[IAUC] CBET 540: 20060606 : SUPERNOVAE 2006cv AND 2006cw

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                                                  Electronic Telegram No. 540
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
M.S. 18, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
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CBAT en CFA.HARVARD.EDU (science)
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SUPERNOVAE 2006cv AND 2006cw
     The "Nearby Supernova Factory" collaboration (P. Antilogus, S. Gilles,
R. Pain, and R. Pereira, Laboratoire de Physique Nucleaire et de Haute
Energies de Paris; N. Blanc, Y. Copin, E. Gangler, and G. Smadja, Institut de
Physique Nucleaire de Lyon; G. Aldering, C. Aragon, S. Bailey, S. Bongard,
M. J. Childress, D. Kocevski, S. Loken, P. Nugent, S. Perlmutter, K. Runge,
R. Scalzo, R. C. Thomas, L. Wang, and B. A. Weaver, Lawrence Berkeley
National Laboratory, Berkeley; E. Pecontal and G. Rigaudier, Centre de
Recherche Astronomique de Lyon; R. Kessler, Kavli Institute for
Cosmological Physics, Chicago; and C. Baltay, A. Bauer, D. Herrera, and D.
Rabinowitz, Yale University) reports the discovery of two supernovae in NEAT
images (cf. CBET 263) obtained on June 1.2 UT using the QUEST II camera in
drift-scan mode on the Palomar 1.2-m Schmidt telescope.  Spectra (range
320-1000 nm) obtained with the Supernova Integral Field Spectrograph
on the University of Hawaii 2.2-m telescope on June 5.4 were used for
classification.
     SN 2006cv (mag approximately 19.1, calibrated to R) is located at R.A.
= 14h47m47s.83, Decl. = +23o17'58".6 (equinox 2000.0).  A spectrum reveals
that 2006cv is a type-IIn supernova at a redshift of z = 0.10, as measured
from the peak of its narrow, prominent H-alpha emission.  Balmer emissions
H-beta through H-delta are also detected, as is He I 587.6-nm in weak
emission.
     SN 2006cw (mag approximately 19.4) is located at R.A. =
15h03m01s.01, Decl. = +21o41'40".6, and a spectrum reveals it to be a
type-II supernova at a redshift of z approximately 0.065, similar to the
spectrum of SN 1993J at two to three weeks after explosion.


NOTE: These 'Central Bureau Electronic Telegrams' are sometimes
      superseded by text appearing later in the printed IAU Circulars.

                         (C) Copyright 2006 CBAT
2006 June 6                      (CBET 540)               Daniel W. E. Green