Circular No. 8311
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)
CBAT@CFA.HARVARD.EDU (science)
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Phone 617-495-7440/7244/7444 (for emergency use only)


SUPERNOVAE 2004ax AND 2004ay
     Two apparent supernovae have been reported on unfiltered CCD
images, SN 2004ax by D. Singer and W. Li (LOSS/KAIT; cf. IAUC 8307)
and SN 2004ay by T. Boles (cf. IAUC 8290).

SN      2004 UT        R.A.  (2000.0)  Decl.   Mag.     Offset
2004ax   Mar. 21.48  15 24 46.76  +68 43 56.3  17.7   3".6 E, 5".9 N
2004ay   Mar. 23.14  18 28 57.57  +51 38 55.7  18.1   0".2 E, 8".5 S

Additional approximate KAIT magnitudes for SN 2004ax in NGC 5939:
Mar. 6.52 UT, [19.0; 23.53, 17.7.  Additional magnitudes by Boles
for SN 2004ay in UGC 11255:  2003 Sept. 25, [19.5; Oct. 24, [19.5;
2004 Mar. 24.098, 18.1.  SN 2004ay also is not present on Digitized
Sky Survey red (1991) and blue images (1990).


SUPERNOVAE 2002lu AND 2002lv
     T. Schrabback, Institut fuer Astrophysik und Extraterrestrische
Forschung, Universitaet Bonn, reports the discovery of two apparent
supernovae on archival Hubble Space Telescope ACS i-band images
(F775W filter):
SN       2002  UT       R.A. (2000.0) Decl.     i    Offset
2002lu   Sept. 23.7   3 33 31.44  - 9 16 52.3  24.0  0".4 E
2002lv   Sept. 23.7   3 33 33.75  - 9 18 53.0  25.2  0".3 E, 0".5 N

Additional i magnitudes:  2002lu, 2002 Aug. 11 UT, [26.7; Sept.
26.67, 24.2; 2003 Aug. 11, [26.9.  2002lv, 2002 Aug. 11, [26.2;
Sept. 26.67, 25.2; 2003 Aug. 11, [26.4.


SUPERNOVA 2004aw IN NGC 3997
     T. Matheson, P. Challis, and R. Kirshner, Harvard-Smithsonian
Center for Astrophysics, report that a spectrum (range 370-750 nm)
of SN 2004aw (cf. IAUC 8310), obtained by P. Berlind on Mar. 21.29
UT with the F. L. Whipple Observatory 1.5-m telescope (+ FAST
spectrograph), shows it to be a supernova of type I, but the exact
classification is uncertain.  The spectrum has peaks near 400, 450,
505, 570, and 710 nm; there is an absorption feature near 610 nm.
The spectrum shows a strong similarity with both the type-Ia
supernova 2001V at day -14 and the peculiar type-Ic supernova
2003jd at early times.

                      (C) Copyright 2004 CBAT
2004 March 23                  (8311)            Daniel W. E. Green