[IAUC] CBET 423: 20060308 : SUPERNOVAE 2006aq, 2006ar, AND 2006as

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                                                  Electronic Telegram No. 423
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
M.S. 18, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
IAUSUBS en CFA.HARVARD.EDU or FAX 617-495-7231 (subscriptions)
CBAT en CFA.HARVARD.EDU (science)
URL http://cfa-www.harvard.edu/iau/cbat.html


SUPERNOVAE 2006aq, 2006ar, AND 2006as
     The "Nearby Supernova Factory" collaboration (N. Blanc, Y. Copin,
E. Gangler, and G. Smadja, Institut de Physique Nucleaire de Lyon; P.
Antilogus, S. Gilles, R. Pain, and R. Pereira, Laboratoire de Physique
Nucleaire et de Haute Energies de Paris; G. Aldering, S. Bailey, S.
Bongard, D. Kocevski, B. C. Lee, S. Loken, P. Nugent, S. Perlmutter,
R. Scalzo, R. C. Thomas, L. Wang, and B. A. Weaver, Lawrence Berkeley
National Laboratory; E. Pecontal and G. Rigaudier, Centre de Recherche
Astronomique de Lyon; R. Kessler, Kavli Institute for Cosmological
Physics, Chicago; and C. Baltay, D. Rabinowitz, and A. Bauer, Yale
University) reports the discovery of a supernova (mag approximately
19.9, calibrated to R) on NEAT images (cf. CBET 263) taken on Feb.
24.5 UT.  SN 2006as is located at R.A. = 13h51m24s.88, Decl. =
-11o15'26".8 (equinox 2000.0).  A spectrogram (range 320-1000 nm),
taken with the Supernova Integral Field Spectrograph (SNIFS) on the
University of Hawaii 2.2-m telescope on Mar. 7.7 UT, reveals 2006as
to be a type-Ia supernova, similar to the spectrum of SN 1990N when
about three weeks past maximum light, at a redshift of z = 0.1.
     Also, SNIFS spectra (range 320-1000 nm) of supernovae 2006aq in
MCG +07-24-32 and 2006ar in MCG +11-13-36 (cf. IAUC 8684) were
obtained on Mar. 7.6 and 7.5 UT, respectively.  SN 2006aq is of type
II and SN 2006ar is of type Ia.  The spectrum of SN 2006aq is similar
to that of the type-IIb supernova 1993J at an approximate redshift of
z = 0.05; 2006aq appears to have faded rapidly relative to the
reported discovery magnitude.  SN 2006ar is before or near maximum,
with a continuum somewhat redder than normally observed in type-Ia
supernovae at this phase.


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                         (C) Copyright 2006 CBAT
2006 March 8                     (CBET 423)               Daniel W. E. Green