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IAUC 8187: 2003hn; 2003hg; 2003hh; 2003ho

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IAUC number 

                                                  Circular No. 8187
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)


SUPERNOVA 2003hn IN NGC 1448
     M. Salvo, M. Bessell, and B. Schmidt, Australian National
University (ANU), report that a spectrum of SN 2003hn (cf. IAUC
8186) was taken at the ANU 2.3-m telescope (+ Double Beam
Spectrograph) at Siding Spring Observatory on Aug. 26.7 UT.
Preliminary analysis shows very strong and broad H_alpha, a strong
continuum in the blue, and prominent P-Cyg H_beta and H_gamma
lines.  This is typical of a type-II supernova approximately 2
weeks after explosion.


SUPERNOVA 2003hg IN NGC 7771
     N. Elias-Rosa, S. Benetti, C. Marmo, A. Pastorello, G.
Altavilla, H. Navasardyan, M. Riello, M. Turatto and L. Zampieri,
Osservatorio Astronomico di Padova; and E. Cappellaro, Osservatorio
Astronomico di Capodimonte, report, from an inspection of a
spectrum (range 355-780 nm; resolution 2.4 nm) obtained on Aug.
22.48 UT with the Asiago 1.8-m telescope (+ AFOSC), that SN 2003hg
(IAUC 8184) is a type-II supernova caught shortly after explosion.
The spectrum is dominated by H_beta and H_gamma with P-Cyg profiles,
while H_alpha still has a pure emission profile.  The expansion
velocity deduced from the H_beta and H_gamma absorptions and from
the H_alpha FWHM is about 11300 km/s.  A broad He I 587.6-nm
emission is also present.  A detection of a deep (EW about 0.2 nm)
interstellar Na I D feature suggests high reddening for SN 2003hg.


SUPERNOVA 2003hh IN UGC 12890
     L. Wang, Lawrence Berkeley National Laboratory; D. Baade,
European Southern Observatory (ESO), report on an observation of SN
2003hh (cf. IAUC 8184) with the ESO Very Large Telescopes (+ FORS1)
in spectropolarimetry mode on Aug. 20.  The data show that SN
2003hh is a subluminous type-Ia supernova well before optical
maximum.  The Si II 595.7- and 413.0-nm lines are very strong.  In
addition, a strong, narrow Na I D line is observed, indicating that
the supernova suffers strong dust extinction from the host galaxy.
The wavelength of the peak of the polarization is at 550 nm,
suggesting that the dust in the host galaxy is very similar to that
of the Milky Way Galaxy.


SUPERNOVA 2003ho IN ESO 235-G58
     Corrigendum.  On IAUC 8186, line 5, FOR  33" east  READ  22" east

                      (C) Copyright 2003 CBAT
2003 August 27                 (8187)            Daniel W. E. Green

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