Scalzo, Yale University; G. Rigaudier and E.
Pecontal, Centre de Recherche Astronomique 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 during Aug. 15-19 using the QUEST-II camera on the Palomar
Oschin 1.2-m Schmidt telescope, operated by the Palomar-QUEST Consortium (cf.
CBET 1031).  Spectra (range 320-1000 nm) were obtained on Aug. 21.4 and 21.5
UT with the SuperNova Integral Field Spectrograph on the University of Hawaii
2.2-m telescope; 2007gt was then ten days past maximum, 2007gu was a few days
past maximum, and 2007gv was near 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
2007gs   Aug. 15.3   22 12 00.43  + 7 31 49.3   18.5   0.04    II
2007gt   Aug. 16.3    0 16 26.16  - 0 21 09.2   18.5   0.06    Ia
2007gu   Aug. 16.3   22 53 42.55  +12 05 54.4   19.5   0.08    Ia
2007gv   Aug. 19.5    1 39 05.65  + 6 14 42.0   20.0   0.11    Ia


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                         (C) Copyright 2007 CBAT
2007 August 22                   (CBET 1040)              Daniel W. E. Green