Electronic Telegram No. 167
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
M.S. 18, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
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CBAT@CFA.HARVARD.EDU (science)
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SUPERNOVA 2005ch
     M. Modjaz, R. Kirshner, and P. Challis, Harvard-Smithsonian Center
for Astrophysics; and T. Matheson, National Optical Astronomy Observatory,
report that a spectrum (range 340-730 nm) of SN 2005ch (cf. IAUC 8539,
8540), obtained on June 10.28 UT by M. Calkins with the F. L. Whipple
Observatory 1.5-m telescope (+ FAST), shows it to be a type-Ia supernova
well before maximum light.  The spectrum consists of a blue continuum and
the characteristic Si II feature (rest 635.5 nm), in addition to absorption
lines due to Ca II, Mg II, Fe II, Si II, and S II.


NOTE: These 'Central Bureau Electronic Telegrams' are sometimes
      superseded by text appearing later in the formal IAU Circulars.

                         (C) Copyright 2005 CBAT
2005 June 11                     (CBET 167)               Daniel W. E. Green