[IAUC] CBET 544: 20060611 : SUPERNOVA 2006cy

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                                                  Electronic Telegram No. 544
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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SUPERNOVA 2006cy
     Further to IAUC 8622, R. Quimby and P. Mondol report the discovery
of a supernova (mag about 17.2) in unfiltered CCD images taken on June
9.22 UT using the 0.45-m ROTSE-IIIb telescope at the McDonald Observatory.
SN 2006cy is located at R.A. = 13h08m01s.23, Decl. = +26o06'59".0 (equinox
2000.0), which is 2".3 east and 13".1 south of the center of the apparent
host galaxy (catalogued redshift of z = 0.036 from Rines et al. 2001,
Ap.J. 561, L41; via NED).  The supernova was found by subtracting a
co-addition of images taken between 2004 Dec. 15 and 2006 Jan. 10 (limiting
mag about 19.3) from the 2006 June images.
     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 that a spectrum (range 320-1000 nm)
of 2006cy, obtained on June 10.4 UT with the Supernova Integral Field
Spectrograph on the University of Hawaii 2.2-m telescope, reveals it to be
a type-IIn supernova, exhibiting narrow emission features from H-alpha
through H-delta, and also He I 587.6-, 667.8-, and 706.5-nm.


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                         (C) Copyright 2006 CBAT
2006 June 11                     (CBET 544)               Daniel W. E. Green