Circular No. 8691

Central Bureau for Astronomical Telegrams INTERNATIONAL ASTRONOMICAL UNION Mailstop 18, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A. IAUSUBS@CFA.HARVARD.EDU or FAX 617-495-7231 (subscriptions) BMARSDEN@CFA.HARVARD.EDU or DGREEN@CFA.HARVARD.EDU (science) URL http://cfa-www.harvard.edu/iau/cbat.html Phone 617-495-7244/7440/7444 (for emergency use only)

SUPERNOVA 2006ax, 2006ay, 2006az

Three new apparent supernovae have been reported from
unfiltered CCD images:  2006ax and 2006ay by D. R. Madison, N. J.
Ponticello, and W. Li (LOSS/KAIT; cf. IAUC 8680), and 2006az by J.
Newton, L. Cox, and T. Puckett (0.35-m reflector at Portal, AZ; cf.
IAUC 8664).

SN      2006 UT      R.A.  (2000.0)  Decl.    Mag.     Offset
2006ax  Mar. 20.37  11 24 03.46  -12 17 29.2  17.1  51" E, 18" N
2006ay  Feb. 24.56  15 59 12.76  +20 44 27.9  19.0  12".2 E, 22".7 S
2006az  Mar. 23.39  12 12 14.68  +56 10 45.8  17.1  1".7 E, 5".8 N

Additional approximate magnitudes for 2006ax in NGC 3663:  Feb.
10.39 UT, [18.5 (KAIT); Mar. 21.15, 16.5 (S. Gonzalez, Las Campanas
Observatory, 1.0-m Swope telescope).  N. Tokimasa, H. Naito, and H.
Yamaoka report that low-resolution spectroscopy obtained on Mar.
21.7 shows 2006ax to be a type-Ia supernova a few days before
maximum light (additional details given on CBET 437).  The offset
for 2006ay above is with respect to the nucleus of the southeast
component of UGC 10116 (a group of six galaxies also known as
'Seyfert's Sextet').  Additional approximate magnitudes for 2006ay:
2002 July 7.30, [19.8; 2006 Feb. 10.56, [18.8; Mar. 21.26, 20 (V-
band image taken by Gonzalez).  Nothing is visible at the location
of 2006ay on the Digitized Sky Survey (limiting red mag about 21;
see also CBET 436).  Additional magnitudes for 2006az in NGC 4172
from Puckett:  Feb. 8, [19.0; Mar. 24.29, 16.3.

Host galaxy info: vel = 4347 km/s, Compact Group

SN type info: Ia

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