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IAUC 8201: 2003hz, 2003ia, 2003ib, 2003ic, 2003id; 2003hx

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                                                  Circular No. 8201
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)
URL http://cfa-www.harvard.edu/iau/cbat.html  ISSN 0081-0304
Phone 617-495-7440/7244/7444 (for emergency use only)


SUPERNOVAE 2003hz, 2003ia, 2003ib, 2003ic, 2003id
     Further to IAUC 8199, D. Singer, B. Beutler, B. Swift, and W.
Li report the LOTOSS discovery of four apparent supernovae (2003hz,
2003ib, 2003ic, 2003id) on unfiltered KAIT images.  Also, H.
Yamaoka, Kyushu University, reports the discovery by K. Itagaki,
Yamagata, Japan, of an apparent supernova (SN 2003ia in NGC 6109)
on unfiltered CCD images taken on Sept. 15.422 UT with a 0.60-m
reflector.

SN      2003 UT        R.A.  (2000.0)  Decl.    Mag.     Offset
2003hz  Sept. 14.5     5 48 07.86  +46 15 22.8  16.7  2".6 W, 1".6 N
2003ia  Sept. 15.422  16 17 41.17  +35 00 07.2  17.2  7".5 E, 8".2 S
2003ib  Sept. 16.2    20 33 30.98  -24 37 15.0  17.6  1".0 E, 10".4 N
2003ic  Sept. 16.4     0 41 50.23  - 9 18 19.0  17.6  2".1 W, 7".6 S
2003id  Sept. 16.5     2 21 35.70  - 5 31 51.0  16.7  11".3 W, 34".6 S

Additional approximate KAIT magnitudes:  SN 2003hz in PGC 17866,
Mar. 11.2, [19.5; Sept. 15.5, 16.8.  SN 2003ib in MCG -04-48-15,
Aug. 15.3, [18.5; Sept. 1.2, 19.0; 11.2, 17.9; 17.2, 17.5.  SN
2003ic in MCG -02-2-86, Sept. 2.4, [19.0; 17.4, 17.6.  SN 2003id in
NGC 895, Sept. 7.5, [18.5; 17.5, 16.7.  Additional magnitudes by
Itagaki for SN 2003ia:  2002 June 2, [18.5; 5, [18.0; Sept. 16.411,
17.3.


SUPERNOVA 2003hx IN NGC 2076
     L. Wang, Lawrence Berkeley National Laboratory; and D. Baade,
European Southern Observatory (ESO), communicate:  "We observed SN
2003hx (cf. IAUC 8199, 8200) with the ESO Very Large Telescope (+
FORS1) in spectropolarimetry mode on Sept. 15.4 UT.  The
spectroscopy shows SN 2003hx to be a type-Ia supernova, about 10
days past maximum.  The interstellar Na I D line has an equivalent
width of 4.86, indicating significant dust extinction.  The
observed degree of polarization is about 2 percent and peaks
blueward of 400 nm with a postion angle of 3.4 deg.  If this
polarization is due to dust in the host galaxy, it implies that the
dust particles are significantly smaller in size than their
Galactic counterparts.  The ratio of total-to-selective extinction,
R_v = A_v/E(B-V), inferred from these observations is around 2.2."

                      (C) Copyright 2003 CBAT
2003 September 17              (8201)            Daniel W. E. Green

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